U.S. Energy Information Administration logo
Skip to sub-navigation

As of July 1, 2022, we are continuing to restore our systems. The monthly data releases, including the Petroleum Supply Monthly, Natural Gas Monthly, and Electric Power Monthly, will be published next week. We will continue to post regular updates regarding the status of other data products.

‹ U.S. States

Connecticut   Connecticut Profile

State Profile and Energy Estimates

Visit EIA's U.S. Energy Atlas, our new interface for web map applications and geospatial data catalogue.

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

More Data & Analysis in Connecticut