Grinnell Customer Hosted Solar
Solar power plant · Poweshiek County, Iowa
Nameplate capacity
5.0 MW
Rank in Iowa
#192
of 305 plants
In service since
2025
December 2025
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Interstate Power and Light Co
- County
- Poweshiek County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among solar plants in Iowa
- #9 of 34
- EIA plant code
- 67703
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| PV1 | Solar Photovoltaic | 5.0 MW | 5.0 MW | 2025 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Iowa
| Deer Run Battery | Battery storage | 5.0 MW |
| Downtown Generation Plant | Other | 5.0 MW |
| POET Biorefining - Gowrie | Natural gas | 5.0 MW |
| POET Biorefining - Jewell | Natural gas | 5.0 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 5.0 MW solar plant and a 5.0 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Iowa power plants · What Iowa actually generates