Grand Gulf
Grand Gulf is a 1 GW nuclear power plant in Claiborne County, Mississippi, operated by System Energy Resources, Inc. EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 1985.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 1,440 MW
- 1,396.7 MW net summer
- Generating units
- 1
- In service
- 1985
- EIA plant ID
- 6072
Where it is
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- County
- Claiborne County, Mississippi
- Coordinates
- 32.0081, -91.0478
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- System Energy Resources, Inc
- Primary energy source
- Nuclear
- Technologies
- Nuclear
- Status
- Operating
Grand Gulf: FAQ
- Where is Grand Gulf?
- In Claiborne County, Mississippi (MS). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Grand Gulf?
- 1 GW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Grand Gulf?
- EIA-860M names System Energy Resources, Inc as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Grand Gulf LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — System Energy Resources, Inc here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Grand Gulf LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Grand Gulf still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.