United Illuminating electric rates
Updated October 7, 2026 · Source: EIA Form 861 (2024)
Investor-owned utility serving 312,291 homes in Connecticut.
Your rate
Connecticut is a retail-choice state: this utility's rate case sets the delivery part of your bill. The supply part comes from your chosen supplier or the default service rate.
Estimate your bill
It's on your bill, usually near the top. Starting at 561 kWh, the average for United Illuminating homes.
This is an estimate. Uses the EIA average rate with a nominal $12 fixed charge; real tariffs have tiers, time-of-use pricing and riders. Your bill also includes taxes and fuel adjustments that change month to month.
Rate cases
No rate case on file for United Illuminating right now. We check regulator dockets weekly; last check October 7, 2026. Know of one?
Rate history
United Illuminating's average rate is up 34% since 2020, versus +28% for the U.S. average.
Average residential revenue per kWh, EIA-861. Includes delivery and, where the utility sells it, supply.
Rebates for heat pumps, batteries and EV chargers
We haven't found utility-level rebates for United Illuminating yet. Check Connecticut programs or read what's left after the federal credits ended.
About United Illuminating
- Ownership
- Investor Owned
- Homes served
- 312,291 residential customers (2024)
- Grid operator
- ISNE
- Retail choice
- Yes — you can pick a supplier for the energy portion
- Data
- EIA-861 2024, released October 7, 2026; rate cases checked October 7, 2026
Other utilities in Connecticut
- Eversource Connecticut 25.31¢
- Town of Wallingford 15.65¢
- City of Norwich 22.78¢
- Groton Dept of Utilities 18.7¢