Pomeroy Wind Farm
Wind power plant in Pocahontas County, Iowa. 286.4 MW of nameplate capacity across 4 generators, operated by MidAmerican Energy Co.
Also known as Pomeroy I · Pomeroy II · Pomeroy III · Pomeroy (expansion) · EIA plant 56501
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 286.4 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- December 2007First generator online
- Operator
- MidAmerican Energy CoEIA operator ID 12341
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Pocahontas County, IA42.5842, −94.7467
- EIA plant ID
- 56501EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Pomeroy Wind Farm produces
Free · EIA-923Net generation, 2025
1.00 TWh
1,003,340 MWh, final
Capacity factor, 2025
40.0%
2024: 38.0%
January to July 2026
578 GWh
Provisional
Range, 2015 to 2025
0.7–1.1
TWh a year. Low 2018, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | 15,191 | Not reported | 12 of 12 |
| 2008 | 620,805 | Not reported | 12 of 12 |
| 2009 | 692,914 | Not reported | 12 of 12 |
| 2010 | 748,777 | 33.3% | 12 of 12 |
| 2011 | 804,396 | Not reported | 12 of 12 |
| 2012 | 932,204 | 37.1% | 12 of 12 |
| 2013 | 918,970 | 36.6% | 12 of 12 |
| 2014 | 935,484 | 37.3% | 12 of 12 |
| 2015 | 886,983 | 35.4% | 12 of 12 |
| 2016 | 886,488 | 35.2% | 12 of 12 |
| 2017 | 845,511 | 33.7% | 12 of 12 |
| 2018 | 711,268 | 28.4% | 12 of 12 |
| 2019 | 714,450 | Not reported | 12 of 12 |
| 2020 | 917,215 | 36.5% | 12 of 12 |
| 2021 | 940,299 | 37.5% | 12 of 12 |
| 2022 | 1,139,177 | 45.4% | 12 of 12 |
| 2023 | 964,051 | 38.4% | 12 of 12 |
| 2024 | 955,481 | 38.0% | 12 of 12 |
| 2025 | 1,003,340 | 40.0% | 12 of 12 |
| 2026 (provisional, partial year) | 578,277 | 39.7% | 7 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 CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| PWF | Onshore Wind Turbine | 123.0 | December 2007 |
| PWF2 | Onshore Wind Turbine | 75.0 | December 2007 |
| PWF3 | Onshore Wind Turbine | 58.5 | December 2008 |
| PWF4 | Onshore Wind Turbine | 29.9 | August 2011 |
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 MidAmerican Energy Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Pomeroy Wind Farm
More plants operated by MidAmerican Energy Co
Questions about Pomeroy Wind Farm
How much power does Pomeroy Wind Farm produce?
Pomeroy Wind Farm reported 1,003,340 MWh (1.00 TWh) of net generation in 2025, a 40.0% capacity factor on 286.4 MW of nameplate capacity. From January to July 2026 it reported 578 GWh, which is provisional.
Where is Pomeroy Wind Farm?
Pomeroy Wind Farm is in Pocahontas County, Iowa, at 42.5842, −94.7467. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Pomeroy Wind Farm?
EIA-860M for August 2026 lists MidAmerican Energy Co as the operator (EIA operator ID 12341). The operator is not always the owner.
When did Pomeroy Wind Farm start operating?
Its first generator began operating in December 2007, according to EIA-860M.
Does InfraMap have power prices for Pomeroy Wind Farm?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Pomeroy Wind Farm, 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)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Project names from the USGS U.S. Wind Turbine Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page