Portage Solar Plant
Solar power plant · Columbia County, Wisconsin
Nameplate capacity
12 MW
Rank in Wisconsin
#99
of 278 plants
In service since
2023
June 2023
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Portage Solar Plant
- County
- Columbia County
- Generating units
- 1
- Share of state capacity
- 0.06%
- Rank among solar plants in Wisconsin
- #23 of 115
- EIA plant code
- 67597
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| PG329 | Solar Photovoltaic | 12 MW | 10 MW | 2023 | 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 Wisconsin
| Dells | Hydro | 12 MW |
| Waxdale | Other | 12 MW |
| UW Madison Charter Street Plant | Natural gas | 11 MW |
| Wind Turbine | Wind | 11 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 12 MW solar plant and a 12 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 Wisconsin power plants · What Wisconsin actually generates