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Connecticut   Connecticut Profile

State Profile and Energy Estimates

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Profile Overview

Quick Facts

  • One of the three storage sites that make up the 1-million-barrel Northeast Home Heating Oil Reserve, which was created to offset disruptions in heating fuel supplies, is located in Groton, Connecticut, and it holds 300,000 barrels of heating oil.
  • About 44% of Connecticut households use fuel oil or other petroleum products for home heating, the fourth-highest share for any state, and 36% of households use natural gas.
  • In 2020, the Millstone nuclear power plant generated 38% of Connecticut’s electricity. The state had the seventh-highest share of electricity provided by nuclear power in the nation.
  • Solar power provided slightly more than 2% of Connecticut's net generation in 2020 and exceeded biomass-fueled electric generation for the first time.
  • Connecticut has one of the least energy-intensive state economies and uses less energy to produce one dollar of gross domestic product (GDP) than all other states except Massachusetts, California, and New York.

Last Updated: September 16, 2021

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