Waterford 3
Nuclear power plant · St Charles County, Louisiana
Details
- Primary fuel
- Nuclear
- Technology
- Nuclear
- Operator
- Entergy Louisiana LLC
- County
- St Charles County
- Generating units
- 1
- Share of state capacity
- 4.10%
- Rank among nuclear plants in Louisiana
- #1 of 2
- EIA plant code
- 4270
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Nuclear | 1,200 MW | 1,087 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 Louisiana
| R S Nelson | Coal | 1,434 MW |
| Acadia Energy Center | Natural gas | 1,389 MW |
| Plaquemine Cogeneration Plant | Natural gas | 1,085 MW |
| River Bend | Nuclear | 1,036 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 1,200 MW solar plant and a 1,200 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 Louisiana power plants · What Louisiana actually generates