Power plants in Union County, Iowa
4 operating power plants in Union County, Iowa, with 424 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Union County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Southern Hills Wind FarmWind | 254 | 814 | 36.6% |
| 2 | Summit LakeNatural gas | 119 | 109 | 10.5% |
| 3 | Creston Solar (50 MW)Solar | 50 | 97.0 | 22.1% |
| 4 | Creston School Customer Hosted SolarSolar | 1.4 | 1.4 | – |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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