Power plants in Johnson County, Iowa
4 operating power plants in Johnson County, Iowa, with 117 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Johnson County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Coralville GTNatural gas | 72 | 2.5 | 0.4% |
| 2 | University of Iowa Main Power PlantNatural gas | 39 | 0.0 | – |
| 3 | Johnson County Hills SolarSolar | 3.0 | 5.7 | 21.5% |
| 4 | Oakdale Renewable Energy PlantNatural gas | 2.8 | 0.0 | – |
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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