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Data as of 2026-06
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Built 2026-09-19 (19 September 2026)

Connecticut Electricity: Generation Mix and Retail Prices

Connecticut generated 43.6 TWh of electricity in 2025, 56% of it from gas. The average retail price was 25.68 US cents/kWh in 2025. These are EIA statistics for 2025, with monthly figures through June 2026; they are not real time.

Key Facts

  • Connecticut generated 43.6 TWh of electricity in 2025, the 34th most of the 51 states and DC.
  • Gas was the largest source of Connecticut's electricity in 2025, at 56.2% of generation.
  • Nuclear was the second largest source of Connecticut's electricity in 2025, at 38.4% of generation.
  • Connecticut's electricity generation rose from 30.5 TWh in 2001 to 43.6 TWh in 2025.
  • The average retail price of electricity in Connecticut was 25.68 US cents/kWh in 2025, the 4th highest of the 51 states and DC.
  • Residential customers in Connecticut paid an average of 29.38 US cents/kWh in 2025.
  • Connecticut generated 3.74 TWh of electricity in June 2026.

Key Figures

MeasureValueAs of / source
Total generation43.6 TWh2025 · EIA
Generation rank34 of 512025 · EIA
Average retail price, all sectors25.68 US cents/kWh2025 · EIA
Price rank, highest first4 of 512025 · EIA
Retail sales27.6 TWh2025 · EIA
Retail customers1,762,7232025 · EIA
Retail revenueUSD 7,079 million2025 · EIA

Generation Mix, 2025

SourceGenerationShare
Gas24.5 TWh56.2%
Nuclear16.7 TWh38.4%
Solar758 GWh1.7%
Bioenergy591 GWh1.4%
Other437 GWh1.0%
Hydro342 GWh0.8%
Oil244 GWh0.6%
Wind12.3 GWh0.0%

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2025. Utility scale generation, all sectors; small scale solar is not included.

Year by Year

EIA annual statistics, 2001 to 2025
Connecticut electricity generation by source, 2001 to 2025 Connecticut's electricity generation by main source from 2001 to 2025, in TWh. In 2025 the largest sources were gas at 24.5 TWh, nuclear at 16.7 TWh, solar at 758 GWh, bioenergy at 591 GWh, other at 437 GWh. 0 8 15 23 30 20012006201120162021
Connecticut's electricity generation by main source from 2001 to 2025, in TWh. In 2025 the largest sources were gas at 24.5 TWh, nuclear at 16.7 TWh, solar at 758 GWh, bioenergy at 591 GWh, other at 437 GWh.
Annual statistics through 2025, TWh
Connecticut electricity generation by source, 2001 to 2025
YearGasNuclearSolarBioenergyOther
20014.09 TWh15.4 TWhn/a909 GWh869 GWh
20028.87 TWh14.9 TWhn/a821 GWh804 GWh
20035.06 TWh16.1 TWhn/a786 GWh792 GWh
20048.11 TWh16.5 TWhn/a758 GWh763 GWh
20058.86 TWh15.6 TWhn/a753 GWh740 GWh
200610.5 TWh16.6 TWhn/a763 GWh739 GWh
20079.93 TWh16.4 TWhn/a730 GWh726 GWh
20088.07 TWh15.4 TWhn/a734 GWh710 GWh
20099.81 TWh16.7 TWhn/a759 GWh713 GWh
201011.7 TWh16.8 TWhn/a740 GWh717 GWh
201115.2 TWh15.9 TWhn/a660 GWh705 GWh
201216.5 TWh17.1 TWhn/a667 GWh756 GWh
201315.8 TWh17.1 TWh0 TWh652 GWh711 GWh
201414.7 TWh15.8 TWh11.7 GWh757 GWh605 GWh
201517.4 TWh17.4 TWh17.4 GWh787 GWh556 GWh
201618.0 TWh16.6 TWh24.5 GWh856 GWh577 GWh
201716.0 TWh16.5 TWh39.9 GWh792 GWh547 GWh
201820.0 TWh16.9 TWh106 GWh756 GWh465 GWh
201921.3 TWh16.7 TWh138 GWh749 GWh578 GWh
202023.5 TWh15.7 TWh214 GWh782 GWh591 GWh
202124.5 TWh17.2 TWh265 GWh757 GWh571 GWh
202224.5 TWh16.5 TWh413 GWh514 GWh492 GWh
202325.0 TWh13.7 TWh421 GWh591 GWh429 GWh
202426.0 TWh16.9 TWh476 GWh551 GWh424 GWh
202524.5 TWh16.7 TWh758 GWh591 GWh437 GWh
YearGenerationLargest sourceAverage retail price
2025 43.6 TWh Gas 56.2% 25.68 US cents/kWh
2024 44.8 TWh Gas 58.2% 24.37 US cents/kWh
2023 40.7 TWh Gas 61.4% 24.24 US cents/kWh
2022 43.1 TWh Gas 57.0% 21.08 US cents/kWh
2021 44.1 TWh Gas 55.6% 18.32 US cents/kWh
2020 41.2 TWh Gas 57.1% 19.13 US cents/kWh
2019 40.1 TWh Gas 53.3% 18.66 US cents/kWh
2018 39.5 TWh Gas 50.7% 18.41 US cents/kWh
2017 34.6 TWh Nuclear 47.7% 17.55 US cents/kWh
2016 36.5 TWh Gas 49.2% 17.24 US cents/kWh

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2025.

Retail Electricity Prices

Average revenue per kWh sold, 2001 to 2025
Connecticut average retail electricity price by sector, 2001 to 2025 Average retail electricity prices in Connecticut by customer sector, in US cents per kWh. In 2025 the all sector average was 25.68 US cents/kWh and residential customers paid 29.38 US cents/kWh. 0 8 15 23 30 20012006201120162021
Average retail electricity prices in Connecticut by customer sector, in US cents per kWh. In 2025 the all sector average was 25.68 US cents/kWh and residential customers paid 29.38 US cents/kWh.
Annual statistics through 2025, US cents/kWh
Connecticut average retail electricity price by sector, 2001 to 2025
YearAll sectorsResidentialCommercialIndustrial
20019.62 US cents/kWh10.90 US cents/kWh9.26 US cents/kWh7.62 US cents/kWh
20029.71 US cents/kWh10.96 US cents/kWh9.32 US cents/kWh7.68 US cents/kWh
200310.16 US cents/kWh11.31 US cents/kWh9.93 US cents/kWh7.99 US cents/kWh
200410.26 US cents/kWh11.63 US cents/kWh9.90 US cents/kWh7.89 US cents/kWh
200512.06 US cents/kWh13.64 US cents/kWh11.53 US cents/kWh9.40 US cents/kWh
200614.83 US cents/kWh16.86 US cents/kWh14.03 US cents/kWh11.71 US cents/kWh
200716.45 US cents/kWh19.11 US cents/kWh15.39 US cents/kWh12.92 US cents/kWh
200817.80 US cents/kWh19.54 US cents/kWh17.12 US cents/kWh14.93 US cents/kWh
200918.07 US cents/kWh20.33 US cents/kWh16.87 US cents/kWh14.99 US cents/kWh
201017.38 US cents/kWh19.25 US cents/kWh16.45 US cents/kWh14.51 US cents/kWh
201116.35 US cents/kWh18.11 US cents/kWh15.57 US cents/kWh13.24 US cents/kWh
201215.54 US cents/kWh17.34 US cents/kWh14.65 US cents/kWh12.67 US cents/kWh
201315.66 US cents/kWh17.55 US cents/kWh14.63 US cents/kWh12.61 US cents/kWh
201417.05 US cents/kWh19.75 US cents/kWh15.55 US cents/kWh12.92 US cents/kWh
201517.77 US cents/kWh20.94 US cents/kWh15.97 US cents/kWh12.95 US cents/kWh
201617.24 US cents/kWh20.01 US cents/kWh15.75 US cents/kWh12.81 US cents/kWh
201717.55 US cents/kWh20.29 US cents/kWh16.06 US cents/kWh13.10 US cents/kWh
201818.41 US cents/kWh21.20 US cents/kWh16.76 US cents/kWh13.77 US cents/kWh
201918.66 US cents/kWh21.87 US cents/kWh16.75 US cents/kWh13.44 US cents/kWh
202019.13 US cents/kWh22.71 US cents/kWh16.58 US cents/kWh13.07 US cents/kWh
202118.32 US cents/kWh21.91 US cents/kWh16.46 US cents/kWh9.63 US cents/kWh
202221.08 US cents/kWh24.61 US cents/kWh18.54 US cents/kWh15.07 US cents/kWh
202324.24 US cents/kWh29.88 US cents/kWh19.99 US cents/kWh15.69 US cents/kWh
202424.37 US cents/kWh28.75 US cents/kWh21.21 US cents/kWh17.12 US cents/kWh
202525.68 US cents/kWh29.38 US cents/kWh23.11 US cents/kWh18.35 US cents/kWh
Sector, 2025Average priceSalesCustomers
All sectors 25.68 US cents/kWh 27.6 TWh 1,762,723
Residential 29.38 US cents/kWh 13.4 TWh 1,602,362
Commercial 23.11 US cents/kWh 11.5 TWh 156,612
Industrial 18.35 US cents/kWh 2.56 TWh 3,746
Transportation 18.36 US cents/kWh 172 GWh 3

Prices are average revenue per kWh sold, including delivery charges and taxes collected by utilities, in nominal US cents.

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2025.

Month by Month

EIA monthly statistics, preliminary for recent months
MonthGenerationAverage price, all sectorsResidential price
June 2026 3.74 TWh 21.53 US cents/kWh 24.32 US cents/kWh
May 2026 3.39 TWh 23.38 US cents/kWh 27.37 US cents/kWh
April 2026 3.19 TWh 26.78 US cents/kWh 32.24 US cents/kWh
March 2026 3.99 TWh 26.52 US cents/kWh 30.47 US cents/kWh
February 2026 3.71 TWh 27.61 US cents/kWh 30.77 US cents/kWh
January 2026 4.11 TWh 25.71 US cents/kWh 28.30 US cents/kWh
December 2025 4.09 TWh 23.57 US cents/kWh 25.30 US cents/kWh
November 2025 3.70 TWh 23.58 US cents/kWh 27.02 US cents/kWh
October 2025 3.18 TWh 23.14 US cents/kWh 27.72 US cents/kWh
September 2025 3.78 TWh 25.19 US cents/kWh 30.48 US cents/kWh
August 2025 4.13 TWh 26.55 US cents/kWh 30.24 US cents/kWh
July 2025 4.48 TWh 25.02 US cents/kWh 27.60 US cents/kWh

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of June 2026.