In July 2026, homes in Connecticut paid an average of 24.16¢ per kWh, the 11th most expensive of the 50 states and DC and 31.9% above the U.S. average of 18.31¢.
That price is down 12.5% from a year earlier.
Over the past 12 months the average home in Connecticut used 699 kWh a month, for an average bill of $196 (U.S.: $157).
About electricity in Connecticut
Almost all Connecticut homes are served by investor-owned utilities, and households can also buy their supply from a retail supplier. In-state power comes mainly from natural gas and nuclear plants, and the state produces more than it uses.
- natural gas 56%
- nuclear 38%
- other 5%
The Public Utilities Regulatory Authority (PURA) is the state agency that regulates electric utilities in Connecticut.
What drives electricity prices in Connecticut
Connecticut's prices are well above the national average. Like the rest of New England, it depends on natural gas that arrives through crowded pipelines, so power prices jump in cold weather. Unlike most of its neighbors, it makes more electricity than it uses, with the Millstone nuclear plant supplying much of it.
Bills have two big parts: supply, which Eversource and United Illuminating buy for customers who do not pick a supplier and reprice each January and July, and delivery, which also carries the public benefits charge for state programs. In 2025 and 2026 the state moved part of those program costs off bills and onto state bonds, and payments from its contracts with the Millstone and Seabrook nuclear plants turned the public benefits charge into a temporary credit, cutting bills.
Households can buy from a retail supplier and compare offers on the state's EnergizeCT rate board.
Average electric bill in Connecticut
Over the last 12 months the average Connecticut home paid $196 a month for electricity, the 3rd highest of the 50 states and DC. In July 2026 the average bill was $222 for 918 kWh.
Over the last 12 months, homes in Connecticut used the most electricity in July, when air conditioning drives usage up: an average of 918 kWh and a $222 bill. The lightest month was October, at 525 kWh and $146.
What would I pay?
| Monthly use | Per month | Per year |
|---|---|---|
| 500 kWh × 24.16¢typical | $120.80 | $1,450 |
| 1,000 kWh × 24.16¢ | $241.60 | $2,899 |
| 1,500 kWh × 24.16¢ | $362.40 | $4,349 |
| 2,000 kWh × 24.16¢ | $483.20 | $5,798 |
Estimate your own bill
Cost of electricity in Connecticut by month
Businesses in Connecticut paid 19.87¢ per kWh in July 2026 (the 11th most expensive for business power), and industrial users paid 17.29¢. See business electricity rates in Connecticut.
Electric companies in Connecticut
6 utilities deliver electricity to homes in Connecticut. The largest is Connecticut Light & Power Co, serving 1,193,581 homes.
| Utility | Homes served | Avg. home rate |
|---|---|---|
| Connecticut Light & Power Co | 1,193,581 | 28.88¢ |
| United Illuminating Co | 314,909 | 35.40¢ |
| Town of Wallingford | 21,426 | 17.78¢ |
| City of Norwich | 18,967 | 23.35¢ |
| Groton Dept of Utilities | 12,596 | 18.05¢ |
| Bozrah Light & Power Company | 2,440 | 19.75¢ |
"Avg. home rate" is what each utility's full-service residential customers paid on average in 2025 (revenue ÷ kWh sold). Delivery-only utilities have no full-service rate.
Can you choose your electricity supplier in Connecticut?
Yes. Households in Connecticut can buy electricity from a licensed retail supplier instead of their utility; the utility still delivers the power and handles outages.
Compare current offers on the official state site: EnergizeCT Rate Board.
Largest retail suppliers in Connecticut by residential customers (2025):
- Constellation NewEnergy, Inc (107,124 homes)
- Town Square Energy (49,819 homes)
- Direct Energy Services (37,918 homes)
- Think Energy, LLC (28,746 homes)
- XOOM Energy Connecticut, LLC (8,430 homes)
Listed by size only, as reported to EIA. This is not a recommendation.
Connecticut compared with neighboring states
| State | Price per kWh | Avg. monthly bill (12 mo.) |
|---|---|---|
| Connecticut | 24.16¢ | $196 |
| Rhode Island | 28.29¢ | $164 |
| New York | 29.90¢ | $167 |
| Massachusetts | 30.49¢ | $182 |
Connecticut electricity FAQ
What is the average electric bill in Connecticut?
The average home in Connecticut paid $196 a month over the last 12 months, using 699 kWh. That is the 3rd highest of the 50 states and DC. In July 2026 alone, the average bill was $222.
How much does electricity cost per kWh in Connecticut?
Homes paid an average of 24.16¢ per kWh in July 2026, 31.9% above the U.S. average of 18.31¢. Businesses paid 19.87¢ per kWh.
Which month has the highest electric bills in Connecticut?
July, in the last 12 months of data: the average bill reached $222 (918 kWh), compared with $146 in October, the lowest month.
Can I choose my electricity provider in Connecticut?
Yes. Connecticut lets households buy electricity from a retail supplier, while the local utility still delivers it. Compare offers on EnergizeCT Rate Board, the official state site.
What are the largest electric companies in Connecticut?
By number of residential customers in 2025: Connecticut Light & Power Co (1,193,581), United Illuminating Co (314,909), Town of Wallingford (21,426).
Latest CT electric rates, bills and usage: U.S. Energy Information Administration retail sales data (forms EIA-861M and EIA-861), latest month July 2026. Utilities and suppliers: EIA-861 (2025). Bills and usage are revenue and sales divided by customers. Last updated 2026-10-20.