Battery storage projects in Iowa
6 operating battery storage projects in Iowa with 110 MW of battery capacity, largest first. From EIA-860M, August 2026.
Largest battery storage projects in Iowa
| # | Plant | Battery MW | GWh, 2025 |
|---|---|---|---|
| 1 | Wever Solar (150MW)Lee County · Solar and battery storage | 99 | 260 |
| 2 | Deer Run BatteryLinn County | 5.0 | −0.5 |
| 3 | Decorah BatteryWinneshiek County | 2.5 | −0.1 |
| 4 | Hampton Substation Energy StorageFranklin County | 1.8 | −0.0 |
| 5 | Knoxville Battery Energy StorageMarion County | 1.1 | −0.0 |
| 6 | Marshalltown Generating StationMarshall County · Natural gas | 0.3 | 3,178 |
Every project with battery storage, solar and wind hybrids included. MW is battery nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources