Caldron Falls
Hydro power plant · Marinette County, Wisconsin
Nameplate capacity
6.4 MW
Rank in Wisconsin
#131
of 278 plants
In service since
2024
November 2024
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Wisconsin Public Service Corp
- County
- Marinette County
- Generating units
- 2
- Share of state capacity
- 0.03%
- Rank among hydro plants in Wisconsin
- #22 of 61
- EIA plant code
- 4061
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 3.2 MW | 3.2 MW | 2024 | Operating |
| 2 | Conventional Hydroelectric | 3.2 MW | 3.2 MW | 2024 | 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
| Port Edwards Mill | Hydro | 6.7 MW |
| Elroy | Other | 6.6 MW |
| Deertrack Park Gas Recovery | Other | 6.4 MW |
| Grantsburg Diesel | Other | 6.4 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 6.4 MW solar plant and a 6.4 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