Eversource electric rates and bills in Massachusetts
Eversource's 306,795 default-service customers in Massachusetts paid an average of 21.49¢ per kWh in 2025, for an average bill of $101.86 a month on 474 kWh.1 Over the last 12 months (Sep 2025–Aug 2026) the average was 19.73¢, and 20.85¢ in August 2026.2 Another 968,061 homes on its wires (75.9%) buy their supply elsewhere and pay Eversource delivery charges averaging 20.06¢ per kWh, plus their supplier's price.
EIA-861 2025 final (released October 7, 2026) and EIA's monthly utility survey through August 2026 (preliminary); next monthly update expected November 24, 2026. Averages are revenue divided by kWh, all charges included: not the rate printed in a tariff.
11 of 14 Massachusetts counties served (EIA-861 2025)
Eversource carries power to 1,274,856 Massachusetts homes, but only 306,795 of them bought their electricity from it in 2025; the rest used a competitive supplier or a town aggregation program. Those full-service homes paid an average of 21.49¢ per kWh, −28.2% on 2024, while the delivery-only average billed to everyone else changed by +23.3%1.
Most Eversource homes are not on the price EIA ranks
In 2025, 1,274,856 Massachusetts homes were on Eversource's wires, 45.5% of the state's residential customers. Only 306,795 of them were full-service (bundled) customers, buying both the electricity and its delivery from Eversource's default service. The other 968,061 bought their supply from a competitive supplier or through their town's aggregation program, so 75.9% of Eversource's residential customers had left default supply. Across the state the share was 63.6%, the highest1 of any state.
That split decides what "Eversource rates per kWh" can mean. EIA publishes two separate residential averages for the utility, and they belong to different groups of homes:
- Full service (bundled): 21.49¢ per kWh in 2025, for the 306,795 default-service homes. EIA's monthly survey gives 19.73¢ per kWh for the 12 months from September 2025 to August 2026 and 20.85¢ per kWh2 for August 20263 alone; the 2026 months are preliminary.
- Delivery only: 20.06¢ per kWh in 2025, what Eversource billed the 968,0611 homes that buy supply elsewhere. Their supplier's charge is billed on top and is not in this figure.
Both are average revenue per kWh: what the group paid Eversource in total, customer charge and adjustments included, divided by the kWh it used. Neither is a line of the tariff, and neither is what a given home pays per kWh. The two averages are never added together.
A 2025 fall that delivery charges did not share
Eversource's full-service average went from 29.91¢ per kWh in 2024 to 21.49¢ per kWh in 2025, a fall of 28.2%. The average full-service bill fell from $137.02 to $101.86 (−25.7%), although use per home rose slightly, from 458 kWh4 to 474 kWh1 a month. Across all Massachusetts providers, the residential average rose 3.6% over the same years, to 30.41¢ per kWh5.
The delivery side moved the other way. Eversource's delivery-only average rose from 16.27¢ per kWh4 to 20.06¢ per kWh1 between 2024 and 2025. As a result, the 2025 full-service average, which pays for supply as well as delivery, sits barely above the delivery-only average. EIA publishes what each utility reports, and these figures alone do not show why the full-service average fell; treat it as a reported average for one small group of homes, not as a sign that Eversource's charges were cut by that much. The charges themselves, including default-service supply prices, are in the tariffs Eversource files with the Massachusetts Department of Public Utilities, which also decides its rate cases.
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.
Show the numbers
| Month | Eversource (¢/kWh) | kWh per customer | Bill per customer |
|---|---|---|---|
| January 2025 | 27.81¢ | 477 | $132.57 |
| February 2025 | 26.33¢ | 462 | $121.63 |
| March 2025 | 23.54¢ | 459 | $108.06 |
| April 2025 | 20.22¢ | 404 | $81.73 |
| May 2025 | 19.64¢ | 382 | $75.07 |
| June 2025 | 19.58¢ | 433 | $84.80 |
| July 2025 | 19.05¢ | 656 | $124.95 |
| August 2025 | 19.66¢ | 606 | $119.02 |
| September 2025 | 20.47¢ | 464 | $94.95 |
| October 2025 | 20.58¢ | 385 | $79.17 |
| November 2025 | 19.90¢ | 409 | $81.41 |
| December 2025 | 20.23¢ | 528 | $106.74 |
| January 2026 | 20.12¢ | 608 | $122.38 |
| February 2026 | 18.31¢ | 618 | $113.08 |
| March 2026 | 17.59¢ | 522 | $91.74 |
| April 2026 | 19.09¢ | 420 | $80.17 |
| May 2026 | 18.55¢ | 417 | $77.35 |
| June 2026 | 20.58¢ | 430 | $88.45 |
| July 2026 | 20.10¢ | 588 | $118.25 |
| August 2026 | 20.85¢ | 565 | $117.86 |
The monthly series continues into 2026. Over the 12 months to August 2026, full-service homes averaged 19.73¢ per kWh and $97.75 a month for 495 kWh. The August 20263 reading of 20.85¢ per kWh was +6.1%2 on August 2025, a single preliminary month.
What a supplier customer pays Eversource
For the 968,061 homes with another supplier, Eversource's part of the bill averaged $114.60 a month in 2025, for 571 kWh1. The supplier's or aggregation program's price comes on top, at whatever its contract set, and EIA does not report it by utility.
Statewide, EIA's 2025 figures separate the same three parts across all utilities: default-service homes paid an average of 24.03¢ per kWh for supply and delivery together, delivery-only homes paid their utility 19.49¢ per kWh, and competitive suppliers' residential customers paid them 15.22¢ per kWh1 for supply alone. Each is a past average for a different group of customers, not an offer and not a sum of the others. The Department of Public Utilities runs Energy Switch Massachusetts, its site for shopping for electric supply.
Source: EIA-861 annual electric power industry report, 2025 final. Average revenue per kWh by service part, EIA-861 2025. Supply-only and delivery-only averages each cover only part of a bill and different groups of customers; adding them gives only a rough estimate of what a shopping customer paid in total.
Show the numbers
| Part of the market | ¢/kWh |
|---|---|
| Utility full-service customers (default service): supply and delivery | 24.03¢ |
| Competitive suppliers and CCAs: supply only | 15.22¢ |
| Utility delivery for customers of a supplier: delivery only | 19.49¢ |
Next to National Grid and the other Eversource utilities
Massachusetts has two large distribution utilities, and together they serve 89.4% of the state's residential customers. Among the 15 Massachusetts utilities with 10,000 or more full-service homes, Eversource's 2025 average was the 2nd highest, 29.3% below the Massachusetts average; National Grid, the highest, averaged 33.66¢ per kWh. Nationally Eversource ranked 28th highest of 177 large utilities and was 20.9% above the national average for investor-owned utilities1.
On delivery-only averages the two utilities are much closer, and Eversource's is the higher: 20.06¢ per kWh in 2025, against 18.73¢ per kWh at National Grid, and a smaller share of National Grid's homes had left default supply (64.4%1).
Eversource Energy also owns the distribution utilities in Connecticut and New Hampshire. Their 2025 full-service averages were 28.88¢ per kWh and 24.17¢ per kWh, so Eversource (Massachusetts) had the lowest of the three. Their delivery-only averages were 18.65¢ per kWh and 14.20¢ per kWh, and far fewer of their homes used a supplier: 16.6% in Connecticut and 43.2%1 in New Hampshire. The Eversource Energy page sets the three side by side.
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.
Show the numbers
| Utility | delivery-only revenue per kWh (residential) |
|---|---|
| Eversource (NH) | 14.20¢ |
| Eversource (CT) | 18.65¢ |
| National Grid (MA) | 18.73¢ |
| Eversource (MA) | 20.06¢ |
Use peaks in February
EIA's monthly data for Eversource's full-service homes show a winter peak. Across September 2025 to August 2026, monthly use per home swung between 385 kWh in October 2025 and 618 kWh in February 2026, with average bills of $79.17 and $113.08 in those months. National Grid's peak fell in January 20262. Massachusetts homes use little electricity by national standards: the state's residential average was 596 kWh a month in 2025, the 8th lowest6 among the 50 states and DC.
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.
Show the numbers
| Month | kWh per customer | Bill per customer | ¢/kWh |
|---|---|---|---|
| September 2025 | 464 | $94.95 | 20.47¢ |
| October 2025 | 385 | $79.17 | 20.58¢ |
| November 2025 | 409 | $81.41 | 19.90¢ |
| December 2025 | 528 | $106.74 | 20.23¢ |
| January 2026 | 608 | $122.38 | 20.12¢ |
| February 2026 | 618 | $113.08 | 18.31¢ |
| March 2026 | 522 | $91.74 | 17.59¢ |
| April 2026 | 420 | $80.17 | 19.09¢ |
| May 2026 | 417 | $77.35 | 18.55¢ |
| June 2026 | 430 | $88.45 | 20.58¢ |
| July 2026 | 588 | $118.25 | 20.10¢ |
| August 2026 | 565 | $117.86 | 20.85¢ |
No advanced meters, many solar roofs
EIA's 2025 meter count shows 0.0% of Eversource's Massachusetts residential meters as advanced (AMI) meters, against 29.2%7 at National Grid. Rates that vary by time of day depend on meters that record when power is used; the time-of-use guide explains how such rates affect a bill.
Rooftop solar is common. Eversource reported 89,475 net-metered residential installations with 651.4 megawatts of capacity, or 70.2 per 1,000 residential customers, against 93.07 per 1,000 at National Grid in 2025.
Outage minutes
Eversource's Massachusetts customers averaged 113 minutes without power in 2025 counting major storms, fewer than the Massachusetts average of 122 minutes, and 66 minutes on days without major events. The average customer had 0.81 interruptions. National Grid's customers averaged 133 minutes8 with major storms included. All figures follow the IEEE 1366 standard.
Business customers
Eversource's full-service commercial customers paid an average of 17.69¢ per kWh in 2025. Its 298 full-service industrial accounts paid 23.13¢ per kWh, more per kWh than homes did; across all full-service customers the average was 20.35¢ per kWh. Most businesses on Eversource's wires buy supply elsewhere: 173,406 commercial accounts paid a delivery-only average of 11.78¢ per kWh, and 1,416 industrial accounts 9.11¢ per kWh1.
Where Eversource delivers
EIA's 2025 service-territory records place Eversource in 11 Massachusetts counties: Barnstable County, Berkshire County, Bristol County, Dukes County, Franklin County, Hampden County, Hampshire County, Middlesex County, Norfolk County, Plymouth County and Suffolk County. In 109 of them at least one other utility also reports customers, so a county or ZIP code does not settle which utility serves a street; Eversource's own service map does. EIA publishes no Boston or Cape Cod price. The Massachusetts page covers the state's other utilities.
Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. EIA-861 2025 service territory: 11 counties. Counts whole counties even where the utility serves only part of one; check the utility's own service-area map for an address.
Show the numbers
| County | Other utilities reporting service |
|---|---|
| Barnstable County | National Grid |
| Berkshire County | National Grid, Town of Chester |
| Bristol County | National Grid, City of Taunton, Town of North Attleborough, Town of Mansfield |
| Dukes County | none |
| Franklin County | National Grid |
| Hampden County | National Grid, City of Chicopee, City of Westfield, City of Holyoke, Town of Chester, City of Russell |
| Hampshire County | National Grid, Town of South Hadley |
| Middlesex County | National Grid, Town of Reading, Fitchburg Gas & Electric Light Co, Town of Wakefield, Town of Belmont, Town of Hudson, Town of Concord, Town of Littleton, Town of Groton |
| Norfolk County | National Grid, Town of Braintree, City of Norwood, Town of Wellesley |
| Plymouth County | National Grid, Town of Middleborough, City of Hingham, Hull Municipal Light Plant |
| Suffolk County | National Grid |
Eversource Massachusetts questions
Is NSTAR the same as Eversource?
Yes. Eversource's Massachusetts electric utility is legally NSTAR Electric Company, EIA utility number 54913. Every figure on this page is EIA's figure for that company in Massachusetts.
How much does Eversource charge per kWh in Massachusetts?
Full-service residential customers paid an average of 21.49¢ per kWh in 2025 and 19.73¢ per kWh2 over the last 12 months (September 2025 to August 2026, 2026 months preliminary). These are averages of everything billed divided by kWh, not a tariff rate, and they cover only the homes that bought supply from Eversource. Homes with a supplier paid Eversource 20.06¢ per kWh1 for delivery alone in 2025, plus their supplier's charge.
What is the average Eversource electric bill in Massachusetts?
$101.86 a month in 2025 for full-service homes using 474 kWh1, down from $137.024 in 2024. Over the last 12 months (September 2025 to August 2026) EIA's monthly data put it at $97.75, with the highest monthly average, $122.38, in January 20262.
Did Eversource rates go up in 2026?
In August 20263, the latest month EIA has published, Eversource's full-service residential average was 20.85¢ per kWh, +6.1% on August 2025 (preliminary). One month is not a trend: the 12-month average to August 2026 was 19.73¢ per kWh2, below the 2025 annual figure.
Related pages
Sources
- EIA-861 annual electric power industry report, 2025 final; table Sales_Ult_Cust_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861M monthly sales and revenue by utility; table sales_ult_cust_2025 and _2026; released October 23, 2026. www.eia.gov
- EIA, Electric Power Monthly / EIA-861M sales and revenue by state; table sales_revenue.xlsx (EPM Table 5.6.A); January 2001 to 2026-08; months since January 2026 preliminary; released October 23, 2026. www.eia.gov
- EIA-861 annual electric power industry report, 2024 final; table Sales_Ult_Cust_2024; 2024, final (file updated December 3, 2025); released December 3, 2025. www.eia.gov
- EIA, Historical state data, annual sales, revenue and customers; table HS861 2010-.xlsx; 2010-2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, average monthly bill by state; table Average_Bill_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, advanced meters, dynamic pricing and net metering; table Advanced_Meters, Dynamic_Pricing, Net_Metering 2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, reliability; table Reliability_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, service territory; table Service_Territory_2025; 2025, final; released October 7, 2026. www.eia.gov
- Census Bureau, Cartographic boundary file, counties; table cb_2025_us_county_5m; cb_2021_us_county_5m; 2025 (2021 for Connecticut). www.census.gov
How every figure is built: methodology. Found an error? Write to [email protected]; corrections are listed on the updates page.