Grand Gulf

OperatingNuclear

Ranked #1 of 1 Nuclear plants in MS#34 of 57 nationally

1440 MW Nuclear operating in Claiborne, MS — Midcontinent Independent Transmission System Operator, Inc..

EIAGEMWD

1,440 MW

Nameplate Capacity

Generators

unit

Nuclear

Technology

1985

Operating Since

Location

Coordinates

32.0081, -91.0478

County

Claiborne, MS

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	System Energy Resources, Inc	Entergy Nuclear Operations	Entergy
Owner(s)	Cooperative Energy, System Energy Resources, Inc	Systems Energy Resources Inc [100%]	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as Systems Energy Resources Inc [100%]

This entity is not yet in the GEM ownership database — chain unavailable.

About

Grand Gulf Nuclear Station is a nuclear power station with one operational GE BWR reactor. It lies on a 2,100 acres (850 ha) site near Port Gibson, Mississippi. The site is wooded and contains two lakes. The plant has a 520-foot natural draft cooling tower. As of January 2023, the plant employs 675 people.

Read more on Wikipedia

Grand Gulf Nuclear Generating Station is a 1440 MW nuclear power plant located in Claiborne County, Mississippi. The plant, which began operating in 1985, is the largest in the state and ranks 33rd nationally among nuclear facilities. It consists of a single nuclear generator and is operated by System Energy Resources, Inc. The plant's primary fuel source is nuclear (NUC).

In the most recent year with available data, Grand Gulf generated 11,492,701 MWh of electricity, achieving a capacity factor of 90.9%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. Financial data indicates an installed cost of $2879.63 per kW, based on FERC filings.

Generated from EIA, GEM, and public data sources

Wikipedia EIA Plant Profile Wikidata Global Energy Monitor

Engineering & Generators

Grid Context

NERC Region

SERC

Balancing Authority

Midcontinent Independent Transmission System Operator, Inc..

Grid Voltage

500 kV

Regulatory Status

Entity Type

Investor-Owned Utility

Sector

Electric Utility

Generation

955.6K MWh

Latest Month

11.5M MWh

Annual Generation

90.9%

Capacity Factor

Jan 2023 – Dec 2025

Financial DataBeta

Source: FERC Form 1HIGH

$3,812/kW

Installed Cost

$23.9/MWh

Operating Cost

System Energy Resources, Inc.

Reporting Utility

Annual Capital & Operating Expenses

Cumulative Installed Cost

Per-Unit Cost Trends

Pricing & Market Data

HIGH confidence

Market Position

ISO/RTO Market

MISO

LMP Node

EES.G_GULF_A

Pricing Hub

MS.HUB

Node Source

EIA-860 direct report

News & Articles (10)Beta

Industry·corporate

Get a sneak peek inside Grand Gulf Nuclear Station

Grand Gulf Nuclear Station, located in Port Gibson, Mississippi, is the only nuclear power plant in the state. For 40 years, this facility...

Grand Gulf Nuclear Station (operator)

Entergy·4 weeks ago

Regulatory·permitting

Grand Gulf’s early site permit renewal application on the docket

The Nuclear Regulatory Commission has agreed to review an early site permit (ESP) renewal application submitted by Entergy last September...

Nuclear Regulatory Commission (regulator)Entergy (operator)

American Nuclear Society -- ANS·4 weeks ago

Grid·outage

Grand Gulf begins scheduled refueling outage

Posted:Feb 16, 2026 | Posted:Tosha Hester | Category:News release | Tags:Grand Gulf Nuclear Station, Mississippi, Refueling outage. An aerial image of Grand...

Grand Gulf Nuclear Station (operator)

Entergy·4 weeks ago