Electricity in New Haven, Connecticut
3 electric utilities serve homes in New Haven County, where New Haven is: Eversource (Connecticut), United Illuminating (UI) and Town of Wallingford. The name of your utility is on your bill. In 2025, the average home bill of these utilities was $151.51 (Town of Wallingford) to $195.35 (Eversource (Connecticut)) a month. The Connecticut average was $206.46.
- 138,774 people (2025 estimate)
- New Haven County
- EIA data, 2025
Electric utilities in New Haven
EIA lists utilities by county, not by city. These utilities serve homes in New Haven County. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Connecticut | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| Eversource (Connecticut)Investor-owned utility · bill calculator | 1,193,581 | $195.35676 kWh, 28.9¢ | $245.64 |
| United Illuminating (UI)Investor-owned utility · bill calculator | 314,909 | $182.78516 kWh, 35.4¢ | $278.46 |
| Town of WallingfordCity utility | 21,426 | $151.51852 kWh, 17.8¢ | — |
The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861); a dash means that its homes buy power from a retail supplier. The 1,000 kWh bill is from the official tariff, before taxes, for the utilities that have a calculator on this site. The Connecticut average was $206.46 a month for 704 kWh (29.3¢ per kWh).
Solar power in New Haven
A home solar system on a south-facing roof in New Haven makes about 1,287 kWh a year for each kW of panels (PVWatts, National Laboratory of the Rockies). A 6 kW system makes about 7,720 kWh a year. See what that saves on your utility's rates with the solar savings calculator.
Lower your electric bill in New Haven
- Open your utility above for its average bill, outages and rates, or the bill calculator to check your own bill.
- Help paying your Eversource (Connecticut) bill: 9 programs, with who qualifies and how to apply.
- Help paying your United Illuminating (UI) bill: 5 programs, with who qualifies and how to apply.
- Help paying the electric bill in Connecticut: bill assistance, payment plans and discounts.
- Why is my electric bill so high? and the appliance cost calculator.
More about Connecticut: Connecticut electric rates and all Connecticut utilities, business electricity rates and natural gas bills. All cities of the county: electricity in New Haven County. Other cities: Hartford, Bridgeport, Middletown, New Britain, Norwich, Torrington.
Who provides electricity in New Haven, CT?
3 electric utilities serve homes in New Haven County, where New Haven is: Eversource (Connecticut), United Illuminating (UI) and Town of Wallingford. The name of your utility is on your bill.
What is the average electric bill in New Haven, CT?
In 2025, the average home bill of these utilities was $151.51 (Town of Wallingford) to $195.35 (Eversource (Connecticut)) a month. The Connecticut average was $206.46 a month for 704 kWh. Your bill depends on your kWh and your rate plan.
utilityratecalc.com is not part of any utility or city government. Sources: Census Bureau city population estimates, Vintage 2025 (the city and its counties); EIA-861 data, 2025 (utilities by county, homes and average bills).