Rates by state / Connecticut / United Illuminating Co
Investor Owned · 314,909 residential customers
United Illuminating Co electricity rates
Residential customers paid an average of 35.4¢ per kWh in 2025, 26% above the Connecticut average of 28.0¢ for the latest 12 months.
Average rate
35.4¢/kWh
2025, all residential revenue ÷ kWh
Average bill
$201/mo
At 567 kWh a month
1-year change
+4.0%
5 years: +36.3%
Average rate by year
202026.0¢
202125.2¢
202223.6¢
202333.2¢
202434.0¢
202535.4¢
United Illuminating Co bill at different usage levels
Estimated monthly bill at United Illuminating Co's 2025 average rate of 35.4¢ per kWh. Actual bills vary with your plan, fixed charges and taxes.
| Monthly use | United Illuminating Co | Connecticut average |
|---|---|---|
| 500 kWh (about average here) | $177 | $140 |
| 750 kWh | $266 | $210 |
| 1,000 kWh | $354 | $280 |
| 1,500 kWh | $531 | $420 |
| 2,000 kWh | $708 | $560 |
Other utilities in Connecticut
| Utility | Customers | Rate |
|---|---|---|
| Connecticut Light & Power Co | 1,193,581 | 28.9¢ |
| Constellation NewEnergy, Inc | 107,124 | 30.8¢ |
| Town Square Energy | 49,819 | 30.9¢ |
| Direct Energy Services | 37,918 | 30.0¢ |
| Think Energy, LLC | 28,746 | 30.5¢ |
| Town of Wallingford - (CT) | 21,426 | 17.8¢ |
| City of Norwich - (CT) | 18,967 | 23.4¢ |
| Groton Dept of Utilities - (CT) | 12,596 | 18.1¢ |
United Illuminating Co: common questions
- How much does United Illuminating Co charge per kWh?
- United Illuminating Co residential customers paid an average of 35.4¢ per kWh in 2025, counting all charges, according to EIA Form 861 data.
- What is the average United Illuminating Co electric bill?
- The average United Illuminating Co household used 567 kWh a month in 2025, which works out to about $201 a month at the average rate.
- Is United Illuminating Co cheaper than other utilities in Connecticut?
- United Illuminating Co's average rate is 26% above the Connecticut average of 28.0¢. 14 of 15 utilities in Connecticut have a lower average rate.
- Did United Illuminating Co raise rates?
- United Illuminating Co's average residential rate changed +4.0% from 2024 to 2025 and +36.3% since 2020.
- Is my United Illuminating Co bill too high?
- Enter the kWh and amount from your bill in the free bill check on AverageElectricBill.com. It compares your use with similar Connecticut homes and your rate with United Illuminating Co's average.
Got a United Illuminating Co bill?
Check my billSource: U.S. EIA Form EIA-861, 2025 final data.