Ames Electric Services Power Plant
Natural gas power plant in Story County, Iowa. 108.8 MW of nameplate capacity across 2 generators, operated by City of Ames - (IA).
Also known as Ames Municipal Power Plant · EIA plant 1122
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Key facts
- Capacity
- 108.8 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- May 1968First generator online
- Operator
- City of Ames - (IA)EIA operator ID 554
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Story County, IA42.0258, −93.6089
- EIA plant ID
- 1122EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ames Electric Services produces
Free · EIA-923Net generation, 2025
285 GWh
284,952 MWh, final
Capacity factor, 2025
29.9%
2024: 32.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
128.9–329.5
GWh a year. Low 2019, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 363,527 | Not reported | 12 of 12 |
| 2001 | 405,648 | Not reported | 12 of 12 |
| 2002 | 425,080 | Not reported | 12 of 12 |
| 2003 | 417,670 | Not reported | 12 of 12 |
| 2004 | 411,194 | Not reported | 12 of 12 |
| 2005 | 506,131 | Not reported | 12 of 12 |
| 2006 | 459,975 | Not reported | 12 of 12 |
| 2007 | 460,023 | Not reported | 12 of 12 |
| 2008 | 448,504 | Not reported | 12 of 12 |
| 2009 | 353,773 | Not reported | 12 of 12 |
| 2010 | 348,697 | 36.6% | 12 of 12 |
| 2011 | 322,591 | 33.8% | 12 of 12 |
| 2012 | 323,246 | 33.8% | 12 of 12 |
| 2013 | 290,800 | 30.5% | 12 of 12 |
| 2014 | 283,170 | 29.7% | 12 of 12 |
| 2015 | 250,729 | 26.3% | 12 of 12 |
| 2016 | 280,735 | Not reported | 12 of 12 |
| 2017 | 281,604 | 29.5% | 12 of 12 |
| 2018 | 186,064 | 19.5% | 12 of 12 |
| 2019 | 128,924 | 13.5% | 12 of 12 |
| 2020 | 246,169 | 25.8% | 12 of 12 |
| 2021 | 257,446 | 27.0% | 12 of 12 |
| 2022 | 322,424 | 33.8% | 12 of 12 |
| 2023 | 329,465 | 34.6% | 12 of 12 |
| 2024 | 305,566 | 32.0% | 12 of 12 |
| 2025 | 284,952 | 29.9% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
235,503
US short tons. 2024: 259,241
SO₂, 2025
25
US short tons
NOx, 2025
269
US short tons
CO₂ per MWh, calculated
0.83 t
About 1,653 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (7, 8), matched to EIA plant 1122 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
188
million gallons
Consumption, 2024
182
million gallons
Source
Wells - Ames Alluvial Aquifer
Ground, Fresh. Induced-draft tower
Watershed stress
Low · 0.252
USGS SUI, HUC12 City of Ames-South Skunk River
24 of 24 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 7 | Natural Gas Steam Turbine | 37.5 | May 1968 |
| 8 | Natural Gas Steam Turbine | 71.3 | June 1982 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Ames - (IA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Ames Electric Services
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Questions about Ames Electric Services
How much power does Ames Electric Services Power Plant produce?
Ames Electric Services Power Plant reported 284,952 MWh (285 GWh) of net generation in 2025, a 29.9% capacity factor on 108.8 MW of nameplate capacity.
Where is Ames Electric Services Power Plant?
Ames Electric Services Power Plant is in Story County, Iowa, at 42.0258, −93.6089. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Ames Electric Services Power Plant?
EIA-860M for August 2026 lists City of Ames - (IA) as the operator (EIA operator ID 554). The operator is not always the owner.
When did Ames Electric Services Power Plant start operating?
Its first generator began operating in May 1968, according to EIA-860M.
Does InfraMap have power prices for Ames Electric Services Power Plant?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Ames Electric Services Power Plant, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page