Nameplate capacity
1,312 MW
Rank in Ohio
#5
of 219 plants
In service since
1987
November 1987
Details
- Primary fuel
- Nuclear
- Technology
- Nuclear
- Operator
- Energy Harbor Nuclear Generation LLC
- County
- Lake County
- Generating units
- 1
- Share of state capacity
- 3.67%
- Rank among nuclear plants in Ohio
- #1 of 2
- EIA plant code
- 6020
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,312 MW | 1,240 MW | 1987 | 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 Ohio
| Cardinal | Coal | 1,880 MW |
| Hanging Rock Energy Facility | Natural gas | 1,430 MW |
| South Field Energy | Natural gas | 1,210 MW |
| Miami Fort | Coal | 1,181 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 1,312 MW solar plant and a 1,312 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 Ohio power plants · What Ohio actually generates