Waterford 3
St. Charles County, Louisiana · EIA plant ID 4270 · Operator: Entergy Louisiana LLC
Nameplate1,200MWSummer 1,087 MW
Generators1in service
Net generation9,928GWh12 mo to Aug 2026
Capacity factor104%!nuclear units, summer MW
Heat rate—thermal plants only
First online1985
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), nuclear units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 9,535.9 | 99.6% | — |
| 2002 | 8,837.8 | 92.5% | — |
| 2003 | 8,485 | 88.9% | — |
| 2004 | 9,653.9 | 101.1% | — |
| 2005 | 7,867.7 | 77.6% | — |
| 2006 | 9,269.9 | 91.9% | — |
| 2007 | 9,893 | 97.6% | — |
| 2008 | 9,037.1 | 87.5% | — |
| 2009 | 8,948.7 | 87.5% | — |
| 2010 | 10,276.2 | 100.4% | — |
| 2011 | 8,928.5 | 87.9% | — |
| 2012 | 7,854 | 77.1% | — |
| 2013 | 9,367.8 | 92.5% | — |
| 2014 | 9,156.3 | 89.8% | — |
| 2015 | 8,384.7 | 82.5% | — |
| 2016 | 10,096.8 | 98.6% | — |
| 2017 | 8,377.5 | 82.1% | — |
| 2018 | 10,152.6 | 99.5% | — |
| 2019 | 7,560.4 | 74.1% | — |
| 2020 | 8,961.2 | 87.5% | — |
| 2021 | 9,806.8 | 96.1% | — |
| 2022 | 7,859 | 77.0% | — |
| 2023 | 7,820.4 | 76.7% | — |
| 2024 | 6,162.3 | 65.2% | — |
| 2025 | 8,461.8 | 88.9% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 3 | Nuclear | ST | 1,199.8 | 1,086.9 | Sep 1985 | Operating | — | coming soon |
Owner / operator
Operator: Entergy Louisiana LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Entergy Louisiana LLC | 100.0% | 1,200 MW |
Nearby plants
Within 80 km.
| Waterford 1 & 2 | 487 MW | 0.6 km |
| Taft Cogeneration Facility | 894 MW | 1.3 km |
| Little Gypsy | 1,003 MW | 1.4 km |
| Waterford 5 | — | 1.5 km |
| Waterford 6 | — | 1.5 km |
| St. Charles Power Station (LA) | 1,000 MW | 1.9 km |