Eversource (Connecticut Light and Power) rates and bills

Eversource's price per kWh: three periods, three figures

Eversource in Connecticut is legally The Connecticut Light and Power Company, the name many customers still search for. Its wires reach 1,193,581 homes, 76.3% of the state's residential customers. In 2025, 995,130¹ of them bought their electricity from Eversource as well, on standard service, and the figures below cover only those full-service (bundled) homes:

• 28.88¢ per kWh¹ for the calendar year 2025, from EIA's final annual survey (EIA-861);
• 26.89¢ per kWh for the 12 months from September 2025 to August 2026, from EIA's monthly sample (EIA-861M; the 2026 months are preliminary);
• 23.94¢ per kWh² for August 2026³ alone, one preliminary month.

Each is average revenue per kWh: what those customers paid in total, divided by the kWh they used. It folds together the monthly customer charge, distribution, the standard service supply charge and the rate adjustment charges, and it excludes most taxes. A small apartment pays more per kWh than this average, a large house less.

Among the 5 Connecticut utilities with 10,000 or more full-service residential customers, Eversource's 2025 average was the 2nd highest, 1.5% below the Connecticut average; only United Illuminating, at 35.40¢ per kWh, was higher. Nationally it was 62.4% above the national average for investor-owned utilities and ranked 10th highest of 177 utilities with 100,000 or more residential customers, whose median was 15.07¢ per kWh¹.

EversourceConnecticut average, all providers

Source: EIA-861M monthly sales and revenue by utility; EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential revenue divided by kWh in each month, as reported to EIA's monthly survey (EIA-861M; months since January 2026 preliminary). Bundled (default-service) customers only.

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Month	Eversource (¢/kWh)	kWh per customer	Bill per customer
January 2025	28.95¢	877	$253.81
February 2025	33.76¢	708	$238.88
March 2025	33.26¢	613	$203.70
April 2025	33.40¢	502	$167.75
May 2025	31.86¢	502	$159.93
June 2025	25.51¢	697	$177.93
July 2025	26.69¢	961	$256.53
August 2025	30.93¢	730	$225.88
September 2025	31.02¢	538	$166.74
October 2025	27.11¢	508	$137.80
November 2025	25.42¢	603	$153.40
December 2025	23.31¢	875	$204.04
January 2026	27.27¢	872	$237.78
February 2026	31.11¢	782	$243.21
March 2026	30.38¢	656	$199.21
April 2026	33.36¢	510	$170.18
May 2026	27.33¢	505	$137.96
June 2026	23.31¢	686	$159.80
July 2026	23.59¢	887	$209.24
August 2026	23.94¢	788	$188.56

The 2026 drop and where it came from

The monthly series turned down in 2026. Eversource's August 2026 residential average, 23.94¢ per kWh, was −22.6% against the same month of August 2025, and the 12-month average of 26.89¢ per kWh sits below the 2025 annual figure. Both are preliminary until EIA's final 2026 data. United Illuminating's August 2026³ average changed by −21.4%² over the same year, so the drop was not limited to Eversource.

The timing matches two decisions. On April 22, 2026 the Public Utilities Regulatory Authority (PURA) conditionally approved lower rates for Eversource from May 1, 2026 through April 30, 2027, in its annual review of the rate adjustment mechanism (docket 26-01-03). That mechanism covers six charges: congestion, transmission, systems benefit, competitive transition, electric system improvements and revenue decoupling. PURA said lower public benefits charges drove the decrease, chiefly the costs of the nuclear power contracts with Millstone and Seabrook, along with lower hardship protection costs (uncollectible debt and arrearage forgiveness). In September 2026 the governor's office announced state bonding to keep the public benefits reduction in place through at least April 30, 2027, and said supply rates that took effect on July 1, 2026 had also come down.

The month of lowest use was May 2026: 505 kWh and an average bill of $137.96². May 2026 was both a low-use spring month and the first month of the reduced charges, so EIA's figures cannot separate the two effects.

2025: a small price rise, a larger delivery rise

On EIA's annual figures, the full-service average rose 1.3%, from 28.51¢ per kWh in 2024 to 28.88¢ per kWh in 2025. The average bill rose faster, from $187.10 to $195.35 (+4.4%), because use per home also grew, from 656 kWh⁴ to 677 kWh¹ a month.

The delivery side moved much more. For homes that buy supply from a competitive supplier, Eversource bills delivery only, and that average went from 16.26¢ per kWh⁴ in 2024 to 18.65¢ per kWh in 2025 (+14.7%). At United Illuminating the delivery-only average changed by +3.0%. Eversource's sister utilities show the same direction: the delivery-only average changed by +23.3% at Eversource in Massachusetts and +8.2%¹ at Eversource in New Hampshire.

Eversource (NH)14.20¢

Eversource (CT)18.65¢

Eversource (MA)20.06¢

United Illuminating (CT)20.17¢

Source: EIA-861 annual electric power industry report, 2025 final. Delivery charges only: what the utility billed customers who buy supply elsewhere, divided by their kWh. Not comparable with bundled prices.

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Utility	delivery-only revenue per kWh (residential)
Eversource (NH)	14.20¢
Eversource (CT)	18.65¢
Eversource (MA)	20.06¢
United Illuminating (CT)	20.17¢

Standard service or a supplier: two separate averages

Connecticut homes can buy supply from a licensed supplier while Eversource keeps delivering it. In 2025, 16.6% of Eversource's residential customers did so, 198,451¹ homes. EIA reports two different averages for the two groups:

• Standard service (bundled): 28.88¢ per kWh, supply and delivery together, for the 995,130 homes buying both from Eversource; their average bill was $195.35 for 677 kWh a month.
• Delivery only: 18.65¢ per kWh, what Eversource billed homes with a supplier for delivery alone; their average delivery bill was $160.95 for 863 kWh¹ a month. The supplier's charge comes on top and is not in Eversource's figures.

The two cover different homes and different parts of a bill, so they are not added or set against each other. Homes with a supplier also used more electricity on average than standard-service homes. Across all Connecticut supplier contracts in force during 2025, suppliers billed residential customers 11.78¢ per kWh¹ for supply only, a past average rather than a price on offer. The Connecticut retail choice guide explains how to compare an offer with the standard service rate on a bill.

Eversource beside United Illuminating and its sister utilities

Connecticut's two investor-owned utilities split the state. United Illuminating's full-service customers paid more per kWh in 2025, 35.40¢ per kWh against Eversource's 28.88¢ per kWh, but used only 516 kWh a month, so their average bill was lower: $182.78 against $195.35¹. Over the last 12 months (September 2025 to August 2026) the order held, at 32.49¢ per kWh for United Illuminating and 26.89¢ per kWh² for Eversource.

Within Eversource Energy, Connecticut had the highest residential average of its 3 operating utilities in 2025: New Hampshire's averaged 24.17¢ per kWh and Massachusetts's 21.49¢ per kWh¹. The Eversource Energy page compares the three.

Eversource (MA)21.49¢

Eversource (NH)24.17¢

Eversource (CT)28.88¢

Rhode Island Energy (RI)29.45¢

United Illuminating (CT)35.40¢

Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.

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Utility	average residential price (bundled customers)
Eversource (MA)	21.49¢
Eversource (NH)	24.17¢
Eversource (CT)	28.88¢
Rhode Island Energy (RI)	29.45¢
United Illuminating (CT)	35.40¢

A summer peak in use

EIA's monthly data for Eversource show a summer peak. In the 12 months September 2025 to August 2026, use per home bottomed out at 505 kWh in May 2026, with an average bill of $137.96, and peaked at 887 kWh in July 2026, with $209.24. The bill range is narrower than the use range; summer 2026 bills were also the first to carry the lower charges approved from May. Across the 12 months the average home used 685 kWh and paid $184.25² a month.

538Sep

508Oct

603Nov

875Dec

872Jan

782Feb

656Mar

510Apr

505May

686Jun

887Jul

788Aug

Source: EIA-861M monthly sales and revenue by utility. kWh per residential customer in each month (EIA-861M; months since January 2026 preliminary). The table adds the average bill and price for the month.

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Month	kWh per customer	Bill per customer	¢/kWh
September 2025	538	$166.74	31.02¢
October 2025	508	$137.80	27.11¢
November 2025	603	$153.40	25.42¢
December 2025	875	$204.04	23.31¢
January 2026	872	$237.78	27.27¢
February 2026	782	$243.21	31.11¢
March 2026	656	$199.21	30.38¢
April 2026	510	$170.18	33.36¢
May 2026	505	$137.96	27.33¢
June 2026	686	$159.80	23.31¢
July 2026	887	$209.24	23.59¢
August 2026	788	$188.56	23.94¢

Meters, time-of-use and rooftop solar

Eversource's Connecticut meters are a contrast with United Illuminating's. In EIA's 2025 count, 0.0% of Eversource's residential meters were advanced (smart) meters, against 92.8% at United Illuminating, which leaves Connecticut with the 3rd lowest smart-meter share among the states. Time-varying rates follow the meters: Eversource reported time-of-use and variable peak pricing programs with 611 residential customers enrolled, 0.1% of homes on its wires, against 22.6%⁵ at United Illuminating. For how peak and off-peak prices add up on a bill, see the time-of-use guide.

Rooftop solar is common. Eversource reported 90,904 net-metered residential installations in 2025 with 749.8 megawatts of capacity, 76.2⁵ per 1,000 residential customers. Power those panels produce and use on site does not appear in the use-per-home figures above.

Outages

Eversource customers averaged 217 minutes without power in 2025 counting major storms, more than the Connecticut average of 211 minutes, and 85 minutes on days without major events (state: 86 minutes). The average customer had 1.01 interruptions. United Illuminating's customers averaged 73 minutes⁶ including major events. All figures follow the IEEE 1366 standard.

Counties and business customers

EIA's 2025 service-territory records place Eversource in 8 of the state's 8 legacy counties, the units EIA still uses: Fairfield County, Hartford County, Litchfield County, Middlesex County, New Haven County, New London County, Tolland County and Windham County. In 5 of them no other distribution utility reports service; in the other 3⁷, United Illuminating or a town utility also does. EIA has no price by town, and Eversource's own service map, not a ZIP code, decides who serves an address.

Eversource onlyEversource and other utilitiesOther utilities

Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. EIA-861 2025 service territory: 8 counties. Counts whole counties even where the utility serves only part of one; check the utility's own service-area map for an address.

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County	Other utilities reporting service
Fairfield County	United Illuminating, City of South Norwalk, Norwalk Third Taxing District
Hartford County	none
Litchfield County	none
Middlesex County	none
New Haven County	United Illuminating, Town of Wallingford
New London County	City of Norwich, Groton Dept of Utilities, City of Jewett City, Bozrah Light & Power Company, Mohegan Tribal Utility Authority
Tolland County	none
Windham County	none

Full-service commercial customers paid an average of 22.92¢ per kWh in 2025 and its 1,616 full-service industrial accounts 15.61¢ per kWh; across all customers the average was 27.49¢ per kWh. Businesses buying supply from a supplier paid Eversource 12.52¢ per kWh (commercial) and 9.76¢ per kWh¹ (industrial) for delivery only. The Connecticut page covers the state picture and help paying bills.