Connecticut · City
Commercial electricity in Stamford, Connecticut
Which electric utilities serve businesses in Stamford, what each charged commercial customers in EIA’s 2025 data, and where Connecticut’s prices stand.
EIA lists 4 electric utilities in Fairfield County, which contains Stamford. Eversource Connecticut, the largest by commercial customers, averaged 22.92¢ per kWh for them in 2025. Connecticut’s average commercial price was 21.69¢ per kWh over the 12 months to August 2026.
Source: EIA Form EIA-861 (2025) and Form EIA-861M; U.S. Census Bureau
Electric utilities serving Stamford
These are the utilities EIA records in Fairfield County. EIA lists a utility in a county when it has customers anywhere in it, so this is everyone with a presence, ordered by commercial customers across Connecticut, not a statement about any one address. Prices are EIA’s averages over all of each utility’s commercial customers: revenue divided by kWh.
| Utility | Type | Commercial customers in CT | Average commercial price, 2025 |
|---|---|---|---|
| Eversource Connecticut | Investor-owned | 113,578 | 22.92¢ |
| United Illuminating | Investor-owned | 32,464 | 33.84¢ |
| City of South Norwalk | fewer than 500 commercial customers | ||
| Norwalk Third Taxing District | fewer than 500 commercial customers |
Find the list for a single ZIP Code with the utility lookup, or set utilities side by side with the comparison tool.
What businesses in Stamford pay
Across Connecticut, businesses paid an average 21.69¢ per kWh over the 12 months to August 2026, 56.4% above the U.S. average of 13.87¢, and down 7.3% on the 12 months before. That ranks Connecticut 9 of 51, where 1 is the highest price. In 2025 the average commercial account in the state used 6,190 kWh a month, about $1,419 a month at the state price; that is a mean pulled up by a few very large users, so most small businesses use less.
A city has no price of its own: two businesses on the same street can pay very different amounts per kWh, because the rate schedule, the size of the peak and, where it is allowed, the supply contract matter more than the location. The Connecticut page has the state’s price history since 2010 and every utility with at least 500 commercial customers.
Choosing a supplier in Stamford
Connecticut commercial accounts may purchase supply from a licensed competitive supplier while the local utility continues to own delivery, metering and outage response. Eligibility, aggregation status and current supplier arrangements must be confirmed from the bill.
Where prices are heading
EIA does not forecast single states. For the New England census division, which includes Connecticut, its November 2026 Short-Term Energy Outlook puts the average commercial price at 23.16¢ per kWh for 2026 and 23.69¢ for 2027, up 5.2% from 22.51¢ in 2025. The forecast for every region.
About Stamford
The Census Bureau estimates Stamford had 139,535 residents on July 1, 2025, up 3.0% from 135,447 in 2020. It lies in Fairfield County.
Other cities in Connecticut
Common questions
- Who provides electricity to businesses in Stamford?
- EIA lists Eversource Connecticut, United Illuminating, City of South Norwalk and Norwalk Third Taxing District as electric utilities in Fairfield County. Which one serves a given address depends on the street; the utility on an existing bill is the definitive answer, and a utility can confirm service for a new site.
- What is the average commercial electricity rate in Stamford?
- There is no official figure for a city. EIA publishes prices by state and by utility: Eversource Connecticut averaged 22.92¢ per kWh for its commercial customers in 2025, and Connecticut averaged 21.69¢ over the 12 months to August 2026. A business’s own price depends on its rate schedule, its demand and, where it can choose, its supply contract.
- Can a business in Stamford choose its electricity supplier?
- Connecticut commercial accounts may purchase supply from a licensed competitive supplier while the local utility continues to own delivery, metering and outage response. Eligibility, aggregation status and current supplier arrangements must be confirmed from the bill. The state page for Connecticut explains how it works and who regulates it.
Averages describe Stamford; a bill describes your business. A person can read yours: rate schedule, demand, riders, contract window. Nobody calls unless you ask.