Johnson County Hills Solar
Johnson County, Iowa · EIA plant ID 64985 · Operator: MidAmerican Energy Co
Nameplate3MWSummer 3 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor22%solar units, summer MW
Heat rate—thermal plants only
First online2022
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), solar 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) |
|---|---|---|---|
| 2022 | 5.4 | 20.6% | — |
| 2023 | 5.9 | 22.5% | — |
| 2024 | 5.6 | 21.2% | — |
| 2025 | 5.7 | 21.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| JCHS | Solar Photovoltaic | PV | 3 | 3 | Jan 2022 | Operating | — | coming soon |
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% | 3 MW |
Nearby plants
Within 80 km.
| University of Iowa Main Power Plant | 41 MW | 9.4 km |
| Coralville GT | 72 MW | 11.2 km |
| Oakdale Renewable Energy Plant | 3 MW | 15.6 km |
| Farmers Electric Cooperative - Kalona | 6 MW | 16.1 km |
| West Liberty | 14 MW | 23.2 km |
| Amana Society Service Company | 22 MW | 38 km |