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Mississippi   Mississippi Profile

State Profile and Energy Estimates

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Profile Overview

Quick Facts

  • The 1,443-megawatt Grand Gulf Nuclear Power Station in Port Gibson, Mississippi, has the largest U.S. reactor in terms of generating capacity. The plant generated about 17% of the state's electricity in 2019.
  • Mississippi's Pascagoula oil refinery is the nation's 9th-largest refinery, with a capacity to process about 356,000 barrels of oil per calendar day into motor gasoline, diesel fuel, and other petroleum products.
  • Mississippi is one of the few states with large underground salt caverns capable of storing natural gas, and the state holds almost 4% of total U.S. underground natural gas storage capacity.
  • Natural gas accounted for about 74% of Mississippi's electricity net generation in 2019 and was the primary fuel used at 9 of the state's 10 largest power plants. 
  • About 11 in 100 Mississippi households rely on propane as their main heating fuel, which is more than double the national rate.

Last Updated: July 16, 2020

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