HomeMy WebLinkAboutA038 - Ames Municipal Energy CenterTo:Mayor & City Council
From:Donald Kom, Director of Electric Services
Date:July 28, 2026
Subject:Reciprocating Internal Combustion Engines and Transformer
Procurement for Ames Municipal Energy Center
Item No. 37
MEMO
Please see the attached Council Action Form regarding Reciprocating Internal
Combustion Engines and Transformer Procurement for Ames Municipal Energy
Center.
ATTACHMENT(S):
AMEC_Updated_Values.pdf
C-2520 - RICE LOR_0.pdf
Electric 515.239.5105 main
515.239.5142 fax
515 Clark Ave. P.O. Box 811
Ames, IA 50010
www.CityofAmes.org
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ITEM #: 28
DATE: 07-28-26
DEPT: ELEC
COUNCIL ACTION FORM
SUBJECT: RECIPROCATING INTERNAL COMBUSTION ENGINES AND
TRANSFORMER PROCUREMENT FOR AMES MUNICIPAL ENERGY
CENTER
BACKGROUND:
The Ames Municipal Energy Center (AMEC) project involves the design and construction of a
new facility at the former coal yard site south of the existing Power Plant, where the next
generation of electric generating assets will be installed and operated.
This project involves the purchase of three reciprocating internal combustion (RICE)
engines, their associated generators and accessories, and the generator step -up
transformer (GSU). This information was originally presented to the City Council at the
July 21 workshop. The City Council is now being asked to take action to approve the two
contracts.
The City has retained Sargent & Lundy, Chicago, IL, to assist with the design of the facility and
specifications for its major components. Over the past several months, Sargent & Lundy has
assisted City staff in preparing a bid document for the transformer and a Request for Proposal
(RFP) for the procurement of the reciprocating internal combustion engines (RICE), both which
will be installed at the new facility.
AMEC PROJECT BUDGET:
At the April 21, 2026 City Council workshop, staff presented the revised project budget estimate,
which was $190 million +/-5%. At that time, staff provided an overview of the financial impacts
based on an analysis from the City's financial consultant, PFM.
PFM conservatively projected that electric rates will need to increase by approximately
2.5% annually beginning in FY 2026/27 through FY 2043/44 (18 years), followed by 1.5%
annual increases through the life of the bonds (FY 2056/57). As the staff report explained
at that time, the Electric rate projections had previously included a 1.5% rate increase
over the next five years to cover the cost for ongoing operations and a $50 million
investment in additional generation. As a result of the PFM analysis and increased
project costs, the report recommended rate increases of 2.5% annually to cover debt
service and projected operating costs. These rate increases are also predicated on the
utility saving substantial operating costs from discontinuing the burning of refuse-
derived fuel.
The AMEC project budget contains several major project components, including the
transformer, the RICE engines, and the general work to construct the building and install much
of the equipment. The City Council is being requested to approve two of these it ems (the
transformer and RICE engines) at this meeting.
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The April project budget table contained 14 key items, plus three additional expense lines for
taxes ($5.3M), overall project escalation ( $14M) and contingency ($24M). The tax, escalation,
and contingency estimates are the sum of the taxes, escalation, an d contingency for each
individual budget line.
Staff has asked Sargent & Lundy to prepare a revised budget table that assigns the tax,
escalation, and contingency to each individual expense line. Incorporating the escalation
and contingency in particular is important because some items in the budget are more
susceptible to substantial cost increases and affected by timing. The result is the revised
table shown below:
TOTAL ESTIMATED
BUDGET -
EACH LINE
DESCRIPTION ADJUSTED TO
INCLUDE TAX,
CONTINGENCY,
ESCALATION
Reciprocating Internal Combustion Engines (RICE) and Auxiliary $ 73,315,096.14
Equipment
Generator Step-Up Transformer (GSU) 4,805,580.00
GSU Relay Protection Control Cabinet & Metering 393,900.00
MV Non-Segregated Bus Duct 196,950.00
Balance of Plant Station Batteries and Charging System & UPS 1,293,815.76
Geotechnical Investigation 182,287.06
Topographical Survey, Benchmarks, and Property Limits Survey 37,710.00
Acoustical Consultant 50,280.00
Independent Testing Service 62,850.00
General Work Contractor 97,366,422.65
Engineering Services 8,800,427.01
Construction Management At-Risk Support (Home office engineering 497,438.60
construction support and CM on site)
Builders Risk Insurance (for 3 years) 1,773,692.31
Building Furnishings 377,166.20
Land Acquisition 502,888.26
Transmission Connection (Including MISO Application) 3,017,329.57
TOTAL $ 192,673,833.56
By incorporating the taxes, escalation, and contingency into each of these line items, as contract
prices are considered for the GSU and RICE engines, it becomes clearer how close the major
contract items align with the overall budget and what the remaining outstanding cost risks are.
GENERATOR STEP-UP TRANSFORMER:
Each set of three RICE units will be connected to a single Generator Step -Up Transformer
(GSU) to transmit the electricity to the utility's electric system. The transformer has a long lead
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time to manufacture and deliver. On May 12, 2026, the City Council received the report of bids
for the generator step -up transformer for the AMEC project and approved the recommendation
to delay the award of bid. Staff is now prepared to request the City Council's approval of
the transformer contract at the July 28 meeting.
The Engineer's estimate for this equipment is $3,600,000, exclusive of tax. On February
20, 2026, an Invitation to Bid was posted to AmesBids by Purchasing, for the purchase of a
GSU. On April 24, 2026, 10 bids were received as shown in the table below:
BIDDER BID AMOUNT
Cavalry Energy LLC $1,641,075.00
Warrendale, PA
EL Power Tech Co., LTD. $1,940,000.00
Hwaseong-Si, Gyeonggi-Do, Korea
Meta Power Solutions $2,152,856.16
Lake Park, FL
Cahoon Sales, Inc. $2,248,100.00
Iowa City, IA
Cleaves-Bessmer-Marietti, Inc. $2,285,368.00
Lee's Summit, MO
RESCO (Rural Electric Supply Cooperative) $2,511,487.00
Ankeny, IA
WEG Transformers $2,532,176.00
Washington, MO
Hyundai Corporation USA $2,645,075.00
Torrance, CA
Energy Solutions Inc.
$3,564,998.00
Elkhorn, NE
Fletcher Reinhardt Co No Bid
Cedar Rapids, IA
Staff and Sargent & Lundy thoroughly evaluated the bids, considering criteria including the size
and performance capabilities of the equipment being bid, the efficiency of each unit, the place
of origin and delivery methods, delivery times, the offered payment schedule, etc. It is important
to note that for a bid of utility equipment such as this the City Council may make the award that
is in the best interests of the utility rather than awarding the contract only to the lowest
responsive, responsible bidder.
Upon first review of the bids, Calvary Energy, EL Power Tech, Meta Power Solutions and
Energy Solutions Inc. were unable to meet various specification requirements and were
eliminated from further evaluation.
Following this evaluation, staff and Sargent & Lundy are recommending that the contract
for the GSU be awarded to Cahoon Sales, Inc., Iowa City, Iowa for a General Electric
69/13.8kV generator step -up transformer. The City Council should note that, although
the initial bid price from this supplier was $2,248,100, the original bid validity date expired
in June. More time was necessary than anticipated to review and negotiate contract
terms, and therefore an extension to this date had to be negotiated.
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In order to proceed, the supplier requires a cost increase of $60,700, resulting in a revised
contract price of $2,308,800, plus applicable sales taxes. In addition, the delivery date
has been delayed by three months. The delivery is now anticipated in early 2029. This
delay is not anticipated to impact the overall AMEC project schedule, and will in fact
eliminate some challenges with storing the transformer until it is ready to be installed.
RICE ENGINES AND ASSOCIATED EQUIPMENT:
The RFP for the RICE engines was issued on March 13, 2026. The RFP called for a supplier to
design, engineer, procure, fabricate, assemble, and factory test the engines, then pack, ship,
assemble, and set them on prepared foundations. It was specified that each engine be capable
of operating both on natural gas and fuel oil, producing between 18 and 20 MW (54 -60 MW
total). The design life of the engines is 30 years.
A variety of optional components were also specified, including equipment and services such
as lubricating oil and reagent storage tanks, exhaust gas ducting, steel structures, distributed
control systems, switchgear, auxiliary ventilation units, five- and two-year service agreements,
spare parts, heat recovery systems, and lower noise exhaust systems. Each supplier was asked
to provide performance information for over 60 separate categories related to items such as fuel
consumption, operating temperatures, noise, and emissions.
The RFP specifies that proposals are to be evaluated on the basis of the following criteria:
1. Proposal Completeness and Compliance
2. Performance Characteristics
3. Emissions and Noise
4. Project Schedule
5. Included Scope
6. Testing & Commissioning
7. Maintenance Requirements and Training
8. Technical Field Assistance
9. Customer Base and Status of Technology Offered
10. Total Cost
PROPOSALS RECEIVED:
On May 29, 2026, proposals were received from:
Wärtsilä North America, Inc., for three Wärtsilä 18V50DF engines. These are 18-
cylinder dual-fuel (fuel oil and natural gas) engines, with each cylinder having a 50 cm
bore. Each engine has a nominal output of 18.540 MW. Wärtsilä recently installed engines
of this model for the Omaha Public Power District. The proposal expires July 31, 2026.
Everllence SE, for three Everllence 18V51/60DF engines. These are 18-cylinder dual-
fuel (fuel oil and natural gas) engines, with each cylinder having a 51 cm bore. Each engine
has a nominal output of 18.522 MW. Everllence is installing similar engines for Cedar Falls
Utilities The proposal expires July 31, 2026.
The proposals differ greatly in the components and options included, in addition to the
differences in the technical specifications between the two manufacturers. Staff and
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Sargent & Lundy conducted a thorough analysis of the desired options and the costs in
the context of the performance and other characteristics of each engine. In addition, both
companies reduced their pricing during the course of negotiations through the morning
of July 20. The bottom-line cost for each proposal is:
Firm Price
Wärtsilä North America, Inc. $ 69,230,520*
Everllence SE $ 75,283,223**
*Approximately 75% of this amount is calculated based on the conversion of Euros to USD on
July 15, 2026. This amount is subject to revision at the time the down payment is made. After
that date, Wärtsilä assumes any future exchange rate risk.
**All of Everllence's pricing is calculated in Euros and converted to USD to result in this
indicative price. This amount is subject to change based on conversion rates in effect shortly
before the agreement is signed. After that date, Everllence would hol d the exchange rate risk
for the first 36 months of the anticipated 5-year contract term.
Both proposals involve the production of the major components in Europe, then importing the
equipment to the U.S. Sales taxes and import duties are excluded from both proposals. These
costs would be pass-throughs to the City. Both firms offer performance guarantees for various
parameters of the engine's performance once installed. These guarantees provide for a
reduction in cost if the specified performance is not able to be met after installation, start -up,
and tuning.
Additionally, both proposals contained options for long -term service agreements. These service
agreements do not need to be included in the contract at this time, and will instead be agreed
to at a later date and incorporated into the Electric Services ope rating budget rather than the
AMEC capital project. For reference, the 5-year maintenance proposal from
Wärtsilä is priced at $5,513,000, while the Everllence 5-year maintenance proposal is
$13,231,980.
Wärtsilä has identified a production slot that was relinquished by another buyer, which
would allow the engines to be delivered to foundations in Ames in October 2029, with
assembly and installation to follow for an estimated Spring 2030 commissioning.
Everllence offers a delivery date to a European port of August 2029, followed by transport
to Ames with an estimated substantial completion by June 2030.
The Everllence units have approximately 8% better heat rate (the efficiency of fuel used per kW
produced) as compared to the Wärtsilä units. The Everllence units consume slightly more
lubricating oil and 50% more emissions reagent during operation.
Emissions overall are generally similar for both manufacturers, but the notable differences are
that Wärtsilä has a 40% lower NOx rate and a 50% higher CO rate than the Everllence unit. The
table below shows the emissions in pounds per kWh produced, based on the conversion of
three major emissions categories (Methane, Carbon Dioxide, and Nitric Oxide and Nitrogen
Dioxides) to CO2 equivalent (CO2(e)). The existing power boilers (Unit 7 and Unit 8) are
included for comparison:
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Carbon Dioxide Equivalent CO2(e)
Source lb/kWh
Unit 7 1.76
Unit 8 1.68
Wärtsilä 1.05
Everllence 1.04
Both firms were invited to make presentations to the City staff and Sargent & Lundy team.
Following the presentations, staff scored the proposals using the 10 different RFP
evaluation criteria as noted above. Below are the final scores:
Firm Total Points Rank
Wärtsilä 260.7 1
Everllence 203.3 2
Based on the final scores, staff is recommending that the City Council award a contract to
Wärtsilä North America, Inc. Sargent & Lundy has issued a letter of recommendation supporting
the award to Wärtsilä, which is attached.
Wärtsilä has installed its RICE units in a number of locations over the past 25 years.
Recent installations have included Central Iowa Power Cooperative (CIPCO), Alliant
Energy, Omaha Public Power District, Nebraska Public Power District, Rochester Public
Utilities (Minnesota), WEC Energy Group (Michigan and Wisconsin), Black Hills Energy
(South Dakota), Coffeyville Municipal Light & Power (Kansas), and Marquette Energy
Station (Michigan).
In addition to the overall capital cost for the Wärtsilä proposal being approximately $6M
less than Everllence, the Everllence long -term service agreement is approximately $1.5M
more costly on an annual basis. This cost would exceed any offset resulting f rom the
slightly more efficient fuel use offered by Everllence.
The Wärtsilä contract requires payments as follows:
Item No. Est. Months from % of Contract Milestone
Contract Signing Value
1 0 - Down Pmt. 25% Signed Contract and Notice to Proceed
2 4 10% 120-day document submittals complete
3 8 15% Purchase of major auxiliaries
4 32 25% First engine production conformity test
5 33 10% Engines ready to ship
6 34 5% Delivery of engines to U.S. port
7 40 5% Generator sets on foundations
8 43 2.5% Installation completion
9 51 2.5% Performance test completion
The City Council should note that the proposed milestone schedule outlined above
requires the City to make payments totaling 50% of the contract value within the first
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eight months of the four-year agreement. Staff is confident that, based on its long record
of producing and installing RICE engines worldwide and in the Midwest, Wärtsilä will be
able to meet its obligations under this agreement to deliver and install the engines for
the AMEC project.
Although no financial surety is required for this type of contract, staff has inquired with
Wärtsilä about the prospect of obtaining a surety bond to protect the City after payment
is made in the event Wärtsilä is unable to complete the delivery as promise d due to
bankruptcy. The cost for the premium payment of the bond is $1,560,923. A fter
consulting with an outside attorney who specializes in electric generation contracts, staff
believes that paying an additional $1,560,923 for a Surety Bond that covers performance
and supply from an American insurance provider is warranted to protect against
predominantly bankruptcy.
Sargent & Lundy is preparing a cash-flow plan for the overall AMEC project. This plan
can be considered alongside the Electric Capital Improvements Plan to ensure bond
proceeds and the Electric Utility Fund balance are sufficient to make the required
payments for this contract.
The overall contract being presented to the City Council for approval on tonight's agenda
does not include the cost of the $1,560,923 bond. If the City Council desires to include
the bond, specific instruction from City Council will be necessary at the Council meeting
to include the expense in the approval and to incorporate the bond into the final contract.
The City retained an outside attorney from Dorsey & Whitney to provide guidance
regarding the contract terms. Staff believes the contract that has been prepared with
Wärtsilä is acceptable.
Considering the base price and applicable taxes and tariffs, the current revised project budget,
including the purchase of the GSU and RICE engines as described in this report, is shown
below:
TOTAL ESTIMATED
BUDGET -
EACH LINE
CONTRACT (INCL.
DESCRIPTION ADJUSTED TO DIFFERENCE
INCLUDE TAX, TAX/TARIFFS)
CONTINGENCY,
ESCALATION
Reciprocating Internal
Combustion Engines (RICE) $ 73,315,096.14 $ 75,807,419.40 $ 2,492,323.26
and Auxiliary Equipment
GSU 4,805,580.00 2,470,416.00 (2,335,164.00)
GSU Relay Protection Control 393,900.00
Cabinet & Metering
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MV Non-Segregated Bus 196,950.00
Duct
BOP Station Batteries and 1,293,815.76
Charging System & UPS
Geotechnical Investigation 182,287.06 189,569.00 7,281.94
Topographical Survey,
Benchmarks, and Property 37,710.00 35,520.00 (2,190.00)
Limits Survey
Acoustical Consultant 50,280.00
Independent Testing Service 62,850.00
General Work Contractor 97,366,422.65
(CMaR)
Engineering Services 8,800,427.01
Construction Management
Support (Home office 497,438.60
engineering construction
support and CM on site)
Builders Risk Insurance (for 3 1,773,692.31
years)
Building Furnishings 377,166.20
Land Acquisition 502,888.26
Transmission Connection 3,017,329.57
(Including MISO Application)
TOTAL $ 192,673,833.56 $ 162,251.20
Surety Bond 0 $1,560,923 $1,560,923
TOTAL W/ SURETY BOND $194,234,756.56
$1,723,174.
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ALTERNATIVES:
1. Approve the following:
a) Award a contract to Cahoon Sales, Inc., Iowa City, Iowa, for the Generator Step -Up
(GSU) Transformer for the Ames Municipal Energy Center, in the amount of $2,308,800.
b) Award a contract to Wärtsilä North America, Inc., of Houston, TX, for three 18V50DF
engines and auxiliary equipment, in the amount of $69,230,520 (subject to currency
conversion rate).
2. Award contracts as described in Alternative #1, but authorize the payment of $70,791,443
which includes an additional $1,560,923 to include a surety bond in the contract with
Wärtsilä North America, Inc.
3. Award contracts to a different combination of firms.
4. Reject all bids and proposals and provide further direction to staff.
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CITY MANAGER'S RECOMMENDED ACTION:
The contracts for the Generator Step- Up Transformer and RICE engines for the Ames
Municipal Energy Center are the first major procurement steps in the project. These
critical components have long lead times to fabricate, deliver, and install. Additionally,
the RICE engine manufacturer must be selected in order to proceed with the engineering
of other components of the project that will integrate with the engines, including the
footings and building enclosure.
It is important to note that the pricing for both RICE engine vendors will not be held past
the end of July. Therefore, if the City Council is not prepared to approve a RICE contract
award on July 28, the proposed pricing, engine production slot, and deliv ery date will no
longer be available, subjecting the City to the risk of increased costs and substantial
delays in obtaining these critical generating units.
Staff has thoroughly evaluated the providers of both the GSU transformer and the RICE
engines, in collaboration with Sargent & Lundy. The proposed equipment is expected to
perform well for the project envisioned by Electric Services, and both firms are expected
to be capable of providing the equipment within the desired specifications and
timeframes.
After consulting with an outside attorney who specializes in electric generation
contracts, staff believes that paying an additional $1,560,923 for a Surety Bond that
covers performance and supply from an American insurance provider is warranted to
protect against predominantly bankruptcy.
Therefore, it is the recommendation of the City Manager that the City Council adopt Alternative
No. 2, as described above.
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Adam Redd
Project Director
Tel: (312) 269-2641
adam.j.redd@sargentlundy.com
July 24, 2026
SL Project No. 15790.002
AEC-SNL-COA-0031
City of Ames
Ames Municipal Energy Center Project
Letter of Recommendation
Reciprocating Internal Combustion Engines (RICE)
Curtis Spence
Assistant Director of Electric Services
City of Ames, Iowa
Tel: 515-239-5176
curtis.spence@cityofames.org
Dear Mr. Spence,
This letter summarizes the evaluation by Sargent & Lundy (S&L) for the Reciprocating Internal
Combustion Engine (RICE) proposals received from Wartsila and Everllence for specification C-2520.
The results of this evaluation are presented in this letter with attached supporting documents.
Pending final commercial review by COA, Wartsila is recommended to be the RICE equipment supplier.
This is due to Wartsila having a better technical offering as well as having the lowest evaluated cost, with
both being discussed in more detail within the body of this recommendation. The evaluated cost is
currently $69,287,767 (subject to Euro / USD exchange rate).
SUMMARY:
The request for proposal (RFP) was issued on March 13, 2026 to two proposers for the procurement of
three (3) 18-20 MWe RICE generating sets. Initial proposals were received on May 27th and 29th, 2026
from the companies listed below.
• Wartsila North America, Inc. (Wartsila)
• Everllence SE (EVR)
The proposals were generally complete and complied with the specification. Throughout the evaluation
process, conversations with both proposers led to adjustments to the original proposals. As a result, a final
proposal was submitted by Wartsila on July 17, 2026, and by EVR on July 20, 2026. The following exhibits
provide additional details to support the evaluation of the proposals:
• Exhibit 1 – Proposer Exceptions and Clarifications
• Exhibit 2 – Proposer RFC Logs
Further information regarding our technical and commercial evaluation is provided below.
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C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 2 of 9
DISCUSSION:
Scope of Supply:
Specification C-2520 includes engineering, design, supply, fabrication, inspection, shop testing, shipping,
packaging and delivery of the RICE Engines and engine auxiliaries.
As-Received Bid Price:
Exhibit 1 includes the Final Proposal Cover Letters submitted by EVR and Wartsila which include the as-
received proposal pricing. The as-received base proposal pricing is provided in the following table:
As-Received Proposal Price Summary
EVR Wartsila
(2)
1. The proposal prices are both originally in Euros and converted to USD based on the conversion rate
on the day the proposal was submitted.
2. The Wartsila base proposal includes engineering, scope of supply (excluding freight), technical field
assistance, and 2-year Warranty. All other items are considered optional adders.
Options and Adjusted Pricing:
In addition to the base scope, each proposer provided cost adders for optional scope to provide a more
complete package. Some options are recommended to be included in the awarded contract while some are
not. The table below shows the recommended award price for each proposer with their base scope plus
recommended options.
Recommended Award Price Summary
EVR Wartsila
Total Recommended Award Price $67,893,892 $69,287,767
EVR was not able to provide as complete of scope as Wartsila. In order to compare equivalent scopes, it
was necessary to adjust the EVR proposal based on the estimated cost to the project for others to fulfill the
scope items that were missing. The table below compares the adjusted prices that represent equivalent
scopes of supply.
Adjusted Price Summary
EVR Wartsila
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C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 3 of 9
Requests for Clarification (RFC):
Sargent & Lundy also evaluated the proposal documents received and prepared the following Requests for
Clarifications:
EVR Wartsila
Original proposal 29-May-26 27-May-26
RFC No. 1 12-Jun-26 12-Jun-26
RFC No. 2 16-Jun-26 16-Jun-26
RFC No. 3 19-Jun-26 19-Jun-26
The Request for Clarification (RFC) logs were issued to the two proposers to clarify scope questions,
technical exceptions, and pricing information. Additional clarifying questions were asked during the
interviews hosted with each proposer. Remaining questions were handled over email following the
interviews. At the time of issuing this recommendation, most, but not all, of the clarifications with the
proposers have been closed out. Any remaining open issues are addressed in the summary section.
Details regarding technical issues are described in the following sections.
Technical Evaluation:
Technical Compliance with Specification
The RFP requested Wartsila and EVR provide specific documentation to support their proposals. This
documentation included general proposal information for scope of supply, pricing, and exceptions and
clarifications (E&C) to the RFP. Also requested was input on the following: performance guarantees,
emissions, and proposal submittal documentation (project schedule, general arrangements and equipment
layouts, system technical data, preliminary one-line and controls architecture diagrams, test plans, manuals,
spare parts requirements, long-term service agreement (LTSA) details, and other documentation). A large
majority of these items were provided by both suppliers. Although some input was not provided, the
remaining documentation is expected to be provided post award.
Performance Characteristics
A summary of the guaranteed performance characteristics is included below.
Guaranteed Performance Characteristics Summary
EVR
(Gas/Oil)
Wartsila
(Gas/Oil)
18,522 18,132
1. EVR’s heat rate includes + 5 % tolerance
Both Wartsila and EVR meet the intent of the specification regarding the power production requested in
the RFP. EVR offers more favorable gross heat rates, and they offer an advantage in net power production
over Wartsila (+1,170 kW) operating 3 total engines on fuel gas or fuel oil.
Emissions
Both proposers provided emissions details and guarantees within their proposal. After evaluation, it was
determined that the emissions guarantees provided by both proposers were acceptable for the project and
future permitting efforts.
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C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 4 of 9
Scope of Supply
After reviewing the proposals, a number of scope of supply differences were noted. Exceptions and
Clarifications (E&C’s) to the RFP document are shown in Exhibit 1. Request for Clarifications (RFC) are
shown in Exhibit 2. These documents include items from both the initial and revised proposals and provide
clarity on the scope provided for each proposer.
EVR offered a more reduced scope of equipment supply than Wartsila. An assessment of these scope
variations as well as a discussion of additional technical items of note are described below:
Mechanical
Lube Oil and Reagent Tanks
EVR has taken exception to providing the three lube oil tanks (new, used and service tanks) in addition to
the Reagent storage tank. Although they’ve taken exception to providing the tanks, they’ve included the
rest of the required equipment for these systems in their scope of supply. These tanks would need to be
furnished by the Installation Contractor in order to complete the systems. A cost has been estimated for this
equipment to be furnished by the Installation Contractor.
Aux Side Ventilation Units
Wartsila provided an optional cost adder to include the Aux Side Ventilation Units in their scope, but EVR
did not. It is preferred for the RICE supplier to design and provide these units because there is significant
coordination required with the design of these units, the charge air intake units, and the platforms to access
them. A cost has been estimated for this equipment to be furnished by the Installation Contractor.
Compressed Air
Different compressed air system designs were proposed by each vendor, but both designs were deemed
acceptable. The EVR system utilizes a 2 x 100% compressor arrangement for their starting air along with
an air dryer and receiver tanks sized for a total of 6 engine starts without refilling. This size falls short of
the RFP requirement for the system to accommodate 3 starts per engine. EVR’s instrument / control air
system compressed air is provided by their SCR atomization air system which consists of three compressors
in a 3 x 50% arrangement.
The Wartsila proposed starting air system consists of a 3 x 50% compressor design with two air receivers
sized for a total of 9 engine starts. This meets the requirement of the RFP for the system to be sized for 3
starts per engine. The instrument / control air system is also a 3 x 50% compressor design with 3 x 50%
dryers, and 4 receiver tanks. The compressors quoted by Wartsila are provided in enclosures for additional
sound attenuation.
Both proposers indicated that their compressors had maximum temperature limitations and expressed
concern with installing this equipment in the engine hall, which was the design indicated in the RFP
package.
Electrical
Scope Options
Option F of the specification included the following Electrical Equipment and Services:
• MV Switchgear
• LV Switchgear or Panelboards
To support the OEM supplying the above equipment the following Services are included in Option F:
• Aux Power Load Flow Study including Power Flow, Short Circuit Analysis and Motor Starting
in ETAP
• Arc Flash Analysis
Wartsila and EVR included pricing for the items in Option F. During the proposal evaluation period, both
proposers were asked to provide pricing for additional LV Switchgear compartments in order to meet the
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C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 5 of 9
plant requirements for a future three engines as well as an incoming feed from a Reserve Auxiliary
Transformer (as shown on the plant Single Line Diagram). Both proposers were able to comply with the
requirements for the LV Switchgear. In addition to the items in Option F, Wartsila also included the
auxiliary dry type transformer feeding the LV Switchgear.
Both proposers initially took exception to providing the Black Start Diesel Generator required in the base
scope. During the proposal evaluation period, each vendor was asked to provide a cost adder for the diesel
generator to be sized for black start operation and 500kW minimum. Wartsila was able to provide a cost
adder for the black start diesel generator as specified.
EVR also included pricing for the items in Option F, but they were not able to provide pricing for the black
start diesel generator in time to support award. Integration of the black start diesel generator with the
electrical and controls systems requires significant coordination and therefore is recommended and
preferred to be in the scope of the RICE vendor. A cost has been estimated for this equipment to be furnished
by the Installation Contractor.
ETAP Aux Power Load Flow Study
Both EVR and Wartsila took exception to providing the Aux Power load flow study in native ETAP,
offering .pdf only. Recreation of the ETAP model to facilitate analysis of future units will need to occur
when COA starts looking into the addition of the future units. This will incur an additional cost to COA at
that time.
Control Design Impacts
EVR requires monitoring of each breaker (MV and LV) back at their PLCs. This results in more cables
required than the Wartsila design and therefore more conduit and tray needed for those cables. This also
results in EVR PLCs being larger than Wartsila’s resulting in a need for a larger electrical room to house
them. S&L requested top entry equipment in order to facilitate easier routing of cables, but EVR stated only
bottom entry is available. To accommodate EVR’s bottom entry design, this could result in needing either
a cable vault below the panels or a second story to the Main Electrical Room.
I&C
Both Wartsila and EVR presented viable control architectures and hardware offerings for the Ames
Municipal Energy Center, however, Wartsila’s offering is more completely defined and presents lower
overall integration risk for COA.
Wartsila more clearly identifies the furnished controls hardware, including operator workstations,
engineering workstations, common, engine, and auxiliary control panels, along with dedicated historian
and DMZ servers. By comparison, EVR generally defers key controls details to Annex 6 and Annex 7, does
not include separate DMZ or plant historian servers in its base offer, and instead indicates interface to the
Purchaser’s historian via OPC-UA. An additional cost for a plant historian based on S&L experience is
included in EVR’s adjusted proposal pricing.
EVR states that the BOP control system/HMI is included in their base scope, while Wartsila carries the
overall plant BOP DCS/PLC as an evaluated option; however, the latest evaluation still favors Wartsila on
included scope and overall evaluated cost.
Structural
Base Scope
The specification required the following structural scope of supply:
• Maintenance platforms for full and complete access to all engines.
• Primary access to all platforms shall be via stairs to the greatest extent possible.
15
C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 6 of 9
Scope Options
Options B, C, and G of the specification included the following additional structural scope of supply:
• Option B: Exhaust gas ducting, silencer, and stack support steel
• Option C: Steel structures, platforms, and stairs for SCR system
• Option G: Steel structures, platforms, and stairs for Radiator system
Proposed Scopes of Supply
Wartsila and EVR generally matched scope supply and exceptions regarding the structural supply. Both
suppliers included engine maintenance platforms and the support steel specified in Options B, C, and G.
Wartsila provided costs for each option, while EVR included the optional support steel in their base price.
The specification required stairs be provided as the primary access means to all platforms to the greatest
extent possible. Wartsila’s proposal specifies stair access for all platforms within their scope of supply.
Meanwhile, EVR noted that access to the Level 3 engine and auxiliary service platform could only be
reached by ladder, but that this platform would be rarely used. This was determined to be acceptable.
The specification required all exterior structural steel, platforms, stairs, ladders, and handrails to be
galvanized in lieu of paint. EVR confirmed all structural steel in their scope of supply will be hot-dip
galvanized, while Wartsila’s technical specifications call for a high-durability paint. Wartsila provided a
cost adjustment for hot dip galvanizing external support steel to meet this requirement.
Testing & Commissioning:
The main distinction between the testing plans of the two vendors is that the EVR proposal includes Factory
Acceptance Testing of only one genset, but the Wartsila proposal includes testing of all three. Although
both approaches are technically acceptable, Wartsila’s approach to testing each engine is much more
comprehensive and meets the requirements of the RFP.
Both vendors offered a significant amount of Technical Field Assistance (TFA) to help with commissioning
on site. TFA is discussed further in a later section.
Maintenance Requirements and Training:
Maintenance and Training
Wartsila offered a training program as part of their base proposal. The curriculum consists of two onsite
courses and two courses at the Wartsila facility in Ft. Lauderdale, FL. The on-site courses are 5 days and
10 days. The Wartsila facility courses are both 5 days.
EVR provided an optional adder to include training courses. The offering includes two 10-day courses
located at an EVR facility, and two 5-day on-site courses.
Both proposer’s offerings were deemed to be acceptable.
LTSA Overview
An additional item to consider is the capability of each supplier to continue to support maintenance and
monitoring of RICE plant operations through a Long-Term Service Agreement (LTSA). It was asked that
each vendor provide a proposal for a 5-year LTSA and a 2-year LTSA. The results for what was quoted are
in the table below.
LTSA and Spare Parts Summary
EVR Wartsila
Option I: Provide a Five-Year Long-Term Service
Agreement (LTSA) $15,912,779 $5,513,000
Option J: Provide a Two-Year Long-Term Service
Agreement (LTSA) $1,973,486 Not Quoted
16
C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 7 of 9
After reviewing the LTSA proposals and discussing them in interviews with each vendor, it seems that the
scope of parts and services offered under each program are comparable. All LTSA proposals from both
vendors were generated using the anticipated operating hours that were provided in the RFP package. The
programs mostly include service and spare parts for planned maintenance, and remote monitoring
functionalities. The programs would also include shipment of critical spares at commencement of the
contract for COA to have on site.
As seen in the table above, Wartsila did not provide a cost for a 2-year LTSA. They strongly recommended
the 5-year LTSA over the other options since the first major overhaul is expected to occur in the 3–5-year
period. This is also the reason why the EVR 5-year program was significantly more expensive than the 2-
year program.
In general, both LTSA programs were deemed acceptable. The Wartsila 5-year program is more favorable
due to its price, which corresponds to $1,102,600 / year for all planned maintenance. The cost of the EVR
5-year program corresponds to $3,182,556 / year.
Technical Field Assistance (TFA):
Wartsila and EVR both met the specification requirements for TFA and confirmed they will be providing
the following support as part of their project technical field assistance for their base offerings.
• Technical advisors: Civil, Electrical, Mechanical
• Commissioning manager
• PLC programmer
• NOx advisor
• Engine automation and instrumentation tuning
Additionally, EVR is offering to provide one (1) person on site for one (1) year to support TFA post
commercial operation date (COD). Wartsila did not offer this in their equipment supply contract, but it is
included as part of their 5-year LTSA program discussed above.
Equipment Delivery Date and Freight
EVR has offered a guaranteed FCA shipping date for major equipment (engines and generators) of
August 2029. It is assumed that the equipment will take 2-3 months to ship from the FCA port to site, so
the delivery to site would be expected to be October – November 2029.
Wartsila has offered a guaranteed major equipment DDP delivery date of October 30, 2029.
Although the anticipated delivery dates of the equipment are very similar, it is an advantage that Wartsila
offers a guaranteed delivery date for when the equipment will be on site, versus EVR’s offering that only
guarantees the date that the equipment is shipped from the port.
Wartsila included the cost of freight in their proposal while EVR supplied an estimated cost that would be
incurred at the times of shipment. Both vendors indicated that any tariffs or import taxes in place at the
time of shipment would be the responsibility of COA.
Engineering Document Submittal Schedule
EVR and Wartsila both took exception to the document submittal schedule provided in the RFP and
proposed their own schedules. Through negotiation, document submittal dates were agreed upon with
Wartsila. Input has not been provided on the EVR document submittal schedule at the time this letter was
17
C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 8 of 9
written. Further negotiation with EVR would be required for their document submittal schedule to reach an
acceptable point.
COMMERCIAL EVALUATION
The commercial evaluation is being performed by COA commercial and is not included as part of this
technical evaluation.
EVALUATION SUMMARY
S&L developed a scoring criterion to evaluate technical compliance. The table below summarizes this
evaluation which shows a total score in favor of Wartsila’s offering.
Category Score EVR EVR Comments Wartsila Wartsila Comments
Proposal Completeness and but slightly lacking in documentation requirements but slightly lacking in
constituents, but lacked in noise emission constituents, but provided
Guaranteed FCA date of August 2029
(anticipated delivery of October 2029)
Guaranteed DDP date of October
2029
Include core scope Included core scope plus other items
for optimized integration
Meets most requirements
Weaker market presence in US Strong market presence in US
representative of high demand from data Most cost-effective after
adjustments
Total
18
C-2520 Letter of Recommendation Date: July 24, 2026
City of Ames Page 9 of 9
RECOMMENDATION
Pending final commercial review by COA, Wartsila is recommended to be the reciprocating internal
combustion engines and accompanying equipment supplier. This is due to Wartsila having a stronger
technical offering as well as having the lowest evaluated cost. The evaluated cost is currently $69,230,520
(subject to Euro / USD exchange rate).
Please contact Ms. Marion Teslik at 312-269-7330 or me if you have any questions concerning this
recommendation.
Yours very truly,
Adam Redd
Project Director
Enclosure – All Recipients
Copies:
C. Spence
S. Feucht
K. Evans
D. Kom
J. Muschick
M. Teslik
H. Hudetz
C-2520_LOR.docx
19
C-2520 Letter of Recommendation Date: July 24, 2026
Exhibit 1 – Proposer Exception and Clarifications
20
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Wartsila
No. Department Spec. Section Comment
Requirement
Different than Seller's
Standard Offering
(Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date
Owner / Engineer
Responses Proposer Response
1 General 013216/ 101.2 b5 Only Project Specific documents will require review and resubmittal, Only 1 resubmittal
is considered for said documents
Y Acceptable 6/12/2026
2 General 013216/ 101.2 C This is not a feasable approach to most equipment and will only be applied after
discussion in EKO
Y Acceptable 6/12/2026
3 General 013216-2/ 101.3 Wärtsilä shall not be liable for schedule impacts arising from late reviews or delayed
approvals -when required- by the Owner or the Owner’s Engineer.
Y Acceptable 6/12/2026
4
General
13300/ 101.3
Section 013324 will be superceeded by Wartsila Appendix I - Document Submittal
Schedule that will be reviewed after EKO and updated throughtout the project
Y See item 30 in questions to bidder
tab
6/19/2026
Per Item 27 of the Questions to Propers
(Row 30 of the Excel file)
The Monthly progress reports will include
the Master Document List and Project
Schedule will be submitted 30 days after
EKO.
Preliminary Training Program will be
provided 90 days after EKO
Wartsilä provides ITP, Engine PCT
protocol 30 days before engine PCT, FAT
protocols for the control system 30 days
before testing and Generator FAT
Protocols ahead of the Generator FAT.
Site Quality Assurance Documentation
(SQAD) will be available after the
equipment is delivered to site.
3D model models for Wärtsilä’s scope of
supply will be provided
6/25/2026
Document submittal list
updated per S&L comments.
5
General
013300/ 102.1-102.3
Wärtsilä uses DCM for document control and document submittals in delivery projects.
DCM365 introduction for customer training can be provided to the customer after EKO.
DCM has commenting function. By using the commenting function in DCM all
stakeholders have at any time access to newest information and there is no need of
exchange and manual tracking excel files. Customer and Customers engineer can get
access to the comment section. The system allows to add written comments as well as
attachments (e.g. commented drawings). Comments can be exported into an excel at any
stage for own archiving purposes.
Wärtsilä will use own document numbering and revision system.
Customer document identification can be available as metadata in DCM, and on a
project front page for each document, but it will not be added to the document header or
title block. Using customer document identification in addition to Wärtsilä's own
identification will increase cost.
Y In Review
To be discussed in 7/7 meeting
6/12/2026 Discussed in 7/7 meeting and
deemed acceptable.
6
General
013300/ 102.4 - 102.6
Transmittals are prepared per project phase and discipline. The transmittal sheet
displays the project name, transmittal number, and date. All documents included in the
transmittal are listed with title, document number, revision, and issue purpose.
Transmittals are numbered using a single running sequence, with no separation based
on phase, discipline, or issue purpose (WAR-CUS-nnnn).
All commenting is done by document and not per transmittal.
Y Acceptable 6/12/2026
7
General
013300/ 102.7
Preliminary, For Construction and As-Built can be added as stamp on the documents.
Issue purposes are mentioned in the transmittal sheet and as metadata in DCM.
Wärtsilä's internal document will include Wärtsilä's doc number, other supplier's
documents won't be altered to add Wärtsilä reference.
Some Certificates will be in the Vendor's local language
Y Acceptable 6/12/2026
8 General 013300/ 102.10 References in drawings are done by document ID. Referenced drawings are not added to
a drawing.
Y Acceptable 6/12/2026
9 General 013300/ 102.12 Comments will be resolved in the next revision of the document and after complete
review of the document
Y Acceptable 6/12/2026
10 General 013300/ 102.15 Not applicable for all equipment
Y Acceptable 6/12/2026
Page 1 of 5
21
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Wartsila
11
General
013300/ 102.16
Some of the submittals will have a history of changes
Y All documents should have a
history of changes. Please confirm
why only "some" is included here. If
a document is superseded, it
should be identified as superseded
by the document number that it has
been superseded by.
6/12/2026
Per Item 27 of the Questions to Propers
(Row 30 of the Excel file)
The Monthly progress reports will include
the Master Document List and Project
Schedule will be submitted 30 days after
EKO.
Preliminary Training Program will be
provided 90 days after EKO
Wartsilä provides ITP, Engine PCT
protocol 30 days before engine PCT, FAT
protocols for the control system 30 days
before testing and Generator FAT
Protocols ahead of the Generator FAT.
Site Quality Assurance Documentation
(SQAD) will be available after the
equipment is delivered to site.
3D model models for Wärtsilä’s scope of
supply will be provided
6/25/2026
Acceptable
12 General 013300/ 102.17 Review time is recommended to be 14 calendar days, working days are too difficult to
specify, as they are different in different parts of the world.
Y Acceptable 6/12/2026
Stamped document can be uploaded to the comments as attachment. Wärtsilä uses
following responses:
14 General 013300/ 102.20 Wärtsilä is not responsible for delays resulting from design changes submitted late by
the Owner or the Owner’s Engineer.
Y Acceptable 6/12/2026
15
General
013300/ 102.24
Wärtsilä documentation is available in DCM and can be exported by customer
Design documentation Shared in design in DCM and can be exported per transmittal
or as one package.
Y Acceptable 6/12/2026
16 General 013300/ 103.2 Updated 3D models will be submitted as appropriate Y Acceptable 6/12/2026
17 General 13323/ 102.2 a As Fabricated drawings cannot be submitted, As built will be submitted post
commissioning
Y Acceptable 6/12/2026
18
I&C 13323/ 102.2 b
Control Settings aren't provided to end users, this requires signing a EULA. After Sigining
EULA access will be limited to read only until the engines are out of Warranty.
Y In Review
Please confirm if control settings
will be provided to end user after
warranty period. To be discussed
during 7/7 meeting
6/12/2026 Discussed in 7/7 meeting and
deemed acceptable.
19 General 13323/ 102.2 d2 This will Only apply to documents engineered to order rather than standard
documentation
Y Acceptable 6/12/2026
20
General
13323/ 102.2 d2.5 & d2.6
Wärtsilä will use own document numbering and revision system.
The filename is DocumentID and Revision (e.g. Pnnnnn-WAR-mmmm_rr, whereas
nnnnn is the project number, mmmm a running number and rr the revision (from 01
upwards)) followed by the file extension (mainly pdf).
The DocumentID and Revision is stamped in the top right corner.
Y Acceptable 7/1/2026
21
General 13323/ 103.1 a Wärtsilä will submit the standard equipment O&M Manuals - Project specific manuals
won't be created, As built drawing aren't a part of the O&M Manuals and will be
submitted separetly.
Y Acceptable 6/12/2026
22 General 13323/ 103.1B 13324 Shall be superceeded with Appendix I Y See item 4 6/12/2026
Y Acceptable 6/12/2026
013300/ 102.1913
General
Page 2 of 5
22
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Wartsila
23
General 13323/ 103.2 Wärtsilä will submit the standard equipment O&M Manuals.
The QC Check list by suppliers will be requested but will only be submitted if the supplier
approves the release of the document.
OEM documentation is checked by Supplier Document Quality Control team.
Y Acceptable 6/12/2026
24
General 13323/ 103.3 Wärtsilä Provides a customizable training curriculum to customer through Wärtsilä land
and sea academy that is shared before the training is scheduled
Y Acceptable 6/12/2026
25 General 13323/ 103.4/ 103.4 a Wärtsilä will submit the standard equipment O&M Manuals - Project specific manuals
won't be created.
Y Acceptable 6/12/2026
26 General 13323/ 103.7 The O&M Manual will be published on DCM Customer Site per system Y Acceptable 6/12/2026
27
General 13323/ 103.8 Wärtsilä will submit the standard equipment O&M Manuals - Project specific manuals
won't be created nor redaction will performed, As built O&M Manuals and will be
submitted separetly post commissioning
Y Acceptable 6/12/2026
28 General 13323/ 103.9 Wärtsilä will submit the standard equipment O&M Manuals Y Acceptable 6/12/2026
29 General 13323/ 103.12 O&M Manuals will follow Warsila's standards and shall not be modified Y Acceptable 6/12/2026
30 General
13323/ 103.13 O&M Manuals will be submitted in a non editable format, standard and on customizable
manuals will be submitted
Y Acceptable 6/12/2026
31
General
13323/ 104.2
O&M Manuals are delivered 30 days before Commissioning, Draft manuals can be
submitted 30 days after Delivery of Engines and will follow Wärtsilä's standards/
Y Acceptable under conditions that
Wartsila will provide example O&M
manual for reference only during
document review cycle.
7/1/2026
32 General 13323/ 104.3 O&M Manuals will follow Wärtsilä's standards and shall not be modified, all systems will
have O&M Manuals
Y Acceptable 6/12/2026
33
General 13323/ 104.4 a & b
Preliminary O&M Manual will be submitted in PDF format, 30 days after engine delivery
Electronic formatting will follow Wärtsilä's sepcifications and will be submitted in pdf
format and can't be modified.
Post commissioning comments will be implemented in the As built version of the
Manuals.
Y Not Acceptable. Preliminary O&M is
required during detailed design
project phase for reference. Please
confirm this can be provided.
6/12/2026 Wartsila can provide and example O&M
manual from a very similar scope project.
The project preliminary O&M will be
submitted 30 days after engine delivery.
6/25/2026
Acceptable under conditions
that Wartsila will provide
example O&M manual for
reference only during
document review cycle.
7/1/2026
34
I&C 13323/ 105.1
A device list will be submitted to City of Ames NOT A DATABASE
Y Acceptable as long as device list is
provided in native format (excel or
access)
7/1/2026
35 General 13323/ 105.2 The device list will be submitted twice Y Acceptable 6/12/2026
36
General 13323/ 105.3 Customer should assume that all equipment shall be installed by the installation
contractor, Only the the engine assembly will be performed by Wärtsilä personell.
Wärtsilä provides advisors to advice the installation contractor during the installation of
equipment.
Y Acceptable 6/12/2026
37 General 13324/ 101.5 The MDL is created within 30 days of NTP and after EKO and is updated throughtout the
project life.
Y Acceptable 6/12/2026
38
General 13324/ 101.6a The MDL is created per decipline and includes the following information :
System/Category, Document type, Name, Supplier if not Wärtsilä drawing, Doc ID, Rev.
ID, DCM Doc ID, Submittal Package , listing of the customer input required and
comments trelated to the document submittal
Y Acceptable 6/12/2026
39
General
13324/ 101.7
The MDL is created per decipline and includes the following information :
System/Category, Document type, Name, Supplier if not Wärtsilä drawing, Doc ID, Rev.
ID, DCM Doc ID, Submittal Package , listing of the customer input required and
comments trelated to the document submittal
Y Acceptable 6/12/2026
40 General 13324/ 102 The documents in Table 102-1 are going to be replaced by Appendix I Y See item 4 6/12/2026
41 General Section 14500 Wärtsilä will follow our internal Quality assurance and Quality control Protocol Y Acceptable 6/12/2026
42 General 014500 / 101.4 Suppliers contracted by Wärtsilä will adhere to Wärtsilä's previously agreed upon
standards
Y Acceptable 6/12/2026
43 General 014500 / 102.1 Wärtsilä will submit the inspection and test plan, not manuals Y Acceptable 6/12/2026
44 General 014500 / 104.3 Standard Wärtsilä quality procedure will be followed, nothing will be modified.Y Acceptable 6/12/2026
45 General 14500/102.1 Wärtsilä will provide a QEHS for information ONLY Y Acceptable 6/12/2026
46
General 14500/102.3 Non- standard requirement. Possible point of delay for the production of equipment.
Additional cost in case of this additional requirements provided before acceptance.
Which can be agreed on post award
The requested data can be submitted for information only.
Y Acceptable 7/1/2026
47
General 14500/102.3 a
This is a Non Standard requirement, Only engine and auxilary platforms & support steel
structure WPS and PQRs can be provided on additional cost. Which can be agreed on
post award
Y Please confirm if there is a cost
associated with this if documents
are provided for infomration only.
7/1/2026 Can be discussed post award if required. Acceptable
48
General 14500/102.4 Not possible for all the materials. Material certificate will be provided according to the
pertaining standard/codes of the equipment type. The requested data can be submitted
for information only when availalbe.
Y Acceptable 6/12/2026
49 General 14500/102.5 Test reports will be provided along with the final FAT documentation. Any intermediate
"review and acceptance" would halt the production.
Y Acceptable 6/12/2026
50
General 14500/102.7
Witness points should be mutually agreed by both parties and documented in the ITP
which should be agreed within 30 days of contract signing.
Y To be discussed in 7/7 meeting 7/1/2026 Discussed in 7/7 meeting. COA can witness
FAT, generator tests, and/or engine tests.
Acceptable
51
General
14500/103
Manufacturing won't be witnessed, There will be a witness point possible for FAT only,
not during manufacturing.
Documents are not provided for verification during production. Agreed documents will be
provided along with the final documentation. Manufacturing ITP will be provided for
information. only PCT/FAT reports are provided. Other in-house production records can
be viewed during FAT/ PCT. if Performed
Y Acceptable 7/1/2026
Page 3 of 5
23
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Wartsila
52
General 016131 / 103.3
Name Plates shall follow Wärtsilä's naming convention; Engine name plates will have
engine type, Serial number, Power, manufactrung month/year and rpm.
Y Acceptable to use Wartsila naming
convention. Please confirm that
tags will also include manufacturers
name and project number.
6/19/2026 Wartsila confirms the tags will have the
manufactures names. We can not
confirm the project number will on
compenent tags. We will request to be
included where possible. However, for
some components they can not include
this.
We can further discuss this on 7-JUL.
6/25/2026
Acceptable
53
General 016500 / 102
The 18V50DF engine will be disassembled for transportation into major components; the
base frame, engine block, turbo charge and air reciever. Wärtsilä field service engineers
will reassemble the Engine which will then be staged until the last engine is assembled.
The minimum site requirements are shared in Appendix D
Y Acceptable 6/12/2026
54
General 016500/ 103.2
The Equipment is transported via a vessel from Finland then a train and/or trucks, a GPS
tracker can be added to the engines while being transported via rail. The three
Directional impact recorders cannot be provided.
Y To be discussed in 7/7 meeting 7/1/2026 Discussed in 7/7 meeting. Impact recorders
can not be provided for engine transport, but
can be provided for generator transport.
Acceptable
55 General 016500/ 103.4
Equipment other than the engine will be packed in containers, pallets and boxes.
Y Acceptable 6/12/2026
56 General 016500/ 103.10 -
103.11
Containers shall be identified with a weather proof marking
Packing lists will be secured on the outside
Y Acceptable 6/12/2026
57
General
016500/ 104.2
A notice of shipment will be sent to the buyer and packing lists and shall follow Wärtsilä
specification, the BOL description shall follow the guidance of Warsila's importation
team. A Packing list will accompany the shipment and will be submitted 15 days before
shipment
Y Acceptable 6/12/2026
58
General
016500/ 104.3
The Purchaser's site manager will be notified of the delivery date as soon as it is
determined, notification of delivery time within one hour 24 hours in advance is not
feasable due to the transportation method.
Site will need to be notified in
advance of delivery so contractor is
available for offloading. Please
confirm what advanced notice will
be available.
6/12/2026 COA will receive weekly updates from our
freight forwarder and the project team
once the shipment has departed Vaasa
port.
6/25/2026
To be discussed in 7/7
meeting
59 General 016500/ 104.5 This will be governed by the contract. Y Acceptable 6/12/2026
60 General 016500/ 105.3a It is the responsibility of the buyer to fascilitate and provide access to the site Y Acceptable 6/12/2026
61 General 016500/ 105.4
The responsibility of storing the engines after assembly will be governed by the contract.
Y Acceptable 6/12/2026
62
General 016500/ 105.6 The Supplier is responsible for the delivery of engines on the foundation, the Balance of
plant shall be the responsibility of the buyer to unload and maintain once delivered at
site. The division of responsibility is shown on Appendix A and will be governed by the
contract.
Y Acceptable 6/12/2026
63 General 016500/ 106.1 The owner shall inspect the equipment and can be accompanied by the installation
contractor
Y Acceptable 6/12/2026
64 General 016500/ 106.2 Product, equipment and material inspection shall occur in the presence of the supplier
site representative
Y Acceptable 6/12/2026
65
General
016500/ 106.3
The Genset delivery point is on Foundation, while the balance of plant delivery point is
site once the BOP has been delivered it is the responsibility of the site owner or owner
representative to track any of the material as they are being pulled out to be used. No
inventory management system will be used
Y Acceptable 6/12/2026
66
General
99113
An exception is taken to the entire Article
Wärtsilä uses standard coating specifications and protocal and cannot comply with
article 99113.
Wärtsilä's Coating specifications and protocol can be provided after EKO - Specifications
are compliants with the EU specifications
Y Acceptable 6/12/2026
67 General 99113/ 102 Wärtsilä Uses International/European codes Y Acceptable 6/12/2026
68 General 99113/ 103 Wärtsilä is providing the preliminary ITP as appendix K, QA cannot be shared for sub
suppliers unless approved by them.
Y Acceptable 6/12/2026
69
General
099113/ 104 Wärtsilä Uses International/European codes and follows internal QA/QC process
Wärtsilä's Coating specifications and protocol can be provided after EKO
Y Acceptable 6/12/2026
70 General 099113/ 308.1 Repair of damaged coating will occur at site and will be performed by the installer via a
change order directed towards the responsible party.
Y Acceptable 6/12/2026
71
I&C
481127 / 103 B6
Control functionality is not provided from the Local Generation Control Panel located at
the engine hall. However the description in this section refers to control functionality that
is implemented through the Generating Control Panel, typically installed at the Control
Room
Y
Acceptable 6/12/2026
72 I&C 481127 / 103.2 A2,A3,A4A fault-tolerant design philosophy is not included.Y Acceptable 6/12/2026
73 I&C
481127 / 103.3 A3.5.2 Our standard, proven design does not employ HART transmitters; therefore, no HART
modules are included in the Common Control System.Y Acceptable 7/1/2026
74
I&C
481127 / 103.4 A3.5.1
In alignment with our standard design, HART transmitters are not utilized. As a result, the
Local Generating Set Control Panel does not include HART modules.
Y
Acceptable 7/1/2026
75 Electrical
481127 / 103.4 A5 Our standard, proven design does not use SEL meters; Crompton or DEIF meters will be
provided.Y Can you provide a cost adder to
use SEL relays instead?
7/1/2026
SEL relays only used for protection relays
Acceptable
76 Electrical
481127 / 103.4 A6 Synchronization will be accomplished via the AVR in combination with a DEIF Sync
Check Relay. An SEL synchronizing relay is not included.Y Can you provide a cost adder to
use SEL relays instead?
7/1/2026
SEL relays only used for protection relays
Acceptable
Page 4 of 5
24
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Wartsila
77
I&C
481127 / 103.6 B Our standard, proven design does not employ SOE modules, however alarm time stamp
is done at the device level (as Protection relays, PLC’s, Engine controller [governor]) as
well our design has RAID 5 configuration.
Y Acceptable 6/16/2026
78 I&C
481127 / 103.9 C1.2.1 Our standard, proven design does not employ HART-type transmitters and transmitters
with local displays.
Y Acceptable 6/16/2026
79 I&C 481127 / 103.9 C1.2.2 Wire labeling is unique and consistent, with identical numbering at both ends.Y Acceptable 6/16/2026
80 I&C
481127 / 103.9 C1.4 Thermocouples are supplied only for engine cylinders. All other temperature
measurements are RTDs.
Y Acceptable 6/16/2026
81
I&C
481127 / 103.9 C1.5 Only when is required by Code Redundancy and will be supplied. Our proven design
mitigates the single point of failure from shutting down the plant however do not always
have redundant instrumentation.
Y Acceptable 6/16/2026
82 I&C Appendix 1 D1.7.1 Only communication cables will be supplied by Wärtsilä Y Acceptable 6/16/2026
83
Electrical
Appendix 1 D2.10
An Auxiliary Power Study in ETAP is not included.Y
Clarify, an aux power study is
required if Wartsila is to provide the
electrical equipment as shown in
Option F.
6/16/2026 All documentation is shared in pdf
format, OP895963-0146, shows the supply
documents, however they are listed
below.
•Simulation Model Report
•MV 1-Line (Simple)
•MV 1-line (Detailed)
•Short-Circuit Calculation Report
•Short-Circuit Appendix
•Load Flow Calculation Report
•Load Flow Calculation Appendix
•CT Sizing Calculation
•MV Protection Relay Settings
Calculations
•Arc-Flash Analysis Report
•LV Breaker Settings
6/25/2026
Please provide the native files
the documentation is based on
for future revisions. For
example, if the city were to add
future units, these could be
included in the model.
Aux power studies only
provded as PDF
84
Commercial
7.4
The Warranty included in this offer is as per Wartsila Warranty defined in Section 10.2
and 10.3 of the WNA draft contract proposal.
The warranty shall apply for a period ending twenty-four (24) months after the Provisional
Acceptance Date or thirty (30) months after the arrival of the Generator Sets in the
Country, whichever occurs first (the “Primary Warranty Period”). The warranty period with
respect to parts which have been repaired or replaced during the Primary Warranty
Period shall be six (6) months from the date of repair or replacement or until the
expiration of the Primary Warranty Period, whichever occurs later (the “Extended
Warranty Period”); provided, however, that in no event shall the Extended Warranty
Period extend beyond thirty-six (36) months after the Primary Warranty Period began.
The Extended Warranty Period applies only to parts or components of the Equipment
which are repaired or replaced during the Primary Warranty Period and not to the
remaining parts or components or other items of Equipment. Y
See Questions tab Item 2 for
question on warranty.
6/12/2026 The 5 year LTSA does not extend the 2
year warranty included in the equipment
contract.
The LTSA does provide a separate
warranty on the parts and services that
are provided.
6/25/2026 Acceptable
85
Commercial
4 Contract Price,
Progress Payments,
Delivery/ 4.3
Payment terms will be in accordance with Exhibit 2 - Milestone Payments
In Review - pending COA input - to
be discussed 7/7
7/1/2026
86
Commercial
Standard Terms & ConditionsThe Wartsila Equipment Supply Contract (Draft) submitted with Wartsila Firm Offer will
replace the Standard Terms and Conditions except where otherwise noted.
In Review - pending COA input - to
be discussed 7/7
7/1/2026
87
Commercial
Special Conditions for RICE EngineThe Wartsila Equipment Supply Contract (Draft) submitted with Wartsila Firm Offer will
replace the Standard Terms and Conditions except where otherwise noted.
In Review - pending COA input - to
be discussed 7/7
7/1/2026
88
Commercial
Special Conditions
Insurance
Requirements for
Supplier
Applied with some modifications per WNA Firm Offer Exhibit 6 - Insurance Requirement
In Review - pending COA input - to
be discussed 7/7
7/1/2026
Page 5 of 5
25
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
1 Mechanical EVR guarantees noise emissions for its scope of supply
according to EVR 'Sound Emission List'.
Y Acceptable 6/12/2026
2 General Applying Codes and Standards for project scope of supply
are according to EVR 'Technical Specification'.
Y Acceptable 6/12/2026
3 General LOTO concept is not part of EVR standard design.
Requirements and impacts shall be discussed prior to any
design change
Y Acceptable 6/12/2026
4 Electrical terminal boxes comply with NEMA 3 standard.Y Clarify which terminal boxes this
applies to. Term boxes outdoors,
preference is NEMA 3R, those in
hazardous areas NEMA 4X.
6/16/2026 Based on our IP protection classifications, we need to
evaluate the corresponding NEMA ratings.
According to our gas safety concept, there are no
terminal boxes in hazardous areas. Therefore, terminal
boxes with a NEMA 4X rating are not required.
6/26/2026 Acceptable
5 General verification of 3rd party (PE stamp) of any
module/system/structure is not offered; exception: genset
foundation documentation
Y Acceptable 6/12/2026
6 Mechanical Lube oil pump will be shipped loose installed by Others due
to transport reasons
Y Please confirm if lube oil pumps
provided will be skid mounted with
appropriate isolation and
instrumentation. If not provided,
please provide scope adjustment to
include skid mounted pumps with
components for isolation and
instrumentation included within the
pump skid boundary.
6/12/2026 Lube oil supply or transfer pumps are simple pumps that
are not modularised and are part of the plant piping.
They have no isolation valves or instruments, as these
are also part of the plant piping.
6/23/2026 Acceptable.
7 Mechanical EVR will not offer lube oil storage and maintenance tanks,
forwarding pump module will be provided.
Y Additionally, Please confirm if an
option can be provided for Lube Oil
Bulk Storage tanks. See Questions
tab Item 7.
6/12/2026 According to the design philosophy, the
EPC/construction company is responsible for supplying
the tanks.
6/23/2026 Acceptable.
8 Mechanical EVR will not offer reagent storage tanks, forwarding pump
module will be provided.
Y Please confirm if an option can be
provided for reagent storage tank.
See Questions tab Item 8.
6/12/2026 According to the design philosophy, the
EPC/construction company is responsible for supplying
the tanks.
6/23/2026 Acceptable.
9 Mechanical EVR will not offer any type of ventilation units for power
house or auxiliary buildings
Y Please confirm if an option to supply
these units can be provided. See
Questions tab Item 10.
6/12/2026 According to the design philosophy, the
EPC/construction company is responsible for supplying
all building ventilation systems and HVAC.
6/23/2026 Acceptable.
10 Mechanical EVR will not offer a engine coolant heat recovery system
as the engine does not require preheating of the intake air.
As a result, heat recovery benefits decrease significantly
Y Acceptable. 6/12/2026
11 Mechanical EVR will not offer SCR-preheating system, as operating
temperature will be reached in approx. 30 mins
Y Acceptable. 6/12/2026
12 Mechanical Clarification: An intake air heating is even with
temperatures down to -40°F not needed and will not be
offered.
Y Acceptable. 6/12/2026
13 Mechanical Optional low noise components are offered by EVR. Based
on an acoustic study and its findings, further optimizations
can be made. Possible resulting costs are not included in
the EVR quote.
Please confirm lowest noise option
available is being offered for radiator.
6/12/2026 The standard sound power level for the quoted engine
size is offered. Further reductions will be discussed in
detail, as different levels require different improvements
to the cooler design and/or sizing (quantity of units).
6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting -
lower noise options
available, but must be
discussed more
14 Mechanical P&IDs will be delivered during project execution. The EVR
offer includes PFDs
Y Acceptable 6/12/2026
15 Mechanical All specifications for consumables such as fuel gas, fuel oil,
urea-solution, ethylene glycol and lube oil, are specified by
EVR.
Y Acceptable 6/12/2026
Page 1 of 9
26
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
16 General The offer includes a list of the auxiliary electric loads.
Indicative numbers for water and compressed air are given
with the PFDs.
Y Acceptable 7/1/2026
17 General The following will not be provided by EVR with the offer:
Equipment performance curves and data sheets for
operation at the provided conditions included in the
Specification, including speed torque curves for the
equipment.
Y Please confirm why this information
cannot be provided.
6/12/2026 The main characteristics of the generator are included in
our technical specification. However, specific equipment
is subject to the main requirements of the power plant
and may change during the basic and detail engineering
phases.
6/23/2026 Acceptable
18 General Planning and performance data as per EVR technical
specification and its attachments
Y Please confirm the following will be
provided post award with document
submittals "Curves for: start-up and
shutdown; Load vs. Time and
Emission Rates (NOX, CO, VOC),
Exhaust Flow Rate, and Exhaust
Temperature vs. Load"
7/1/2026 Ramping and Loading Curves" (start-up and shut-down,
load over time) and emission rates are part of our
technical specification and were already provided as part
of our offer.
Exhaust flow rate and temperature over load are part of
the "Planning Data" and could be provided on short
notice.
6/23/2026 Acceptable.
19 General EVR will submit standard documents without external
certification.
Per article 102.23 in section 013300,
drawings and documents shall be
certified and stamped in accordance
with the state where the project is
being performed. This requirement
apples to structural steel drawings
and pressure vessels. Please confirm
this requirement can be met
7/1/2026
20 General The EVR offer includes 3D-Models based on the RFP
requirements. Additional requirements are not considered.
Y Acceptable. 6/12/2026
21 General EVR will provide an Engineering Documentation Submittal
List (EDSL) which shall replace Table 102-1.
See item 51 in the questions to
propser tab.
6/19/2026 Answer in item 51 in the questions to propser tab. 6/23/2026
22 Structural EVR will provide their equipment with corrosion protection
according to EVR guideline <Q10.09028-5013>, based on
ISO 12944, with C3-H for inside and outside application.
Structural Steel will be hot dip galvanized.
Y Acceptable 7/1/2026
23 General EVR can not guarantee that each supplied equipment is
capable of a mechanical and electrical isolation.
Acceptable for mechanical. In Review
for electrical.
7/1/2026
24 General Clarification: EVR is only responsible for delivered scope.
The scope is defined in the EVR-Document “Division Of
Works” (DoW).
Y Agreed, but based on final scope
agreed upon at time of award.
6/12/2026 Ok 6/23/2026 Acceptable.
25 Structural The alternator is mounted on a concrete foundation. The
alternator has no connection to the welded steel base
frame of the engine.
Y Acceptable 6/12/2026
26 General Generator exhaust air will be blown vertically to the top.
Position of ridge vent has to be defined according to
generator positioning and overall flow requirements and
restrictions proposed with the help of a CFD study (not in
EVR scope)
Y Acceptable. 6/12/2026
27 Mechanical Clarification: EVR will provide a recommendation about the
crane coverage and rating requirements but since the
crane is not in EVR scope, no guarantees are provided for
this.
Y Acceptable. 6/12/2026
Page 2 of 9
27
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
28 Structural EVR will provide the standard design for platforms. Here,
there are a few rarely used platforms that can only be
reached by ladder.
Y Please confirm which platforms will
included stair access and which are
currently assumed to provided ladder
access. Preference is for stairs but
will need to be reviewed.
7/1/2026 Engine and auxiliary service platform inside
powerhouse:
- Levels 1 and 2: Stairs
- Level 3: By ladder.
SCR and intake air service platform:
- By stairs for all levels.
Exhaust gas stack:
- No access.
Radiator service platform:
- By stairs.
6/23/2026 Acceptable.
29 Mechanical The provided EVR gas control line is only able to fulfill the
requested requirements if the fuel gas upstream of it meets
certain pre conditions e.g. pressure and temperature
range. The pre conditions are defined in the EVR technical
specification.
Y Acceptable. 6/12/2026
30 Mechanical Emergency shutdown valve with automatic vent valve will
not be provided by EVR.
Y Please confirm if option for
emergency shutdown valve with
automatic vent valve can be
provided.
6/12/2026 A plant-related fuel gas shut-off valve with automatic
venting will not be provided.
6/23/2026 Acceptable.
31 I&C EVR flow meter will be of type 'flowsic500', which is self-
monitoring but not officially called OBMV. No trim pressure
regulation (not required for metering), no automatic vent
valving (plant scope), not automatic isolation (plant scope)
will be included.
Y Flow meter type in review. If no trim
pressure regulation is required at the
engine units that is acceptable. See
item 30 above regarding automatic
vent valving and isolation.
6/12/2026 Noted.
For more information, please see the answer to item 30.
6/23/2026 Acceptable.
32 Mechanical Shut off valves for each engine and for common fuel line
will not be provided by EVR.
Y See item 30 above. 6/12/2026 ok 6/23/2026 Acceptable.
33 I&C EVR will offer their standard flow meter which has the
following main features: Coriolis mass flow meter with
transmitter, accuracy at pump nominal capacity +/- 0.5%,
calibration certificate, pressure drop of less than 0.3 bar at
70°C.
Y Acceptable 6/16/2026
34 I&C Fuel oil flow meter will not have 40CFR60 certification.Y Acceptable 6/19/2026
35 Mechanical Fuel oil forwarding pumps, which have the purpose to
transport fuel from storage tank to engine booster cycles,
will be designed for indoor installation. The recommended
EVR layout places the pump in the pump house next to the
unloading area.
Y See item 16 in questions tab. 6/12/2026 See answer in item 16 in Questions tab. 6/23/2026
36 Civil The foundations have to be designed meeting pipe and
utility racks requirements.
Y Acceptable 6/12/2026
37 Mechanical EVR will not provide storage tanks for lube oil.Y See Questions tab item 7 6/12/2026 See answer in Questions tab item 7 6/23/2026 Acceptable
38 Mechanical The mobile pump units will not be provided by EVR.Y See Questions tab item 19 6/12/2026 See answer in Questions tab item 19 6/23/2026 Acceptable
39 Mechanical To keep the piping system simple, EVR will provide two
lube oil pumps for the connection between storage tank to
RICE and two lube oil pumps between maintenance tank
and RICE, each pump is 100% redundant.
Y See Questions tab item 12 6/12/2026 See answer in Questions tab item 12 6/23/2026 Acceptable
40 Mechanical EVR will provide pumps as single components to be
installed in free piping. The other components suction side
strainer, filtration, thermometer, temperature transmitter,
piping, fittings, valves, specialties, electric heater, and a
control panel will not be provided by EVR.
Y See Questions tab item 12 6/12/2026 See answer in Questions tab item 12 6/23/2026 Acceptable
41 Mechanical EVR concept does not consider filtering in lube oil supply
line. Filtering is applied in the lube oil cycle and the
cleaning is done in the secondary cycle (See Lube oil
PFD).
Y Acceptable 6/12/2026
42 Mechanical For starting air EVR provides one skid with two mounted
compressors and each compressor has 100% of the
needed capacity.
Y Acceptable 6/12/2026
43 Mechanical The air receivers provide six starts in total. Two receivers
with 5.500 ltr each are foreseen.
Y Acceptable 6/12/2026
Page 3 of 9
28
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
44 Mechanical Each by EVR provided starting air compressor can be
electrical isolated. For mechanical isolation, manual shut
off valves are mounted at the compressors outlet.
Y Acceptable 6/12/2026
45 Mechanical A automatically disengage of the starting pinions is not
needed and not provided by EVR. The starting air
compressors operate independently from the RICE engines
and their starts. The compressors are controlled by the
pressure of the starting air receivers.
Y Acceptable 6/12/2026
46 Mechanical From EVR provided starting air compressors will not be
equipped with exhaust silencer and vapor arrestor.
Y Please confirm if option can be
provided to reduce Starting air
Compressor dB(A) provided in Annex
9 - Equipment Sound List.
6/12/2026 We can offer optional encapsulation of starting air
compressor modules.
6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 interview
and deemed not required
47 Mechanical From EVR provided starting air receivers will be equipped
with pedestals instead of support base rings.
Y Acceptable 6/12/2026
48 Mechanical Instead of a manhole, an inspection hole will be part of the
starting air receivers. Vacuum relief valve will not be
included as operation range will be 15-30 bar(g). Ladders,
handrails, support clips for piping, conduit will not be
included in EVR scope.
Y Acceptable 6/12/2026
49 Mechanical The starting air receivers will not have a manhole, they are
equipped with a inspection hole with a size of 15”.
Y Acceptable 6/12/2026
50 Mechanical The EVR concept uses the atomization air compressors
also to generate instrument air. The requested redundancy
for instrument air compressors is not applicable. The
atomization air compressors are designed to fulfill two
times 100% of the needed air which is atomization air plus
instrument air (instrument air is also called control air in
EVR terminology).
Y Acceptable; however, please confirm
if additional compressor capacity can
be provided to support 100 scfm of
periodic service air usage.
6/12/2026 Confirmed. Additional 100 SCFM are included in the
compressor capacity.
6/23/2026 Acceptable
51 Mechanical The EVR layout recommends to install the compressor in a
compressor house and not inside of the power house. The
compressors are not designed for ambient temperatures
above 40°C (104°F).
Y Please confirm if an alternative
option can be provide that would
allow for the compressors to be
located internal to the engine hall.
6/12/2026 Compressor units must be installed in an air-conditioned
room to maintain the required maximum temperature
level, taking the treatment process into account.
This requires installation in a specific compressor
building or an extension of the compressor room within
the E-Annex. However, this solution may directly lead to
a larger E-Annex, which could be avoided by planning a
"low-budget" compressor house.
6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting.
Compressors should be
located in a dedicated
compressor room.
52 Mechanical Atomisation air modules will be provided as single
modules. Electrical and mechanical isolation will be
possible.
Y Acceptable 6/12/2026
53 Mechanical Climatic design conditions for compressors are given in
EVR technical specification and have to be fulfilled.
Y See item 51 above. 6/12/2026 See answer in item 51. 6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting.
Compressors should be
located in a dedicated
compressor room.
54 Mechanical Since a desiccant air dyer is used, no E-stop button near
the front interface for emergency stopping is by EVR
considered. The only moving parts are changeover valves.
Y Acceptable 6/12/2026
55 Mechanical For mechanical isolation only manual shutoff valves at the
compressor’s outlet are provided.
Y Acceptable 6/12/2026
Page 4 of 9
29
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
56 Mechanical The EVR layout recommends to install the instrument air
dryers in a compressor house and not inside of the power
house. The modules are not designed for ambient
temperatures above 40°C (104°F). Climatic design
conditions are given in EVR technical specification and
have to be fulfilled.
Y See item 51 above. 6/12/2026 See answer in item 51. 6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting.
Compressors and
associated equipment
should be located in a
dedicated compressor
room.
57 Mechanical If the stamp is due to the low volume not required by law,
EVR will deliver it without stamp.
Y Stamps are required for pressure
vessels above 15 psi. Please confirm
this will be provided.
6/12/2026 will be provided 6/23/2026 Acceptable
58 Mechanical Technical features like velocity will follow subsuppliers
standard design.
Y Acceptable 6/12/2026
59 Mechanical Technical execution will follow subsuppliers standard
design.
Y Acceptable 6/12/2026
60 Mechanical Piping will be made of carbon steel.Y Please confirm if an option can be
provided for system to be provided in
stainless steel.
6/12/2026 We see no need for an air system with stainless steel
piping. Standardized modules and components are
made with carbon steel. The system includes an oil and
water separator, as well as an air dryer.
6/23/2026 Acceptable
61 Mechanical The filters will remove only water, oil and particles.Y Acceptable 6/12/2026
62 Mechanical All filters will be designed according to ISO 8573-1. The
specific compressed air requirements are defined in the
EVR Technical specification in the chapter compressed air.
Y Acceptable 6/12/2026
63 Mechanical Filters will not be equipped with isolation and bleed valves.Y Acceptable 7/1/2026
64 Mechanical EVR will provide two receivers with 5000 ltr. for atomization
air which will also be used by instrumentation air.
Y Acceptable 6/12/2026
65 Mechanical Instrument and atomization air receivers will be equipped
with pedestals instead of support base rings
Y Acceptable 6/12/2026
66 Mechanical Instead of manhole an inspection hole will be part of the
atomization air receivers. Ladders, handrails, support clips
for piping and conduit will not be included.
Y Acceptable 6/12/2026
67 Mechanical For EVR RICE units, ethylene glycol has to be used for anti-
freezing. Propylene glycol is not permitted.
To be discussed in 7/15 meeting 7/1/2026
68 Mechanical The cooling system will be controlled by motor driven 3 -
way-valves as defined in b3.1. Thermostatic valves will not
be needed and not delivered.
Y Acceptable 7/1/2026
69 Mechanical Clarification: thermal short circuit is not an issue of the
cooling water radiators if linear inlet and outlet air flow is
provided. This has to be assured by appropiate alignment
of the power plant. Therefor EVR recommends to carry out
a CFD analysis of the plant configuration (by others).
Y Acceptable 6/12/2026
70 I&C Cooling pumps will not be equipped with vibration and axial
position transmitters.
Y Acceptable 6/16/2026
71 I&C Vibration switches will not be in scope of EVR supply.Y Acceptable 6/12/2026
72 I&C Coolant pumps will not be equipped with bearing and motor
temperature transmitters.
Y Acceptable 6/12/2026
73 Mechanical Intake air heaters are not needed and therefor not
provided.
Y Acceptable 6/12/2026
74 Mechanical The size of the maintenance water tank is designed to hold
the coolant from single sections of the RICE cooling. The
tank is not designed to hold the whole coolant of one
engine.
Y Acceptable 6/12/2026
75 Mechanical The piping material to mechanically lock the maintenance
water tank is not part of EVR scope.
Y Acceptable 6/12/2026
Page 5 of 9
30
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
76 I&C The maintenance water pump will not include flow
transmitters.
Y Acceptable 6/16/2026
77 Mechanical Clarification: Intake air modules will be equipped with snow
protection. This will be a non-movable louvre or hood
solution.
Y Acceptable 6/12/2026
78 Mechanical Pocket filters (dry type) will be part of the intake air module
which is positioned close to the power house wall.
Y Acceptable 6/12/2026
79 Electrical intake air module area contains no hazardous zone,
explosion proof components are not foreseen
Y Acceptable 6/12/2026
80 Mechanical Clarification: The test ports will be located near the ground
in horizontal ducting.
Please confirm if test ports can be
provided on the stack as well. Test
port locations must meet EPA
method 1 requirements.
6/19/2026 not with current design:
- vertical exhaust gas silencer doesn't allow for test ports
after silencer outlet with current height
--> extension of ducting (outlet height) and steel
structure necessary
- with test ports at horizontal ducting there is no need for
access to the top of the chimney
--> redesign of steel structure necessary
EPA method 1 requires 2D+0.5D in minimum. Our
design is based on 3D+1D.
This shall be enough in our opinion, please advice
6/23/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting.
Current design is
acceptable and can be
adjusted post award if
needed.
81 Mechanical design and delivery of exhaust gas insulation is by others.Y Acceptable 6/12/2026
82 Mechanical The offer includes a stack described as per EVR Layout
Proposal and Technical Specification.
Y Acceptable 7/1/2026
83 Mechanical Exhaust gas test ports will be located near the ground in
horizontal ducting. Test ports are not part of the stack
Y See item 80 6/19/2026 see answer to item 80 6/23/2026 Acceptable
84 Mechanical Drain piping and drain pot are not in the scope of EVR.Y Acceptable 6/12/2026
85 Mechanical EVR will not deliver or design the insulations Y Acceptable 6/12/2026
Page 6 of 9
31
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
86 Mechanical Clarification: The exhaust gas treatment system is
equipped with NOx analyzer to maintain necessary urea
mass flow for injection purpose. We assume parameter
monitoring will be used for emission control. A Continuous
Emission Monitoring System (CEMS) is not foreseen and
the catalyst is not designed for such operation.
Y Acceptable 6/12/2026
87 Mechanical Type and size of maintenance access will be according to
supplier standard.
Y Acceptable 6/12/2026
88 Mechanical The catalyst layer are not designed for test blocks.
Sampling can be done by test drills.
Y Please provide more information
about how test drilling process works
so it can be determined if this is
acceptable.
6/19/2026 In a first step a hole is drilled in the honeycombs using a
hole saw with approximately 1 in. diameter. The drilling
process is dry and done with a commercially available
drill. The hole is usually not drilled through the entire
depth of the catalyst honeycomb. The probe is then
shipped in the laboratory for analysis. The hole is filled
with high temperature cement to seal the area. The area
of the 1 in. hole is neglectable compared the total cross
section of the catalyst and has only a minor impact on
the catalyst performance.
6/23/2026 Acceptable
89 Environmental General comment:
-Emission limits and test methods as EVR Technical
Specification and EVR Site Acceptance Test Procedure.
-Emission control is assumed via parameter monitoring
Y Acceptable 6/12/2026
90 Mechanical A test port upstream and downstream of the reactor is
considered. Each test port has two ports which have an
offset of 90 degrees.
Y Acceptable 7/1/2026
91 Mechanical The test port will have blind flanges and no threaded ball
valves.
Y Acceptable 6/12/2026 To be discussed in 7/15
meeting
92 I&C Clarification: EVR provides a separate control system for
the urea dosing unit. Communication between the RICE
control system and the dosing unit control system is
ensured.
Y Acceptable 6/12/2026
93 Mechanical EVR will not provide calculations, equations, and curves for
liquid reagent control system and SCRs.
To be discussed in 7/15 meeting 7/1/2026
94 General Clarification: Test procedures will be determined and
executed according to sub suppliers standards.
Y Acceptable 6/12/2026
95 Electrical Installation of power cables on modules will be done with
the installation at site.
Y Acceptable 6/16/2026
Page 7 of 9
32
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
96 Electrical EVR will provide skids with electrical design/components
according to EVR standard.
Y Provide EVR standard for review 6/16/2026 There is no document available to provide the EVR
design standard for all mentioned requirements.
We define minimum design and construction
requirements towards our sub-suppliers which have
finally the flexibility and competence on their own
authority to comply with it.
Summary of the main issues for single components or
materials:
- UL, NEMA, NEC, NFPA, …, standards will be followed
where applicable and necessary
- Proper design and construction fit for purpose in terms
of cable routing, installation and termination to avoid any
damage due to mechanical (e.g. vibration) or climatic
(e.g. exposure to excessive ambient temperatures)
conditions
- explosion rated equipment if neceessary due to
location / ambient conditions
- optimized in terms of safety, operational flexibility,
performance
and system reliability
Although we meet the basic requirements, there may be
some specific points where design differs finally.
6/26/2026 Acceptable
97 Electrical Electrical motors will be designed and supplied acc. to
following minimum EVR standard requirements:
- Standard: UL certified / approved for use in USA
- Motor type: Squirrel cage, TEFC-types (total enclosed fan
cooled)
- Rated voltage: AC 3~ with voltage tolerance according to
NEMA +/- 10%
- Inculation class: Min. F
- Temperature rise class: B
- IP Class: Min. NEMA 3S (acc. to NEMA 250)
- Efficiency Standard: NEMA MG-1 equivalent (min IE36)
- Efficiency Requirement: Min. NEMA premium (IE3)
- Operation mode: Continuous duty
- Anti-condensate heaters: Required for all motors located
outside (except EC) and indoor motors ≥ 25 kW
Y Acceptable 6/16/2026
98 Mechanical Exhaust gas test ports will be located near the ground in
horizontal ducting. No test ports at the stack are
considered.
Y Acceptable 7/1/2026
99 I&C EVR will not provide a RTU Please confirm if Everllence can
provide option for RTU
6/16/2026 No dedicated RTU will be provided. A non-redundant
communication link to the dispatch system will be
established via the DNP3 protocol.
6/26/2026
100 I&C EVR will not provide a SEL meter, it is a Siemens meter for
measuring. No metering for tariff purpose. Only for operator
information.
Y Acceptable 6/12/2026
101 I&C EVR will not provide a SEL sync relay. Genset
synchronization is possible via AVR sync function (ABB
Unitrol 1020).
Y Acceptable. Please confirm if
generator protective relays will be
SEL
6/16/2026 Confirmed, generator protective relays will be SEL. 6/26/2026 Acceptable
102 I&C EVR will not provide a Plant Historian Server.
EVR´s plant control system is able to store data for trends
longer then 3 months.
EVR will provide a OPC-UA communication link to
purchasers historian server.
Please confirm if a historian can be
provided a a cost adder.
6/19/2026 Providing a plant historian is technically feasible. EVR
can offer a plant historian solution as an optional scope
and provide the associated cost adder.
6/26/2026 To be discussed in 7/15
meeting
Discussed in 7/15 meeting.
Can be provided, but still
need to see the optional
cost.
Page 8 of 9
33
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
PROPOSER TECHNICAL EXCEPTIONS AND CLARIFICATIONS Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER:Everllence
No. Department Comment
Requirement
Different than
Seller's Standard
Offering (Y/N)
Commercial
Impact to
Comply
(Y/N)
Acceptable? Owner / Engineer Responses Response
Date Proposer Response Response
Date Owner / Engineer Responses Proposer Response
103 I&C According to EVR standard, separate servers will not be
provided.
Y Acceptable 6/16/2026
104 I&C EVR will not provide a DMZ server. All external
connections are via VPN router.
Y Acceptable 6/16/2026
Page 9 of 9
34
C-2520 Letter of Recommendation Date: July 24, 2026
Exhibit 2 – Proposer RFC Logs
35
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER: Wartsila
# Discipline
Specification
Reference/Proposal
Reference
Question Question Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
1 Structural Appendix A Section B
In sections B1.1, B1.10.1, B1.10.2, B1.10.6 and
B1.10.7, the note "Wartsila provides material"
follows the line item for superstructures and
foundation bolts. Additionally, both Wartsila and
City of Ames are marked as responsible for
these items. Please clarify Wartsila's scope for
these items. 6/12/2026
Wartsila provides material and customers EPC
contractor installs the materials.
6/25/2026 Acknowledged Y
2 Commercial Bid pricing form
A cost adder was provided for a 5-year LTSA,
and separate adder was provided to extend the
warranty from 2 years to 5 years. Does the 5
year LTSA cost also include extension of the
warranty to 5 years (i.e. if the 5 year LTSA is
executed, is the warranty automatically
extended to 5 years without having to pay the
additional adder)? 6/12/2026
The 5 year LTSA does not extend the 2 year
warranty included in the equipment contract.
The LTSA does provide a separate warranty on
the parts and services that are provided.
6/25/2026 Acknowledged Y
3
Instrumentation
and Controls Appendix B, section 0.4
Calibration gases for a CEMS system are
discussed. Please confirm continuous
monitoring system is for control of SCR reagent
injection and no CEMS is being provided as it is
not required for plant air emissions permitting. 6/12/2026
No CEMS is provided.
The Wartsila control system will control Urea
injection without a CEMS system.
Most of our Wartsila power plants to not have
CEM's systems installed.
6/25/2026 Acknowledged Y
4 Mechanical Appendix F
Confirm that reagent consumption rates (73 l/hr
on gas and 473 l/hr on LFO) are on a per
engine basis 6/12/2026
Yes, consumption rates are per engine
6/25/2026 Acknowledged Y
5 Mechanical Appendix B A2.3
Please confirm the lubricating service oil tank is
sized to hold 100% of the oil from one engine.
The service oil tank is sized at 16M^3 while the
new and used lube oil tanks are each 31 M^3. 6/12/2026
Each engines has ~3,620 gal. (13.7 M'3)
6/25/2026
Is the 3,620 gal for the oil resevoir, or the entire filled
engine lube oil system? Y
Per 7/7 meeting, it is for the oil
resovoir.
6
Mechanical 481127
101.30.b/Appendix B
A5.2
It is stated that the SCR reducing agent storage
capacity is sized for all engines (size listed is
190 m^3). What is the duration and operation
mode assumed for this sizing?
Per the specification section referenced, COA
desires this tank to be sized to support 2 days
of full load operation on fuel oil for 6 engines
(this size is in order to accommodate a future
expansion of 3 additional engines). What would
be the cost adder to increase the size to this
capacity?
6/12/2026 Urea storage tank is sized for 2 days of full load
on fuel oil for 6 engines which is 36,000 US
gallons but we sized the tank for wrose case
scenario. Wrose case scenario consumption
rate is 600 l/h on fuel oil at base load which is
158.5 US gal/h. 158.5 x 24 hours is 3,804 gallons
per engine. 3,804 gallons x 2 days is 7,608
gallons. 7,608 x 6 engines is 45,648 gallons
6/25/2026 Please confirm diemsnions of the tank. Y
7
Mechanical Proposal pricing form
No costs were provided for 'Spare parts for 2
years of operation and maintenance'. Please
provide a cost adder to furnish 2 years spare
parts.
6/12/2026 The parts needed to cover 2 years of operation
and planned maintenance are already included
in the indicative estimates provide in the LTSA.
(The indicative pricing assumes running hours
as stated in the 5 year LTSA: maximum of
11,750.
6/25/2026
To be discussed in 7/7 meeting. Will spares be sent to
site? How much space is required for storage on site?
Y
Discussed in 7/7 meeting.
Spares provided as part of
LTSA. Critical spares and the
space associated with them
provided as proposal
addendum.
8
Mechanical Proposal pricing form
No costs were provided for the option 'Spare
parts (recommended for 3-5 years)'. Please
provide a cost adder or estimated cost for this
item.
6/12/2026 The parts needed to cover 3-5 years of operation
and planned maintenance are already included
in the indicative estimates provide in the LTSA.
(The indicative pricing assumes running hours
as stated in the 5 year LTSA: maximum of
11,750.
6/25/2026
To be discussed in 7/7 meeting
Y
Discussed in 7/7 meeting.
Acceptable
9
Commercial Proposal pricing form
No costs were provided for the option 'Two-
Year Long Term Service Agreement (LTSA)'.
Please confirm that an option for a 2 year LTSA
can be provided.
6/12/2026 We strongly recommend the 5 year LTSA which
provides optimized cost and benefit for COA.
However, we can discuss shorter terms if COA
has critical preference. (Note: At 2 years with
the run hour assumptions the engines are only
reaching 4,700 hours).
6/25/2026
To be discussed in 7/7 meeting
Y
Discussed in 7/7 meeting.
Acceptable
Page 1 of 4
36
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER: Wartsila
10
Mechanical General Arrangement
Please see attached GA. Fuel Oil pumps are
currently planned to be located next to fuel oil
tanks and not adjacent to the unloading plan by
the engine hall. Please confirm pumps quoted
can accommodate the anticipated location for
this equipment.
6/12/2026 The unloading pumps are located next to the
pirmary storage tanks. The unloading pumps
are in the customer scope.
The forwarding pumps are indoor rated and are
located in the pump building next to the fuel
tanks and this appropriately located to supply
forwarding of fuel oil to the engine locations.
6/25/2026 Acknowledged Y
11
Mechanical Appendix 2 Performance
Guarantees
Please see Appendix 2 Performance
Guarantees file in original specification posting.
Please fill in information requested and return
for review.
6/12/2026 Wartsila is only providing Guarantee at 100%
load for full plant output. We have already
provided the other performance load points, but
these are indicative reference only.
6/25/2026
This sheet is used as part of the proposal evaluation.
Please fill out the the highlighted cells in the sheet,
which indicate infromation that was not found in the
proposal.
Y
Filled out and provided as
proposal addendum
12
Electrical Appendix A Scope of
Supply Please provide cost adder for emergency diesel
generator. It is recommended this unit be
furnished by OEM due to complexity with
coordinating with OEM provided electrical
system.
6/12/2026 Yes, we can proivde black start generator
option. Wartsila will provide the price for this
option on or before the 7-JUL meeting.
6/25/2026 Acknowledged Y
13
Mechanical Appendix G - Noise
Guarantee
Wartsila has previously provided more detailed
noise inputs for consideration. Can Wartsila
provide this detailed noise datasheet? Please
also include equipment based sound offerings
and optional equipment (i.e.. low noise radiator)
sound offerings.
6/12/2026 Wartsila has provided a well documented noise
gauranteee in Appendix G - Noise Guarantee.
The source references are; engine, exhaust
stack exit, intake, & radiator.
Wartsila has already provided our lowest noise
attenuation options for the following scope
items:
- radiators (level 4)
- exhaust stacks (inlcudes 45 dba and exhaust
gas silencer with a pre-silencer).
- Intake plenum (includes 45 dba charge air
silencer and 600 mm baffles).
6/25/2026 Acknowledged Y
14
Mechanical Appendix A Scope of
Supply Please provided cost add to furnish fuel gas
emergency shutdown and vent valves.
6/12/2026 Wartsila will provide a price adder to include
this in our scope of supply. The price for this
option will be provdided on or before 7-JUL mtg.6/25/2026 Acknowledged Y
15
Instrumentation
and Controls
Appendix F Exhaust
Emission Guarantee
Please provide locations of emissions
monitoring ports according to relevant EPA
guidelines.
6/12/2026 Appendix J2 - Engine Hall Section notes the
location of the emissions measuring ports.
6/25/2026
Please confirm there are ports upstream of the SCR as
well. Also, please confirm that these ports conform to
EPA testing method 1.Y
Discussed in 7/7 meeting.
Flexible to adjust emission port
sizes and location after award.
Acceptable
16
Mechanical Exhibit 8 Performance
Test Guidelines No FAT protocols were given for the engines,
generators, or controls system(s). Please
provide FAT protocols for engines, generators,
and controls system(s).
6/12/2026 FAT Protocols are provided after Contract
signature and 15- 30 day before FAT.
6/25/2026 Acknowledged Y
17
Instrumentation
and Controls
Appendix B Technical
Specification Please provide WDAAA184151 document
referenced in Appendix B.
6/12/2026 Attached is document WDAAA184151 which is a
simple P&ID as showen in figure 2 in Appendix
B 6/25/2026 Acknowledged Y
18
Commercial/Gener
al
Exhibit 8 Performance
Test Guideline/ Price
Form
Please provide option for blackstart testing of
gensets.
6/12/2026 This will be provided during the pre-
commissioning phase of the project.
6/25/2026 Acknowledged Y
19
Electrical Appendix B Technical
Specification
Confirm all necessary LV cubicles are included
as is noted in the specification Single Line
Diagram, two tie breakers, and an incoming
feeder breaker for a RAT, and a black start
generator breaker 6/16/2026
All the provided cubicles are indicated in the
doc P26415-WAR-0010 and P26415-WAR-0009
6/25/2026
Adjust offering based on the recently transmitted Single
Line
Y
Adjusted per 7/17 offer
20 Electrical Appendix B Technical
Specification
Confirm the LV Switchgear and Wartsila
auxiliaries are black start capable 6/16/2026
Yes, it will be black Start capable.
6/25/2026
Acknowledged
Y
21
Electrical Appendix B Technical
Specification
Clarify where the Radiator panels are to be fed
from
6/16/2026
Electrically from the Engine MCC's, to the VFD
and later to a field distribution panel typically
install under the generators.
6/25/2026
Acknowledged
Y
22
Electrical Appendix B Technical
Specification
Confirm arc flash study will be performed and
arc flash labels will be provided if Option F is
exercised 6/16/2026
Yes, it will be performed and labels will be
provided.
6/25/2026 Acknowledged Y
23
General App C1A and C1B Please confirm whether the guaranteed
electrical output listed (54,396 kW) is on a net
or gross basis. If it is a gross value, please
provide a net value as well.6/19/2026
kW guarantees are defined at the generator
terminals as a gross value, since certain
parasitic loads are excluded from our scope of
supply 6/25/2026 Acknowledged Y
24
Mechanical App C1A and C1B Please confirm whether the heat rate provided
is on gross or net value. If it is a gross value,
please provide net value as well.
6/19/2026
Heat rate guarantees are defined at the
generator terminals as a gross value, since
certain parasitic loads are excluded from our
scope of supply 6/25/2026 Acknowledged Y
Page 2 of 4
37
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER: Wartsila
25
Mechanical App G - Noise Guarantee Confirm whether the exhaust stack exit sound
level (92 dBA) includes the 45 dBA attenuation
from the silencer. i.e., is the final measured
sound at the exit 92 dBA or 47 dBA?
6/19/2026
The guarantee level is 92dB(A) which includes
45dB(A) exhaust gas silencer, nonwool resistive
pre-silencer, and SCR
6/25/2026 Acknowledged Y
26
Mechanical App G - Noise Guarantee Confirm whether the intake sound level (88
dBA) includes the 45 dBA attenuation from the
silencer. i.e., is the final measured sound at the
exit 92 dBA or 43 dBA?
6/19/2026
The guarantee level is 88dB(A) which includes
45 dB(A) charge air silencer and 600 mm baffles
6/25/2026 Acknowledged Y
27
General Appendix I - Document
Submittal Schedule
Please confirm that the Document Submittals
will include:
'-Master Document List (updated monthly)
submitted 30 days after EKO
'-Project Schedule (updated monthly) submitted
30 days after EKO
'-Monthly progress reports
'-O&M Training Program and Training Manuals
90 days after EKO
'-Quality Assurance / Control Procedures 90
days after EKO
-3D model models of all mechanical
equipment, skids, and Wartsila provided piping
/ ducting, etc. 6/19/2026
The Monthly progress reports will include the
Master Document List and Project Schedule will
be submitted 30 days after EKO.
Preliminary Training Program will be provided
90 days after EKO
Wartsilä provides ITP, Engine PCT protocol 30
days before engine PCT, FAT protocols for the
control system 30 days before testing and
Generator FAT Protocols ahead of the Generator
FAT.
Site Quality Assurance Documentation (SQAD)
will be available after the equipment is delivered
to site.
3D model models for Wärtsilä’s scope of supply
will be provided
6/25/2026
Submittal schedule updated per S&L comments.
Acceptable
Y
28
Mechanical App B - Technical
Specification A2.3
Please confirm the lube oil system will include
a lube oil heater and all required skid mounted
piping and valves.
6/19/2026
Confirmed. The lube oil heater is included in the
tank. The tank insulation is not included in
Wartsila scope. The tank will need to be
insulated by others. The forwarding pump skid
includes the piping, valves, strainers. The
forwarding pump is not heat traced and needs
to be located in a heated location.
6/25/2026 Acknowledged Y
29
Mechanical App B - Technical
Specification A2.4
Please confirm the compressed air systems will
include all skid mounted piping and valves.
6/19/2026
The compressed air sytems includes separate
units for the dryer and receiver tanks. The relief
valves, piping, and regulators between these
units are not included in the Wartsila scope.
6/25/2026 Acknowledged Y
30
Mechanical App J.4 - Power Plant
Site
Please provide dimensions of radiators
6/19/2026
There are (5) banks of radiators per engine.
Each radiator bank has the following
dimensions:
Length: ~460 inches
Width: ~102 inches
Height: ~83 inches
6/25/2026 Acknowledged Y
31
Mechanical App B - Technical
Specification A2.5
Please confirm if cooling system includes high
temperature circuit expansion vessels and skid
mounted piping and valves
6/19/2026
Each engine exhaust gas module is equipped
with its own cooling water expansion tank.
6/25/2026 Acknowledged Y
32
Mechanical /
Structural
App B - Technical
Specification A2.6
Please confirm a platform will be provided for
access to the charge air filters and engine hall
ventilation 6/19/2026
The Wartsila scope includes a platform for the
charge air filer and engine hall ventilation.
6/25/2026 Acknowledged Y
33
Mechanical App B - Technical
Specification A5.2
Please confirm the SCR system includes Nox
analyzers, sampling umbilical, sample line
raceway, and the required steel supports. 6/19/2026
The Wartsila scope includes Nox analyzers. The
sampling umbilical, sample line raceway, and
the required steel supports are note in Wartsila
scope and need to be provided by others.
6/25/2026
Please confirm that this scope can be provided as an
option per option C. To be discussed in 7/7 meeting
Y
Discussed in 7/7 meeting.
Umbilical, raceway, and steel
supports to be provided by
others. Acceptable
34
Mechanical App B - Technical
Specification A5.2 Please describe the emissions monitoring ports
that are included upstream and downstream of
the SCR system for performance testing. 6/19/2026
The emission measuring ports are referenced in
the Appendix J2 - Engine Hall Section drawing.
6/25/2026
See item 15
Y
35
Mechanical App B - Technical
Specification A5.2
Please confirm the SCR system will include all
skid mounted piping and valves.
6/19/2026
The Wartsila provided reagent pump includes
skid mounted valves and piping.
6/25/2026 Acknowledged Y
36
Structural Appendix A, scope of
supply, b1.10.6
Stack superstructures are shown as in City of
Ames scope. We would expect this to be in
Wartsila scope. Please confirm
6/19/2026
Wartsila has defined single self supported
stacks in our scope of supply per Appendix J4 -
Power Plant Site. Cluster stacks could be
provided an option if COA prefers.
6/25/2026 Acknowledged Y
Page 3 of 4
38
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF PROPOSER: Wartsila
37
General App B - Technical
Specification, K1
Which Wartsila facility would training occur at?
Is it possible for the training listed for 'At
Wartsila Facility' to be performed at site
instead?
6/19/2026
For the equipment contract we have proposed 2
training sessions in Wärtsilä land and sea
academy in Ft. Lauderdale, and 2 training
sessions at site. Additional travel cost will need
to be added to perform additional Site training.
For the LTSA, we considered onsite training
meeting minimum requirements, as per bid
section 019500, part 103.
6/25/2026 Acknowledged Y
38
General App B - Technical
Specification, G1.2.1, J1
Will Wartsila provide any civil technical
advisory?
6/19/2026
A Civil Chief Project Engineer will be involved in
the design of Wärtsilä's Scope of Supply, Civil
Technical Advisory can be provided while at site
but will consume days from other deciplines.
6/25/2026 Acknowledged Y
39
General W50DF maintenance
schedule
Per provided schedule, it appears a major
overhaul occurs at 36,000 hrs of operation.
What is the expected duration of this overhaul?
6/19/2026
Roughly 30 days with an exchange set of parts
and working one shitf.
Roughly 45 days without an exchange set and
working one shift.
This is rough estimate only. It can be less days
with 2 shifts but also depends on number of
people .
6/25/2026 Included on agenda for discussion on 7/7 Y
40
General W50DF maintenance
schedule
Are the parts required for all maintenance and
overhaul activities available in the US?
6/19/2026
As part of an LTSA, through maintenance
planning we ensured that parts are available
when needed for planned maintenance. Our
main warehouse is located in Netherlands, but
we do hold inventory in Houston as well.
6/25/2026 Acknowledged Y
41 General W50DF maintenance
schedule
Are contractors for all maintenance and
overhaul activities available in the US?6/19/2026
Yes, our field service resources are available in
the US.6/25/2026 Acknowledged Y
Page 4 of 4
39
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF
PROPOSER: Everllence
# Discipline
Specification
Reference/Proposal
Reference
Question Question
Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
1 Mechanical App II Technical
Specs/C-2520
Appendix 2
Please confirm that the following specifications are
the same for gas and oil operation:
Lube Oil Consumption: 1.64 gal/hr
6/12/2026 confirmed 6/23/2026 Acknowledged Y
2 Mechanical App II, Section 4.1,
Items 030.120.040
and 060.005.010
Annex 9
The intake air and exhaust gas silencer are listed
as optional per App 2. An adder cost of $455,351
EUR was provided for the exhaust gas silencer.
Does this adder also include the intake air silencer?
If no, please provide the cost adder for the intake
air silencer.
6/12/2026 It does not incluse the Intake Air Silencer. The optional cost is
1,179,119.00 euros
6/23/2026 $1,418,020.30 Acknowledged Y
3 Commercial Cover Letter, Price
Form
Cover letter states that the prices do not include
any taxes, but the notes in the submitted form
states that a 7% tax was included in the base bid
cost. Please confirm whether base bid cost
includes tax.
6/12/2026 The cover letter is correct. Our price does not include the 7% Iowa Sales
Tax. Applicable Iowa sales tax on taxable Work shall be charged
separately by Supplier to Owner and itemized on Supplier’s invoices in
accordance with applicable laws as indicated in Clause 5.2 of the
provided Agreement.
6/23/2026 Acknowledged Y
4 Structural App III, Item
130.030
Please clarify if exhaust gas stack steel support
structure is included in item 130.030.910.
6/12/2026 The steel support structure for the exhaust gas stack is included in the
EVR bid (130.030.910).
6/23/2026 Acknowledged Y
5 Mechanical Price Form Please confirm the cost provided for 'Spare Parts
for 2 years operation and maintenance' of
1,492,536 EUR is not included in the base
equipment cost of 74,297,246 USD.
6/12/2026 Confirmed. Costs are not included in the base bid. 6/23/2026 Acknowledged Y
6 Commercial Price Form No cost was provided for 'Freight, DDP Station'.
Please provide an estimated cost for this to allow
for a complete bid evaluation. It is understood that
this cost could vary at time of shipment.
6/12/2026 The cost estimate includes transportation of the engines and alternators
to the foundation (unloaded), as well as delivery of the equipment to the
site (not unloaded). The difference between DAP/DPU and DDP mainly
relates to applicable tariffs, which depend on the rates in effect at the
time of import.
6/23/2026 Please confirm that Everllence will cover all tariff costs
associated with DDP at the time of import as part of the
base.
Per cover letter page 4, the shipping costs are indictive
and non-binding-please confirm that these costs are
covered in the base bid.
Y Per 7/15 interview, COA would
pay all tariff and shipping costs.
Costs are not co
7 Mechanical Price Form No costs were provided for the Lube Oil Bulk
Storage tanks; however, the lube oil transfer pumps
and lube oil supply pumps are being provided as
part of the base scope. Please provide the cost
breakout for lube oil pumps included in the base
scope. Additionally, please confirm if an option can
be provided to furnish the Lube Oil Bulk Storage
tanks.
6/12/2026 According to the design philosophy, the EPC/construction company
supplies the tanks.
6/23/2026 Acknowledged Y
8 Mechanical Price Form No costs were provided for the Reagent Bulk
Storage tank; however, the forwarding pump
system is being provided as part of the base scope.
Please provide a breakout cost of the pump
forwarding system that is included in the base
scope.
6/12/2026 At this stage, we regret to inform you that we are unable to offer tanks.
060.105.020 Pump Module for Reduction Agent: 83,204 €
6/23/2026 Acknowledged Y
9 General/Commerci
al
Price Form Estimated cost for the 5 year LTSA is significantly
higher than for the 2 year LTSA. Please explain this
large price difference. Please also confirm if the
cost includes spares or if this spare components
would be paid for separately by Owner.
6/12/2026
According to assumptions engines will run around 2,350 RH per year and
auxiliaries on warm stand-by (continuous operation). With such
assumptions, within first two(2) years of the plant operation, engines are
not reaching 6,000 RH which is the first main maintenance interval to
take place. Within five(5) years engines are reaching up 11,750 RH per
engine including main intervals which is 6000 RH. LTSA amount also
includes auxilliaries (Balance of Plant scope provided by Everllence).
LTSA includes spare parts and service for all planned maintenance
events.
6/23/2026 Acknowledged Y
10 Mechanical Price Form No costs were provided for the 'Aux Side
Ventilation Units'. Please confirm if an option to
supply these units can be provided. In S&L's
experience, having an OEM furnish the Aux Side
Ventilation Units and support platform for both the
ventilation units and the charge air units simplifies
the design coordination efforts and helps reduce
errors.
6/12/2026 Design, capacity, and positioning of "Aux side ventilation units" is highly
affected by main ventilation concept and design, linked to the final engine
hall dimensions and design.
With this, an overall CFD study shall be executed to maintain the required
temperature levels inside the power house.
Therefore, a split scope of supply is not beneficial for the project in EVR
point of view.
6/23/2026 Acknowledged Y
11 Commercial Price Form All cost adders were provided in EUR. A conversion
rate of 1.20261 was used to convert to USD for
evaluation. Please confirm this is the correct rate to
use or provide pricing in USD with adjusted
conversion rate.
6/12/2026 Confirmed 6/23/2026 Acknowledged Y
12 Mechanical Appendix II Tech
Spec
Please confirm if lube oil pumps provided will be
skid mounted with appropriate isolation to switch
between pumps. If not provided, please provide
scope adjustment to include skid mounted
components for isolation and instrumentation
required for operation of lube oil pumps.
6/12/2026 Please refer to line item 6 in "Except Clar" sheet 6/23/2026 Acknowledged, not skid mounted Y
Page 1 of 6
40
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF
PROPOSER: Everllence
# Discipline
Specification
Reference/Proposal
Reference
Question Question
Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
13 Mechanical Section 011900,
Table 106.1
For LTSA operating hours per year, Owner
estimates the following based on Section 011900,
Table 106.1:
Gas Operation - 2000 hrs
Fuel Oil Operation - 350 hrs
Please confirm LTSA pricing is based on assuming
hours of operation on each fuel.
6/12/2026
Confirm running hours assumptions are correct: Gas annual Operation
85% and Fuel Oil 15% running hours:
Gas Operation: 2,000 RH per year
Fuel Oil Operation: 350 RH per year
6/23/2026 Acknowledged Y
14 Mechanical Price Form If a 5 year LTSA is selected, would the validity of
the warranty be extended to 5 years?
6/12/2026
LTSA warranty is separate from any warranties under equipment supply
contract. Once LTSA is effective, the LTSA warranty will be 18 months,
from delivery of spares parts or completion date of Service . Also12
months after repair or replacement with a maximum cumulative warranty
of 24 months from the original delivery date. .
6/23/2026 What is the cost for extending the warranties under the
equipment supply contract?
15 Commercial Price Form Proposal indicates pricing in EURs is firm but the
costs will be adjusted for USD at time of
award/contract signing. Please confirm if costs
provided in USD can remain firm through bid
validity date of July 31st, 2026.
6/12/2026 The prices indicated in USD in the cover letter are for informational
purposes only. The final USD price would be determined shortly before
Agreement signature, according to the forward rates applicable then in
the financial markets, in close coordination with City of Ames, on a
banking day when banks are open for business in Copenhagen and
Augsburg. At that time, the price would be fixed in USD for a period of 3
years, as per Appendix I of the Agreement, and payable as agreed in the
Agreement.
6/23/2026 Acknowledged Y
16 Mechanical General
Arrangement
Please see attached GA. Fuel Oil pumps are
currently planned to be located next to fuel oil tanks
and not adjacent to the unloading plan by the
engine hall. Please confirm pumps quoted can
accommodate the anticipated location for this
equipment.
6/12/2026 confirmed 6/23/2026 Acknowledged Y
17 Electrical Appendix A Scope
of Supply/Appendix
III Division of Work
Please provided cost adder to emergency diesel
generator. It is recommended this unit be furnished
by OEM due to complexity with coordinating with
OEM provided electrical system.
6/12/2026 Everllence will provide a concept describing the required control and
interfacing approach. However, please note that the Emergency Diesel
Generator is not included within Everllence's scope of supply and
responsibility.
6/23/2026 Per item 16 of the filled out bid form, EVR states that
the Emergency Diesel Generator could be provided. A
black start capable design is required as well as a
diesel generator sized appropriately. Confirm EVR is
providing.
Y Per 7/15 interview, EVR is not
able to provide a quotation for
the black start diesel generator
at this time
18 Mechanical Appendix A Scope
of Supply/Appendix
III Division of Work
Please provide cost adder to furnish fuel gas
emergency shutdown and vent valves.
6/12/2026 please refer to line item 30 in "Except Clar" sheet 6/23/2026 Acknowledged, not providing Y
19 Mechanical Appendix A Scope
of Supply/Appendix
III Division of Work
Please provide cost adjustment to furnish mobile
lube oil pumps.
6/12/2026 Mobile transfer pumps are not considered in EVR design.
The EVR standard includes one permanently installed pump with the
same design as the LO supply pump. It is located between the engine
and the maintenance tank. The pump drains and refills specific engines
via a diverter valve as part of the plant piping.
6/23/2026 Acknowledged Y
20
Mechanical Appendix 2
Performance
requirements
Please provide guaranteed values for requested
parameters.
6/12/2026 Guarantee values are part of Appendix 2: EVR's Technical Specification.
Section '1.2 Performance data'
6/23/2026 Acknowledged Y
21 Instrumentation
and Control
Appendix II Tech
Spec
Please provide product datasheet of SaCoS engine
control system.
6/12/2026 SaCoS One brochure is attached 6/23/2026 Acknowledged Y
22
General/Commerci
al
Price Form Please provide description of recommended LTSA
based on Section 019500 of document C-2520 -
RICE Spec_R0.
6/12/2026
Please refer to LTSA for 5 Years attached
6/23/2026 Acknowledged Y
23
General/Commerci
al
Price Form/
Appendix II Tech
Spec
Please provide operations and maintenance
trainings per Section 019500 of document C-2520 -
RICE Spec_R0. 6/12/2026
- Price for the training as listed in 2026 net Euro 269,500.00. We expect
a price increase of about 3% per year.
- Included: 2×10 ‑day Operations & Maintenance training courses
covering engine operation, maintenance, safety procedures, and
dual‑fuel technology (incl. control system basics); plus 2×5 ‑day on‑site
courses covering operator training, engine automation, normal operation,
start/stop procedures, troubleshooting, and data monitoring; training
delivered via theoretical and practical sessions (simulators/engines in
Augsburg), training materials and certificates included.
- The electrical training has yet to be consulted with subsuppliers.
6/26/2026 To be discussed in 7/15 meeting Y Offered training discussed in
7/15 meeting and deemed
acceptable
24 Mechanical Appendix II Tech
Spec
Please provide recommended maintenance
schedule for engine/genset. 6/12/2026 51/60DF Engine Maintenance Schedule Attached
6/23/2026 Acknowledged Y
25
Commercial/Gener
al
Price
Form/Appendix II
Tech Spec
Please provide option for blackstart testing of
gensets. 6/12/2026
We regret to inform you that we are unable to provide this option at this
time.
6/23/2026 To be discussed in 7/15 meeting Y Per 7/15 interview, EVR is not
able to provide a quotation for
the black start diesel generator
at this time
26 Electrical Annex 7 - LVM
Tech Spec
Preference is for a LV SWGR, Everllence to
provide 6/16/2026
LV SWGR confirmed 6/23/2026 Acknowledged Y
Page 2 of 6
41
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF
PROPOSER: Everllence
# Discipline
Specification
Reference/Proposal
Reference
Question Question
Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
27 Electrical Annex 7 - LVM
Tech Spec
Everllence to confirm breakers are provided for
incoming RAT feed as shown on Preliminary Single
Line Diagram as well as tie breaker for isolation of
an essential services bus as well as a tie breaker
for future connection.
6/16/2026
Based on the submitted preliminary SLD, Everllence can provide, at
additional cost:
- one incoming circuit breaker for the Reserve Auxiliary Transformer
(RAT) supply;
- one tie/bus-coupler breaker for isolation of the essential services bus
section;
- one tie breaker provision for future connection.
The current offer is based on a single 480 V LV busbar arrangement. Any
arrangement requiring separate bus sections, essential-services bus
segregation, or bus-coupler functionality is not included in the present
scope and can be offered upon request.
7/1/2026 Please provide cost adder for this.
28
Electrical Annex 7 - LVM
Tech Spec
Document states black start is excluded. This is
unacceptable. Everllence to provide.
6/16/2026
The startup of the islanded house-load operation following a grid blackout
is included and will be provided by the dedicated black-start diesel
generator connected to the LV Main Distribution.
The exclusion stated in the specification refers only to the black start of
the utility grid. Black start of the utility grid remains excluded from
Everllence's scope of supply.
If line charging of the step-up transformers is required, further information
will be needed.
6/23/2026 To be discussed in 7/15 meeting Y Per 7/15 interview, EVR is not
able to provide a quotation for
the black start diesel generator
at this time
29
Electrical Annex 7 - ACDP This document is for a panel to supply lighting. This
is not required. Lighting design will be done by
detailed design Engineer. Lighting panels will be
supplied by GWC. Unless this is a panel to supply
lighting supplied by Everllence, eliminate from
scope.
6/16/2026
The ACDP supply AC 120 V to all Everllence supplied panels for air
condition, panel illumination and power outlets inside them.
6/23/2026 Acknowledged Y
30
Electrical Annex 7 - CCP Everllence to provide top entry panels.
6/16/2026
Top entry cannot be offered. Everllence's standard design is based on
Rittal cabinets, which are not designed for top cable entry. Cable
installation is carried out via the plinth using bottom cable entry.
6/23/2026 Noted Y
31
Electrical Annex 7 - CAP Everllence to provide top entry panels.
6/16/2026
Top entry cannot be offered. Everllence's standard design is based on
Rittal cabinets, which are not designed for top cable entry. Cable
installation is carried out via the plinth using bottom cable entry.
6/23/2026 Noted Y
32 Electrical Annex 7 - MCC Everllence to provide top 6/16/2026 Top entry is confirmed. 6/23/2026 Noted Y
33
Electrical Annex 7 - MCC Everllence to clarify what loads would be controlled
via MCC that would necessitate a Profibus
connection
6/16/2026
The MCC is used for power distribution and motor feeder functions only.
All control functions are performed via the associated Interface Panel
(IP), which serves as the communication and signal interface to the MCC.
PROFIBUS is not part of Everllence's current project standards.
PROFINET is used instead.
6/23/2026 Clarify what signals will be transmitted via PROFINET
from the MCC
34
Electrical Annex 7 - CAPP Clarify scope, not required if Everllence is not
supplying a pumphouse
6/16/2026
Pump House is not part of Everllence Scope. Nevertheless, considering
the multiple interfaces with the control system (CCP), Everllence
recommends that the CAPP-IP be supplied by Everllence to ensure clear
responsibility for integration and effective interface management.
6/23/2026 Noted Y
35 Electrical Annex 7 - CAPP
MCC
Clarify scope, not required if Everllence is not
supplying a pumphouse 6/16/2026
Pump House is not part of Everllence Scope, CAPP will be removed from
the scope
6/23/2026 Noted Y
36
Electrical Annex 7 - GCP Everllence to provide top entry panels.
6/16/2026
Top entry cannot be offered. Everllence's standard design is based on
Rittal cabinets, which are not designed for top cable entry. Cable
installation is carried out via the plinth using bottom cable entry.
6/23/2026 Noted Y
37 Electrical Annex 7 - GCP Everllence to provide SEL protective relays 6/16/2026 SEL generator protection relay is confirmed. 6/23/2026 Noted Y
38
Electrical Annex 7 - ERP-IP Everllence to provide top entry panels.
6/16/2026
Top entry cannot be offered. Everllence's standard design is based on
Rittal cabinets, which are not designed for top cable entry. Cable
installation is carried out via the plinth using bottom cable entry.
6/23/2026 Noted Y
39 Electrical Annex 7 - ERP-
MCC
Everllence to provide top entry panels.
6/16/2026
Top entry is confirmed. 6/23/2026 Noted Y
Page 3 of 6
42
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF
PROPOSER: Everllence
# Discipline
Specification
Reference/Proposal
Reference
Question Question
Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
40
Mechanical Proposal Form Everllence noted for the Cooling Systems that 'most
piping inside PowerHouse is included. Some piping
outside Powerhouse is not included in base bid.'
Can you please elaborate on what piping inside the
PowerHouse is included? Is there piping inside the
PowerHouse for other systems that is also included
in the base bid?
6/19/2026
part of our offer is a 'large module design' containing most of the process
piping inside power house. Part of the design is also a 'Media Hub Skid'
containing the relevant process header lines (besides cooling water and
natural gas).
Result is, that most of the piping inside power house is already covered
with these modules.
They are located on the floor and build the lower level (1) of the service
platform inside power house.
Piping not covered by this design is interconnecting piping between the 3
service platform levels (1-3) and connection to the header lines at 1st
engine.
Addtionally, for this piping not delivered by EVR, detail design will be
carried out and MTO and isometric drawings will be forwarded.
Cooling water piping is not part of these modules due to concept and
sizing. Design Interface is at the power house wall.
responsibility of interconnecting line from PH wall to radiator field could
be discussed and agreed
6/23/2026 Acknowledged Y
41
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.2
Please confirm that the net electrical output @
100% full load (excluding BOP loads by others)
would be 17,458 kW for NG and 17,369 kW for
LFO. This is gross output minus aux power
consumption. It is preferred for this to be
guaranteed, but OK if it cannot be guaranteed. 6/19/2026
Confirmed 6/23/2026 Acknowledged Y
42
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.7 Please provide as a net heat rate. Preferred if this
can be guaranteed. 6/19/2026
We have provided a gross heat rate as Everllence has not the complete
scope of the power plant. But we can agreed to guarantee the
Consumption of EVR's scope. See Apendix II, Annex 8.
6/23/2026 Acknowledged Y
43
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.4
Please provide aux power consumption at 0% load
(standby) 6/19/2026
standby operating conditons shall be defined first: different operating
philosophies and ambient conditions will lead to different values.
When stopping the plant with standby request and the temperature inside
the engine hall is at around 20C (68F), the average standby consumption
is approx. 330kW per engine.
Main consumers are the LO and HT cooling water preheater to maintain
the required media temperature to allow for start
6/23/2026 EVR to indicate on load list which loads require standby
power.
44
Mechanical App 2 - Technical
Specifications
9.1.4
Please provide the lube oil pressure and
temperature requirements at the interface of your
system. 6/19/2026
working temperature shall be >=20C(68F), working pressure is
hydrostatic linked to filling level of tank.
Please also refer to submitted PFDs
6/23/2026 Acknowledged Y
45
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.6 Please confirm these provided fuel flow rates are
provided on a per engine basis 6/19/2026
confirmed.
Values have to be corrected, there was a typo:
Gas: instead of 6562 --> 6431
Diesel: instead of 7756 --> 7601
6/23/2026 Acknowledged Y
46
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
f.1.12 Please confirm reagent flow rates are provided on
a per engine basis 6/19/2026
confirmed 6/23/2026 Acknowledged Y
47
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.11 Please confirm lube oil consumption rates are
provided on a per engine basis 6/19/2026
confirmed 6/23/2026 Acknowledged Y
48
Mechanical C-2520 - Appendix
2 Performance
Requirements, item
d.13 / Annex 9
Please provide sound level of exhaust gas duct.
This is not currently provided in Annex 9 6/19/2026
could be included in next revision 6/23/2026 Please provide. Y Provided
49
Mechanical Annex 9
Please confirm if the provided sound level of the
intake air opening (106 dBA) includes the sound
attenuation. i.e, is 106 dBA what the final sound
level will be after the 45 dBA of attenuation? 6/19/2026
confirmed 6/23/2026 Acknowledged Y
Page 4 of 6
43
City of Ames
Ames Municipal Energy Center
Project No. 15790.002
RICE Specification
Questions to Proposer Specification: C-2520
Issue: For Proposal
Rev. 0
Date: 03-13-2026
NAME OF
PROPOSER: Everllence
# Discipline
Specification
Reference/Proposal
Reference
Question Question
Date Proposer Response Response
Date Cost Impact Owner Response Acceptable? Proposer Response
50
Mechanical Annex 9
Please confirm if the provided sound level of the
exhaust gas (97 dBA) includes the sound
attenuation. i.e, is 97 dBA what the final sound
level will be after the 42 dBA of attenuation? 6/19/2026
confirmed 6/23/2026 Acknowledged Y
51
General Appendix X -
EngDocsSubmittalL
ist
Please confirm that the EDSL will include:
'-Master Document List (updated monthly)
submitted 30 days after CD
'-Project Schedule (updated monthly) submitted 30
days after CD
'-Monthly progress reports
'-O&M Training Program and Training Manuals 90
days after CD
'-Quality Assurance / Control Procedures 90 days
after CD 6/19/2026
EVR's EDSL does not include project management reports.
-It is possible to provide the status of the documents in EDSL on a
monthly basis.
-Project Schedule (updated monthly) submitted 30 days after CD:
confirmed
-Monthly progress reports: confirmed
-O&M Training Program and Training Manuals 90 days after CD: If the
training is part of the contract, is possible to provide the standard the
training plan and the training material based on the standard training
Everllence offer. Plant specific details and specific customer requests can
not be included at this early stage.
-Quality Assurance / Control Procedures 90 days after CD: confirmed
6/26/2026
52
Mechanical App 2 - Technical
Specifications
4.2 Please confirm that Everllence is not providing the
Fuel Oil Forwarding Pumps described in Spec
Section 481127 101.8. The fuel oil forwarding
pumps are intended to forward oil from the owner's
fuel oil storage tank to the vendors fuel oil module.
The only fuel oil pumps described are on the Diesel
Oil Supply Pump Module, and these do not appear
to accomplish this function. 6/19/2026
Please see answer to item 16 and also submitted PFDs.
Offered supply pumps accomplish this function.
Main issue is the outdoor installation.
A shelter may also be sufficient as a weather protection. Could be
discussed
6/23/2026 Acknowledged, pumps included Y
53
Mechanical App 2 - Technical
Specifications
4.2 Please confirm for the fuel gas system that
Everllence will provide pressure trim / regulating for
fuel gas to each engine and any required piping /
valves for the system will be skid mounted. 6/19/2026
For skid mounted valves part of the control line please refer to submitted
PFDs.
Gas control line with described function will be delivered for each engine
separately.
6/23/2026 Acknowledged Y
54
Mechanical App 2 - Technical
Specifications
4.2
Please confirm the lube oil system will contain oil
mist coalescer units for mist separator vent pipe for
each engine 6/19/2026
Please refer to submitted PFDs.
Oil mist eliminator is part of our offer. It contains the coalescer and a fan,
to send extracted air from crankcase to the intake air system
6/23/2026 Acknowledged Y
55
Mechanical App 2 - Technical
Specifications
4.2
Please confirm that on-skid piping and valves for
the starting air, control air, and atomisation air
systems are included. 6/19/2026
Confirmed, for the single modules.
No skid for the entire system available
6/23/2026 Acknowledged Y
56 Mechanical -
57
Mechanical App 2 - Technical
Specifications
4.2
Please confirm that the intake air system includes
an air heater, ducting downstream of the
turbocharger, and a platform for accessing the
system 6/19/2026
Confirmed.
The air heater is not required for engine function; however, the filter
section must be protected against freezing. An IR panel could also be the
chosen solution later on.
6/23/2026 To be discussed in 7/15 meeting
Y
Discussed in 7/15 meeting and
acceptable
58
Mechanical Annex 9 It appears the option for the additional exhaust gas
silencer only attenuates the sound by 1 dBA.
Please confirm. 6/19/2026
Correct.
The main function of this additional (resonator) silencer is to reduce low-
frequency noise, not the total sum value.
6/23/2026 Acknowledged Y
59
Mechanical Annex 9 It appears the option for the additional intake air
silencer attenuates the overall sound by 0 dBA.
Please confirm. 6/19/2026
Correct.
The main function of this additional (resonator) silencer is to reduce low-
frequency noise, not the total sum value.
6/23/2026 Acknowledged Y
60
Mechanical App 2 - Technical
Specifications
4.2
Please confirm that all exhaust gas ducting,
including outside of the engine hall, is included 6/19/2026
Confirmed 6/23/2026 Acknowledged Y
61
General Cover Letter,
Proposal Form,
Draft Project
Schedule There seem to be discrepancies in the equipment
delivery date. Please confirm what the DPU
delivery date is for the equipment. Please clarify if
this date will be guaranteed. 6/19/2026
Everllence's proposal is based on the FCA delivery scheduled for
February 2030. At this stage, the delivery of the engines and alternators
to the DPU site (Ames, Iowa) and the remaining supply to the DAP site
(Ames, Iowa) (not unloaded) is an option. If the option is accepted, we
will of course be able to discuss this topic further at a later stage.
6/26/2026 To be discussed in 7/15 meeting Y Discussed in 7/15 interview.
Guaranteed FCA updated to
August 2029. Cannot
guarantee delivery date, but
assumed Oct-Nov 2029
62
General
Please provide a document to outline the liquidated
damages associated with project guarantees. 6/19/2026
Liquidated Damages are indicated in Clause 12 of the Equipment Supply
Agreement submitted with Everllence proposal
6/26/2026 Acknowledged Y
63
Mechanical App 2 - Technical
Specifications
4.2
Please confirm the SCR system includes Nox
analyzers, sampling umbilical, sample line
raceway, and the required steel supports. 6/19/2026
Confirmed. Besides the raceway, not part of the system. 6/23/2026 Acknowledged Y
64 Mechanical -
65
Mechanical 'Appendix V
PerformanceTestPr
ocedure
Please confirm if Everllence will perform Reagent
Injection Tuning 6/19/2026
Yes, confirmed 6/23/2026 Acknowledged Y
66
General App 2 - Technical
Specifications
8.6
Do commissioning services include commissioning
management & supervision? 6/19/2026
Yes, but only for the scope of supply of Everllence. 6/23/2026 Acknowledged Y
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