Grand Gulf
Nuclear power plant · Claiborne County, Mississippi
Details
- Primary fuel
- Nuclear
- Technology
- Nuclear
- Operator
- System Energy Resources, Inc
- County
- Claiborne County
- Generating units
- 1
- Share of state capacity
- 7.95%
- Rank among nuclear plants in Mississippi
- #1 of 1
- EIA plant code
- 6072
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,440 MW | 1,397 MW | 1985 | 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 Mississippi
| Victor J Daniel Jr | Coal | 2,229 MW |
| Magnolia Power Plant | Natural gas | 1,004 MW |
| Jack Watson | Natural gas | 919 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 1,440 MW solar plant and a 1,440 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 Mississippi power plants · What Mississippi actually generates