State hub · 15 providers

Connecticut electricity rates by utility, 2025

Connecticut homes paid an average of 29.31¢ per kWh in 2025, the 47th lowest of 51 (50 states and D.C.), and used 704 kWh a month for an average bill of $206. Among full-service utilities, averages ran from 17.78¢ (Town of Wallingford (CT)) to 35.40¢ (United Illuminating Co).

29.31¢Avg residential ¢/kWh (2025)+0.57¢ (+2.0%) vs 2024
$206Avg monthly billU.S.: $151
704 kWhAvg monthly useU.S.: 874 kWh
24.51¢August 2026 (preliminary)August 2025: 30.17¢

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Your monthly use (kWh)

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Rate (¢ per kWh)

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Estimated bill at your rate$206/month

The same usage at each average rate
Rate	¢/kWh	Monthly bill	Yearly
Connecticut average, 2025	29.31¢	$206	$2,476
Connecticut average, 2025	29.31¢	$206	$2,476
Connecticut, August 2026 (preliminary)	24.51¢	$173	$2,071
U.S. average, 2025	17.23¢	$121	$1,456

How Connecticut compares

U.S. residential average, 2025: 17.23¢ per kWh and $151 a month. Connecticut is 70% above it.
Change since 2024: +0.57¢ (+2.0%) per kWh (U.S.: +0.76¢ (+4.6%)).
August 2026 (preliminary): 24.51¢ per kWh, against 30.17¢ in August 2025 (−5.66¢ (-18.8%)).
Connecticut has retail choice for at least some customers: EIA lists 9 energy suppliers and 0 delivery-only utilities with residential customers. A supplier’s price excludes delivery charges, so compare full-service rates with supplier price plus delivery.

Every Connecticut provider with residential customers

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Connecticut residential electricity providers, 2025 (largest first)
Provider	Type	Customers	¢/kWh	Avg bill	Change vs 2024
Connecticut Light & Power Co	Full-service utility	995,130	28.88¢	$195	+0.37¢ (+1.3%)
United Illuminating Co	Full-service utility	261,151	35.40¢	$183	+1.36¢ (+4.0%)
Constellation NewEnergy, Inc	Energy supplier	107,124	11.86¢	$89	−0.83¢ (-6.5%)
Town Square Energy	Energy supplier	49,819	11.90¢	$101	−0.45¢ (-3.6%)
Direct Energy Services	Energy supplier	37,918	11.08¢	$86	−1.73¢ (-13.5%)
Think Energy, LLC	Energy supplier	28,746	11.53¢	$95	−0.22¢ (-1.9%)
Town of Wallingford (CT)	Full-service utility	21,426	17.78¢	$152	+2.13¢ (+13.6%)
City of Norwich (CT)	Full-service utility	18,967	23.35¢	$148	+0.57¢ (+2.5%)
Groton Dept of Utilities (CT)	Full-service utility	12,596	18.05¢	$134	−0.65¢ (-3.5%)
XOOM Energy Connecticut, LLC	Energy supplier	8,430	13.09¢	$83	−0.20¢ (-1.5%)
Major Energy Electric Services	Energy supplier	6,374	11.67¢	$94	−0.96¢ (-7.6%)
North American Power and Gas, LLC	Energy supplier	3,243	16.35¢	$105	−0.87¢ (-5.1%)
Bozrah Light & Power Company	Full-service utility	2,440	19.75¢	$169	+0.42¢ (+2.2%)
Reliant Energy Northeast LLC	Energy supplier	105	7.97¢	$67	−0.05¢ (-0.7%)
Energy Plus Holdings LLC	Energy supplier	26	8.24¢	$66	+0.26¢ (+3.2%)

Sources

U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 final data (f8612025.zip, file dated October 7, 2026): Sales to Ultimate Customers, Average Monthly Bill and Service Territory tables.
EIA Form EIA-861, 2024 final data (f8612024.zip, file dated December 4, 2025), for the 2024 comparison.
EIA Electric Power Monthly, Table 5.6.A (average price by state, August 2026 and August 2025; 2026 values are preliminary), file dated October 22, 2026.

Average price = residential revenue ÷ residential kWh sold, as reported to EIA. It includes fixed monthly charges, taxes passed through in revenue and seasonal tiers, averaged over the year. Your own rate depends on your tariff and usage.