Ivester Wind Farm
Wind power plant in Grundy County, Iowa. 90.8 MW of nameplate capacity across 1 generator, operated by MidAmerican Energy Co.
Also known as Ivester · EIA plant 61911
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 90.8 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2018First generator online
- Operator
- MidAmerican Energy CoEIA operator ID 12341
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Grundy County, IA42.3333, −92.9464
- EIA plant ID
- 61911EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ivester Wind Farm produces
Free · EIA-923Net generation, 2025
328 GWh
328,083 MWh, final
Capacity factor, 2025
41.2%
2024: 42.7%
January to July 2026
194 GWh
Provisional
Range, 2019 to 2025
257.0–364.9
GWh a year. Low 2019, 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 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | 9,579 | Not reported | 1 of 12 |
| 2019 | 257,012 | 32.3% | 12 of 12 |
| 2020 | 300,749 | 37.7% | 12 of 12 |
| 2021 | 322,091 | 40.5% | 12 of 12 |
| 2022 | 364,869 | 45.9% | 12 of 12 |
| 2023 | 321,806 | 40.5% | 12 of 12 |
| 2024 | 340,736 | 42.7% | 12 of 12 |
| 2025 | 328,083 | 41.2% | 12 of 12 |
| 2026 (provisional, partial year) | 194,450 | 42.1% | 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 |
|---|---|---|---|
| WT1 | Onshore Wind Turbine | 90.8 | December 2018 |
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 Ivester Wind Farm
More plants operated by MidAmerican Energy Co
Questions about Ivester Wind Farm
How much power does Ivester Wind Farm produce?
Ivester Wind Farm reported 328,083 MWh (328 GWh) of net generation in 2025, a 41.2% capacity factor on 90.8 MW of nameplate capacity. From January to July 2026 it reported 194 GWh, which is provisional.
Where is Ivester Wind Farm?
Ivester Wind Farm is in Grundy County, Iowa, at 42.3333, −92.9464. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Ivester 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 Ivester Wind Farm start operating?
Its first generator began operating in December 2018, according to EIA-860M.
Does InfraMap have power prices for Ivester Wind Farm?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Ivester 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