A single GE boiling-water reactor near Port Gibson, Mississippi
Grand Gulf is a single-unit nuclear station near Port Gibson, Mississippi, with 1,440 MW of current EIA nameplate capacity.
Single operating generator.
NRC reactor license basis, not electric capacity.
Answers use this researched asset profile with live MISO data. Ask about ownership, equipment, project history, or current grid context.
Live MISO public data · answers can be wrong, verify against source data or the ISO.
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Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 1,440 MW 1,396.7 MW summer | Nuclear Nuclear · ST | Jul 1985 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Project milestones and public references behind the asset profile.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Grand Gulf has a reported capacity of 1,440 MW. Source: EIA Form 860M.
Grand Gulf is a nuclear facility in Claiborne County, MS, participating in the MISO market.
Grand Gulf is in Claiborne County, MS, inside the MISO balancing area.
Grand Gulf is operated by System Energy Resources, Inc according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Grand Gulf reported 10,141.1 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
By capacity, Grand Gulf ranks #34 of 54 operating plants of the same technology nationally. It ranks #1 of 1 in MS.