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NSTAR Electric Company
NSTAR Electric Company served 968,061 residential customers in Massachusetts in 2025 (33.2% of the state's residential customers), the 1st largest of 59 utilities reporting there. Delivery-only service; ownership: investor owned; balancing authority ISNE.
The meter, one average month.
Scroll to run 30 days of NSTAR Electric Company's average residential use through a five-dial register.
- Used so far
- 571 kWh
- At 20.06¢/kWh
- $115
Price ruler0 to 50¢ per kWh
Where 20.06¢ sits.
This page covers delivery-only service, which is only part of a household's bill, so its 20.06¢ is not compared with the Massachusetts bundled average of 30.48¢. Both are drawn for scale only.
2020 and 2025EIA-861
Five years, same meter.
In 2020 the average NSTAR Electric Company home used 568 kWh a month at 11.15¢ and paid $63.37. In 2025 it used 571 kWh at 20.06¢ and paid $115: the price per kWh is up 79.9%.
| Measure | 2020 | 2025 |
|---|---|---|
| Price, ¢/kWh | 11.15 | 20.06 |
| Use, kWh a month | 568 | 571 |
| Bill, US$ a month | 63.37 | 114.6 |
| Class | Customers | MWh sold | ¢/kWh |
|---|---|---|---|
| Residential | 968,061 | 6,637,763 | 20.06 |
| Commercial | 173,406 | 12,440,413 | 11.78 |
| Industrial | 1,416 | 1,434,177 | 9.11 |
| Transportation | 1 | 299,821 | 1.23 |
Who else is on the line
Homes are one class.
Homes took 31.9% of the electricity NSTAR Electric Company sold in Massachusetts in 2025.
Rooftop solar on its linesnet metering
89,475 roofs.
- Residential net-metered PV
- 89,475installations reported for 2025
- Capacity
- 651.4 MWresidential, net metered
- Per 1,000 homes
- 92.4installations per 1,000 residential customers
Service territoryEIA-861
11 counties.
BarnstableBerkshireBristolDukesFranklinHampdenHampshireMiddlesexNorfolkPlymouthSuffolk
Counties in Massachusetts where NSTAR Electric Company reported serving customers in 2025 (11 in all; up to 24 listed).
EIA-8612025Utility 54913
The filing, line by line.
| Measure | Value | Unit |
|---|---|---|
| Average price | 20.06 | ¢/kWh |
| Massachusetts average price | 30.48 | ¢/kWh |
| Price change over 5 years | 79.9 | % |
| Typical monthly use | 571 | kWh |
| Typical monthly bill | 114.6 | US$ |
| Residential customers | 968,061 | accounts |
| Share of MA residential customers | 33.2 | % |
| Size rank in MA | 1 of 59 | by customers |
Rate plans on fileOpenEI URDB
None shown for this page. Plan counts appear once per utility, on its largest state's bundled page; how plans are counted.
Massachusetts: state average, five-year steps and every provider