Adair Wind Farm
Adair County, Iowa · EIA plant ID 56810 · Operator: MidAmerican Energy Co
Nameplate175MWSummer 175 MW
Generators1in service
Net generation551GWh12 mo to Dec 2025
Capacity factor36%wind units, summer MW
Heat rate—thermal plants only
First online2008
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), wind units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2008 | 18.7 | 14.4% | — |
| 2009 | 438.1 | 28.6% | — |
| 2010 | 497.4 | 32.5% | — |
| 2011 | 531.1 | 34.7% | — |
| 2012 | 538.9 | 35.1% | — |
| 2013 | 523.2 | 34.2% | — |
| 2014 | 490.3 | 32.0% | — |
| 2015 | 470.4 | 30.7% | — |
| 2016 | 485.6 | 31.6% | — |
| 2017 | 471.9 | 30.8% | — |
| 2018 | 414.2 | 27.1% | — |
| 2019 | 393 | 25.7% | — |
| 2020 | 487.8 | 31.8% | — |
| 2021 | 494.4 | 32.3% | — |
| 2022 | 593.1 | 38.7% | — |
| 2023 | 518 | 33.8% | — |
| 2024 | 554.8 | 36.1% | — |
| 2025 | 551.2 | 36.0% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| AWF | Onshore Wind Turbine | WT | 174.8 | 174.8 | Dec 2008 | Operating | — | siemens SWT-2.3-93 |
Owner / operator
Operator: MidAmerican Energy Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| MidAmerican Energy Co | 100.0% | 175 MW |
Nearby plants
Within 80 km.
| Morning Light Wind Farm | 111 MW | 8.2 km |
| Anita | 3 MW | 8.8 km |
| Green Energy Machine | 2 MW | 9.3 km |
| Roseman | 2 MW | 9.4 km |
| Fontanelle | 2 MW | 12.3 km |
| Eclipse Wind Farm | 207 MW | 14.7 km |