Donald C Cook
Nuclear power plant · Berrien County, Michigan
Nameplate capacity
2,285 MW
Rank in Michigan
#2
of 289 plants
In service since
1975
August 1975
Details
- Primary fuel
- Nuclear
- Technology
- Nuclear
- Operator
- Indiana Michigan Power Co
- County
- Berrien County
- Generating units
- 2
- Share of state capacity
- 6.39%
- Rank among nuclear plants in Michigan
- #1 of 3
- EIA plant code
- 6000
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,152 MW | 1,009 MW | 1975 | Operating |
| 2 | Nuclear | 1,133 MW | 1,168 MW | 1978 | 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 |
| Ludington | Hydro | 1,979 MW |
| Midland Cogeneration Venture | Natural gas | 1,854 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 2,285 MW solar plant and a 2,285 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