Grand Gulf
Claiborne County, Mississippi · EIA plant ID 6072 · Operator: System Energy Resources, Inc
Nameplate1,440MWSummer 1,397 MW
Generators1in service
Net generation10,616GWh12 mo to Aug 2026
Capacity factor87%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 | 9,923.9 | 93.6% | — |
| 2002 | 10,059.5 | 93.3% | — |
| 2003 | 10,902.5 | 98.5% | — |
| 2004 | 10,232.8 | 91.7% | — |
| 2005 | 10,077.8 | 90.9% | — |
| 2006 | 10,418.6 | 93.9% | — |
| 2007 | 9,358.8 | 84.3% | — |
| 2008 | 9,396.8 | 85.0% | — |
| 2009 | 10,998.5 | 100.4% | — |
| 2010 | 9,643.2 | 88.0% | — |
| 2011 | 10,336.8 | 99.2% | — |
| 2012 | 7,296.1 | 69.8% | — |
| 2013 | 10,864.5 | 87.8% | — |
| 2014 | 10,252.2 | 83.1% | — |
| 2015 | 11,714.6 | 95.5% | — |
| 2016 | 5,897.3 | 47.9% | — |
| 2017 | 7,364.6 | 60.0% | — |
| 2018 | 6,919.5 | 56.4% | — |
| 2019 | 11,032.5 | 89.9% | — |
| 2020 | 6,470.9 | 52.6% | — |
| 2021 | 11,772.1 | 95.9% | — |
| 2022 | 8,600.3 | 70.1% | — |
| 2023 | 11,749.6 | 97.0% | — |
| 2024 | 10,653.4 | 87.2% | — |
| 2025 | 11,807.2 | 96.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Nuclear | ST | 1,440 | 1,396.7 | Jul 1985 | Operating | — | coming soon |
Owner / operator
Operator: System Energy Resources, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| System Energy Resources, Inc | 90.0% | 1,296 MW |
| Cooperative Energy | 10.0% | 144 MW |
Nearby plants
Within 80 km.
| Baxter Wilson | retired | 32.5 km |
| Vicksburg Advanced Power Station | — | 32.9 km |
| ERDC | 3 MW | 38 km |
| Ergon Refining Vicksburg | 5 MW | 44.3 km |
| SR Winnsboro | — | 61.5 km |
| International Paper Vicksburg Mill | 51 MW | 63.4 km |