Independent resource. Not affiliated with any utility or energy provider. Data sourced from the U.S. Energy Information Administration.Verified July 2026
Connecticut Electricity Cost 2026: 27.37¢/kWh
Connecticut residential electricity rates average 27.37 cents per kWh in 2026, +48.4% vs the 18.44¢ US national average. The state operates a deregulated retail market with natural gas/nuclear as the primary generation source.
State Rate
27.37
cents/kWh
Monthly Bill
$236
at 863 kWh
vs National
+48.4%
national avg 18.44¢
Rank (cheapest first)
43/50
YoY change -13.4%
Market Type
Deregulated
Residential customers can shop for a supplier
Primary Generation
Natural Gas/Nuclear
per EIA State Energy Profile
Annual Bill (avg usage)
$2,834
vs national $1,910
Connecticut electricity market
Deregulated state. Eversource and United Illuminating handle delivery; residential customers can shop for a supplier via the official EnergizeCT comparison tool. Rates are among the highest in the lower 48 due to constrained natural-gas pipeline capacity and the wind-down of older nuclear / oil generation.
Where Connecticut residents save
Shopping for a competitive supplier on EnergizeCT can save 5-15% on the supply portion vs the utility default. Eversource Energize Connecticut programs offer rebates for heat-pump installation, weatherization, and HVAC upgrades.
Primary utilities
- Eversource Energy
- United Illuminating
- EnergizeCT (state shopping portal)
Official Connecticut supplier comparison tool
Connecticut runs an official, vendor-neutral supplier comparison portal. Use it to see all licensed retail suppliers serving your ZIP code, compare per-kWh supply rates, and check contract terms before signing up.
EnergizeCT →Connecticut bill estimates by usage
| Home Profile | Monthly kWh | Monthly Bill | Annual Bill |
|---|---|---|---|
| Apartment | 500 | $137 | $1,642 |
| Small house | 750 | $205 | $2,463 |
| Average household | 863 | $236 | $2,834 |
| Large house | 1200 | $328 | $3,941 |
| Large house + EV | 1500 | $411 | $4,927 |
Estimates use the Connecticut state-average rate of 27.37¢/kWh from EIA data. Your actual bill includes delivery charges, customer-service fees, and state/local taxes already blended into this retail rate, plus any locality-specific surcharges not captured at the state-average level.