World Power Plants

Grand Gulf Nuclear Generating Station1,440 MW Nuclear

NuclearVerified: Mar 2026

The Grand Gulf Nuclear Generating Station is a pivotal energy generation facility located in the United States, boasting a substantial capacity of 1440 MW. Operated by Entergy, this nuclear power plant plays a vital role in providing reliable and low-carbon electricity to the regional grid. Situated at coordinates 32.0067, -91.0483, Grand Gulf is one of the largest nuclear plants in the country and significantly contributes to the energy mix of the state of Mississippi. The plant's advanced pressurized water reactor technology enables it to generate electricity efficiently while adhering to stringent safety standards. As part of the broader national energy policy, which increasingly emphasizes the reduction of carbon emissions, Grand Gulf serves as a cornerstone in the effort to transition towards cleaner energy sources without sacrificing reliability. The operational efficiency and capacity of the Grand Gulf Nuclear Generating Station make it a key asset for Entergy and the local communities it serves, ensuring that they have access to consistent power supply while supporting the United States' goals for a sustainable energy future.

Capacity
1,440 MW

1.44 GW

Commissioning Year
1982

44 years old

Owner
Entergy
Location
32.0067°, -91.0483°

United States of America, North America

Context & rankings
  • 216. largest of 10,098 plants in United States of America
  • #1,349 worldwide by installed capacity
  • #257 of 514 Nuclear plants worldwide
  • 0.1% of the installed capacity of United States of America
Age & fleet comparison

44 years in operation

Nuclear fleet average: 38.1 years

Operator portfolio

Entergy operates 9 plants totalling 7,616 MW

Regional density

6 plants within 100 km, 2,595 MW combined

Nearest plant: Baxter Wilson (32.7 km)

Data provenance

Source: Wikidata

Location

Coordinates:: 32.006700, -91.048300
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Grand Gulf Nuclear Generating Station is a nuclear power plant producing approximately 10722 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~12 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Nuclear
Energy Source
Non-Renewable
Country
United States of America
Continent
North America
Data Source
Global Power Plant Database

Overview of Grand Gulf Nuclear Generating Station

The Grand Gulf Nuclear Generating Station (GGNPS) is a significant nuclear power facility located in Port Gibson, Mississippi, United States. Owned and operated by Entergy, GGNPS has a total electrical generating capacity of 1,440 megawatts (MW), making it one of the largest nuclear power plants in the United States. The facility plays a crucial role in the energy sector of the region and contributes substantially to the overall electricity supply in the southeastern United States, particularly in the states of Mississippi and Louisiana.

As a nuclear power plant, Grand Gulf utilizes uranium as its primary fuel source. The facility employs a pressurized water reactor (PWR) design, which is a common technology in nuclear power generation. In this system, water is heated by nuclear fission reactions occurring within the reactor core, producing steam that drives turbines connected to electrical generators. The use of uranium fuel allows for a high energy density, meaning that a relatively small amount of fuel can produce a large amount of energy, contributing to the plant's high capacity.

The environmental impact of the Grand Gulf Nuclear Generating Station is generally considered to be lower than that of fossil fuel power plants. Nuclear energy generation produces minimal greenhouse gas emissions during operation, which is a significant advantage in the context of climate change and global warming. However, the plant generates radioactive waste, which must be carefully managed and stored to minimize risks to human health and the environment. Entergy follows strict regulatory guidelines to ensure the safe handling and disposal of nuclear waste, and ongoing monitoring is conducted to assess any potential environmental impacts.

Regionally, the Grand Gulf Nuclear Generating Station holds strategic significance as it helps to stabilize the local energy grid and reduce dependence on fossil fuels. The facility contributes to energy security by providing a consistent and reliable power supply, especially during peak demand periods or adverse weather conditions when other sources may be less reliable. Additionally, GGNPS supports local economies by providing jobs and contributing to tax revenues that benefit the surrounding communities.

Overall, the Grand Gulf Nuclear Generating Station is a vital component of the energy landscape in the southeastern United States. It exemplifies the role of nuclear power in contributing to a cleaner energy future while addressing the critical challenges of energy demand and environmental sustainability.

United States of AmericaEnergy Profile

10,098
Total Plants
1420.7 GW
Total Capacity
GasCoalNuclearWind
Top Fuels

See Incorrect or Missing Data?

Help us improve our database by reporting any corrections or updates. Your contribution helps keep our global power plant data accurate and up-to-date.