Battery storage projects in Iowa
Iowa has 6 operating battery storage projects with 0.1 GW of capacity.
- Operating6
Under 50 MW50–249 MW250 MW and up
Updated monthly. Last updated November 2026.
The largest battery storage projects in Iowa
Operating, by capacity
| # | Battery storage project | Year online | Capacity |
|---|---|---|---|
| 1 | Wever Solar (150MW) | 2026 | 99 MW |
| 2 | Deer Run Battery | 2023 | 5 MW |
| 3 | Decorah Battery | 2021 | 3 MW |
| 4 | Hampton Substation Energy Storage | 2022 | 2 MW |
| 5 | Knoxville Battery Energy Storage | 2018 | 1 MW |
| 6 | Marshalltown Generating Station | 2020 | 0 MW |
Battery storage projects that came online most recently in Iowa
Newest first
| # | Battery storage project | Year online | Capacity |
|---|---|---|---|
| 1 | Wever Solar (150MW) | 2026 | 99 MW |
| 2 | Deer Run Battery | 2023 | 5 MW |
| 3 | Hampton Substation Energy Storage | 2022 | 2 MW |
| 4 | Decorah Battery | 2021 | 3 MW |
| 5 | Marshalltown Generating Station | 2020 | 0 MW |
| 6 | Knoxville Battery Energy Storage | 2018 | 1 MW |
The developer behind each project is on paid plans. See plans
How Cleanview tracks battery storage projects
Operating battery storage projects come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.
Questions about battery storage projects in Iowa
- How many battery storage projects are in Iowa?
- Iowa has 6 operating utility-scale battery storage projects with 0.1 GW of capacity, according to the EIA's monthly survey of power plants.
- What is the largest battery storage project in Iowa?
- Wever Solar (150MW) in Lee County, Iowa is the largest, at 99 MW. It came online in 2026.
- How many battery storage projects were built in Iowa in 2025?
- 0 battery storage projects came online in Iowa in 2025, with 0 MW of capacity.
- Who is developing battery storage projects in Iowa?
- Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.
More energy trackers for Iowa
Battery storage projects in other states
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