Understanding Energy in Connecticut
Connecticut has the second-highest residential electricity rates in the continental US. The state operates a deregulated retail electricity market allowing consumers to shop among competitive suppliers. Eversource and United Illuminating remain the distribution utilities responsible for delivering power.
Connecticut operates a deregulated electricity market, meaning you can choose your electricity supplier and potentially save money by shopping for competitive rates. Your utility still delivers the electricity — they just don't set the supply price. Visit your state's official electricity shopping portal to compare offers.
The state's primary electric utilities include Eversource Energy (CL&P), United Illuminating (UI/Avangrid). Natural gas distribution is handled by Eversource Gas (Southern CT Gas / Connecticut Natural Gas), Yankee Gas Services. Connecticut's climate — cold winters, humid summers — is one of the main drivers of annual energy consumption patterns for households.
Electric Utilities in Connecticut
The following utilities operate in Connecticut. Your specific provider depends on your address.
- Eversource Energy (CL&P)
- United Illuminating (UI/Avangrid)
Natural Gas Utilities in Connecticut
- Eversource Gas (Southern CT Gas / Connecticut Natural Gas)
- Yankee Gas Services
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Energy Assistance Programs in Connecticut
Low-income households and those facing energy emergencies may qualify for these programs:
- Connecticut Energy Assistance Program (CEAP)
- Operation Fuel
- Connecticut Green Bank
- Home Energy Solutions (HES)
Energy Saving Tips for Connecticut Residents
These tips are tailored to Connecticut's climate — cold winters, humid summers:
- Insulate your attic to at least R-49 to reduce winter heat loss by up to 15%.
- Install a programmable thermostat and set it to 68°F while home, 60°F while sleeping or away.
- Seal air leaks around windows and doors before the heating season to cut drafts.
- Schedule an annual furnace tune-up every fall to maintain peak efficiency.
- Use heavy drapes on north-facing windows during winter to reduce cold air infiltration.
- Consider a heat pump water heater — it uses 60% less energy than standard electric heaters.
- Take advantage of Mass Save or similar state programs for free energy audits.
All Cities & Towns in Connecticut
Gas and electricity information for all 167 cities and towns in Connecticut. Jump to a letter or browse the full list.
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Frequently Asked Questions — Connecticut Energy
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The average residential electricity rate in Connecticut is approximately 27.37¢/kWh, compared to the national average of around 16¢/kWh. The average monthly electricity bill is $146.
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The average residential natural gas rate in Connecticut is approximately $1.64/therm per therm. The typical monthly gas bill is $110, though this varies significantly by season.
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The primary electric utilities serving Connecticut include Eversource Energy (CL&P), United Illuminating (UI/Avangrid). The right utility for you depends on your specific address.
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Yes — Connecticut is a deregulated electricity market, allowing you to shop for a competitive electricity supplier.
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Connecticut residents may qualify for several assistance programs including Connecticut Energy Assistance Program (CEAP), Operation Fuel. Contact your utility or the state energy office for eligibility details.
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To reduce your energy bills in Connecticut: schedule a free energy audit through your utility, check for state weatherization assistance, upgrade to LED lighting, and optimize your thermostat settings. You can also shop for a lower-cost electricity supplier.