Electricity rates in Connecticut: 27.99¢ per kWh
Homes in Connecticut paid an average of 27.99¢ per kilowatt-hour from August 2025 to July 2026, 56% above the U.S. average of 17.99¢. That is the 7th-highest of 51, between New York (28.39¢) and Alaska (26.85¢).
The average Connecticut home used 699 kWh a month — the 16th-least of the 51 — so its typical bill came to $196 a month, the 3rd-highest. At the national rate the same 699 kWh would cost $70 less a month.
In July 2026, the latest month published, the Connecticut rate was 24.16¢.
| Rank | State | Average rate | Latest month | Average home use | Average bill |
|---|---|---|---|---|---|
| 5 | Rhode Island | 29.27¢ | 28.29¢ | 560 kWh/mo | $164/mo |
| 6 | New York | 28.39¢ | 29.90¢ | 587 kWh/mo | $167/mo |
| 7 | Connecticut | 27.99¢ | 24.16¢ | 699 kWh/mo | $196/mo |
| 8 | Alaska | 26.85¢ | 28.83¢ | 587 kWh/mo | $158/mo |
| 9 | New Hampshire | 26.67¢ | 26.60¢ | 641 kWh/mo | $171/mo |
What a month of electricity costs in Connecticut
At 27.99¢ per kWh, every extra 100 kWh a month adds $27.99 to the monthly bill and $336 to the year. The table runs from half to twice the Connecticut average home's 699 kWh, using the same calculation as the calculator above.
| Monthly use | Per month | Per year | vs. U.S. rate (17.99¢) |
|---|---|---|---|
| 350 kWh (half the average) | $98 | $1,176 | +$35 |
| 699 kWh (state average) | $196 | $2,348 | +$70 |
| 1,050 kWh (1.5× the average) | $294 | $3,527 | +$105 |
| 1,400 kWh (twice the average) | $392 | $4,702 | +$140 |
Connecticut electricity through the year
The average Connecticut home's bill peaked at about $245 in January 2026 and was lowest, about $146, in October 2025. Use ran from 525 kWh in October 2025 to 918 kWh in July 2026, 1.7 times as much.
The rate moved too, from 24.16¢ in July 2026 to 32.24¢ in April 2026. A monthly rate includes that month's fuel and seasonal charges, which is why the calculator uses the 12-month average for a yearly estimate.
| Month | Rate | Use per home | Bill per home |
|---|---|---|---|
| Aug 2025 | 30.24¢ | 794 kWh | $240 |
| Sep 2025 | 30.48¢ | 570 kWh | $174 |
| Oct 2025 | 27.72¢ | 525 kWh | $146 |
| Nov 2025 | 27.02¢ | 616 kWh | $166 |
| Dec 2025 | 25.30¢ | 862 kWh | $218 |
| Jan 2026 | 28.30¢ | 867 kWh | $245 |
| Feb 2026 | 30.77¢ | 790 kWh | $243 |
| Mar 2026 | 30.47¢ | 662 kWh | $202 |
| Apr 2026 | 32.24¢ | 535 kWh | $172 |
| May 2026 | 27.37¢ | 534 kWh | $146 |
| Jun 2026 | 24.32¢ | 716 kWh | $174 |
| Jul 2026 | 24.16¢ | 918 kWh | $222 |
Largest electricity providers in Connecticut
Among the 6 largest providers listed, average residential rates in 2024 ran from 15.65¢ at Town of Wallingford to 34.04¢ at United Illuminating Co. On the average Connecticut home's 699 kWh that is a difference of $129 a month.
These are 2024 figures, the latest final year. The Connecticut average was 28.75¢ that year and 27.99¢ over the last 12 months, down 3% — compare the providers with each other, not with today's average.
Together they serve 80% of Connecticut's 1,552,746 residential customers. The rates are each company's residential revenue divided by kilowatt-hours sold, so customer charges are included; a plan or tier can still differ.
| Provider | Type | Homes served | Average rate | Use per home |
|---|---|---|---|---|
| Connecticut Light & Power Co | Investor-owned | 924,132 | 28.51¢ | 656 kWh/mo |
| United Illuminating Co | Investor-owned | 256,302 | 34.04¢ | 542 kWh/mo |
| Town of Wallingford | Municipal | 21,405 | 15.65¢ | 828 kWh/mo |
| City of Norwich | Municipal | 18,870 | 22.78¢ | 616 kWh/mo |
| Groton Dept of Utilities | Municipal | 12,284 | 18.70¢ | 715 kWh/mo |
| Bozrah Light & Power Company | Municipal | 2,434 | 19.33¢ | 832 kWh/mo |