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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 43% of Connecticut households use heating oil or other petroleum products for home heating, the fourth-highest share for any state, and 35% of households use natural gas.
  • In 2021, the Millstone nuclear power plant generated 38% of Connecticut’s electricity. The state had the sixth-highest share of electricity provided by nuclear power in the nation.
  • In 2021, Connecticut’s electric power sector used a record amount of natural gas, with natural gas fueling 55% of the state's total electricity net generation.
  • 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 California, Massachusetts, and New York.

Last Updated: October 20, 2022

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