NSTAR Electric Company: average rate and electric bill (2025)
NSTAR Electric Company (investor-owned utility, Massachusetts) served 306,795 homes in 2025. The average customer used 474 kWh a month and paid $102, an average price of 21.5¢ per kWh including fixed charges, riders and taxes. That is 29% below the Massachusetts average of 30.4¢.
What a bill costs at NSTAR Electric Company's average price
| Monthly usage | Estimated bill |
|---|---|
| 500 kWh | $107 |
| 1,000 kWh | $215 |
| 1,500 kWh | $322 |
The average price spreads fixed monthly charges over all kWh. At low usage your price per kWh is higher, at high usage lower. Your current tariff can differ from the 2025 average, especially after a rate case.
Calculate your bill · Heat pump vs furnace with this rate
Delivery-only customers
968,061 customers of NSTAR Electric Company bought their electricity supply from another provider and paid NSTAR Electric Company only for delivery: an average of 20.1¢/kWh. Their total price is that delivery charge plus their supplier's energy price (Massachusetts average for supplier energy: 15.2¢/kWh).
Compare with other utilities in Massachusetts
| Name | ¢/kWh | Avg. bill |
|---|---|---|
| City of Chicopee | 16.2 | $118 |
| City of Peabody | 16.9 | $121 |
| City of Taunton | 18.8 | $130 |
| Town of Reading | 19.9 | $165 |
| NSTAR Electric Company | 21.5 | $102 |
| Sunrun Inc. | 29.0 | $162 |
| Massachusetts Electric Co | 33.7 | $164 |
Source: U.S. Energy Information Administration, Form EIA-861 annual data 2025 (released October 2026), utility ID 54913. Average price = residential revenue ÷ residential kWh sold; average bill = revenue ÷ customers ÷ 12.