Portage Industrial Battery
Battery storage power plant · Columbia County, Wisconsin
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Wisconsin Power & Light Co
- County
- Columbia County
- Generating units
- 1
- Share of state capacity
- 0.03%
- Rank among battery storage plants in Wisconsin
- #4 of 5
- EIA plant code
- 65530
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| BESS1 | Batteries | 5.0 MW | 5.0 MW | 2022 | 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
| Lake Hallie | Solar | 5.0 MW |
| Ledgeview | Solar | 5.0 MW |
| Rock LakeSolar WI, LLC | Solar | 5.0 MW |
| Washington Island | Other | 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 Wisconsin power plants · What Wisconsin actually generates