The average residential electricity rate in Connecticut (CT) is $0.2550 per kWh as of April 2026, according to the US Energy Information Administration (EIA). This is among the highest in the nation of $0.1805/kWh, ranking Connecticut #47 out of 51 (all 50 states plus Washington DC), where #1 is the cheapest and #51 is the most expensive. The average Connecticut household consumes 780 kWh per month, resulting in a monthly electric bill of approximately $199 and annual electricity costs of about $2,388.
Connecticut experienced the largest rate decrease year-over-year in 2025-2026 after a spike the prior year. The Millstone Nuclear Station provides nearly 40% of state electricity generation.
This comprehensive guide covers Connecticut electricity rates, historical trends, utility providers, bill calculation, solar savings potential, and actionable tips to reduce your electric bill. All rate data is sourced from the US EIA and updated monthly. Use our electricity cost calculator for personalized estimates.
Connecticut residential electricity rates have increased 21% over the past six years. The table below shows the trajectory compared against the national average.
| Year | Connecticut ($/kWh) | National Avg | Difference |
|---|---|---|---|
| 2020 | $0.2115 | $0.1322 | +60% |
| 2022 | $0.2430 | $0.1492 | +63% |
| 2024 | $0.2680 | $0.1680 | +60% |
| Apr 2026 | $0.2550 | $0.1805 | +41% |
Connecticut has a deregulated electricity market. The primary delivery utilities are: Eversource Energy, United Illuminating.
Connecticut generates electricity from: Natural gas 55%, Nuclear 38%, Solar 4%, Other 3%.
Your monthly electric bill = kWh Used × Rate per kWh. The average Connecticut household uses 780 kWh/month.
Connecticut is a deregulated state where you can choose your electricity supplier. Shopping for a competitive supply rate through CTEnergize can save 10-20% on the supply portion of your bill.
Universal strategies: adjust thermostat 2-3 degrees (saves 5-10% on HVAC), switch to LEDs (see our LED savings calculator), unplug phantom loads (saves $100-200/year), and run major appliances during off-peak hours if your utility offers time-of-use pricing. For larger investments, consider a heat pump, better insulation, or a smart thermostat.
Connecticut receives 4 peak sun hours/day. A 6 kW system produces ~7,183 kWh/year, saving ~$1,832/year. With the 30% federal ITC, payback is typically 4-6 years. Use our solar panel calculator and solar ROI calculator for personalized estimates.
| State | Rate ($/kWh) | Avg Bill | Market |
|---|---|---|---|
| Connecticut (CT) | $0.2550 | $199 | Deregulated |
| Massachusetts (MA) | $0.3151 | $177 | Deregulated |
| New York (NY) | $0.2120 | $138 | Deregulated |
| Rhode Island (RI) | $0.2430 | $133 | Deregulated |
Data source: US Energy Information Administration (EIA), Electric Power Monthly, April 2026. Rates shown are average residential rates and may differ from your specific utility tariff. Solar estimates assume a 6 kW system with 82% efficiency factor. Always verify current rates with your utility provider.