Nameplate capacity
1,979 MW
Rank in Michigan
#3
of 289 plants
In service since
1973
January 1973
Details
- Primary fuel
- Hydro
- Technology
- Hydroelectric Pumped Storage
- Operator
- Consumers Energy Co - (MI)
- County
- Mason County
- Generating units
- 6
- Share of state capacity
- 5.54%
- Rank among hydro plants in Michigan
- #1 of 51
- EIA plant code
- 1713
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | Operating |
| 2 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | Operating |
| 3 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | Operating |
| 4 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | Operating |
| 5 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | Operating |
| 6 | Hydroelectric Pumped Storage | 330 MW | 363 MW | 1973 | 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 Michigan
| Monroe (MI) | Coal | 3,293 MW |
| Donald C Cook | Nuclear | 2,285 MW |
| Midland Cogeneration Venture | Natural gas | 1,854 MW |
| Belle River | Coal | 1,664 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 1,979 MW solar plant and a 1,979 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 Michigan power plants · What Michigan actually generates