Electricity rates in Massachusetts: 30.43¢ per kWh
Homes in Massachusetts paid an average of 30.43¢ per kilowatt-hour from August 2025 to July 2026, 69% above the U.S. average of 17.99¢. That is the 3rd-highest of 51, between California (32.99¢) and Maine (29.31¢).
The average Massachusetts home used 599 kWh a month — the 8th-least of the 51 — so its typical bill came to $182 a month, the 5th-highest. At the national rate the same 599 kWh would cost $75 less a month.
In July 2026, the latest month published, the Massachusetts rate was 30.49¢.
| Rank | State | Average rate | Latest month | Average home use | Average bill |
|---|---|---|---|---|---|
| 1 | Hawaii | 43.51¢ | 48.00¢ | 514 kWh/mo | $224/mo |
| 2 | California | 32.99¢ | 33.61¢ | 488 kWh/mo | $161/mo |
| 3 | Massachusetts | 30.43¢ | 30.49¢ | 599 kWh/mo | $182/mo |
| 4 | Maine | 29.31¢ | 32.41¢ | 532 kWh/mo | $156/mo |
| 5 | Rhode Island | 29.27¢ | 28.29¢ | 560 kWh/mo | $164/mo |
What a month of electricity costs in Massachusetts
At 30.43¢ per kWh, every extra 100 kWh a month adds $30.43 to the monthly bill and $365 to the year. The table runs from half to twice the Massachusetts average home's 599 kWh, using the same calculation as the calculator above.
| Monthly use | Per month | Per year | vs. U.S. rate (17.99¢) |
|---|---|---|---|
| 300 kWh (half the average) | $91 | $1,095 | +$37 |
| 599 kWh (state average) | $182 | $2,187 | +$75 |
| 900 kWh (1.5× the average) | $274 | $3,286 | +$112 |
| 1,200 kWh (twice the average) | $365 | $4,382 | +$149 |
Massachusetts electricity through the year
The average Massachusetts home's bill peaked at about $225 in July 2026 and was lowest, about $137, in May 2026. Use ran from 474 kWh in May 2026 to 738 kWh in July 2026, 1.6 times as much.
The rate moved too, from 28.82¢ in May 2026 to 31.37¢ in October 2025. A monthly rate includes that month's fuel and seasonal charges, which is why the calculator uses the 12-month average for a yearly estimate.
| Month | Rate | Use per home | Bill per home |
|---|---|---|---|
| Aug 2025 | 30.61¢ | 717 kWh | $219 |
| Sep 2025 | 30.41¢ | 545 kWh | $166 |
| Oct 2025 | 31.37¢ | 494 kWh | $155 |
| Nov 2025 | 31.22¢ | 487 kWh | $152 |
| Dec 2025 | 30.88¢ | 642 kWh | $198 |
| Jan 2026 | 31.16¢ | 717 kWh | $223 |
| Feb 2026 | 30.46¢ | 705 kWh | $215 |
| Mar 2026 | 30.21¢ | 594 kWh | $179 |
| Apr 2026 | 29.45¢ | 491 kWh | $145 |
| May 2026 | 28.82¢ | 474 kWh | $137 |
| Jun 2026 | 29.61¢ | 576 kWh | $171 |
| Jul 2026 | 30.49¢ | 738 kWh | $225 |
Largest electricity providers in Massachusetts
Among the 10 largest providers listed, average residential rates in 2024 ran from 14.27¢ at Town of Shrewsbury to 33.60¢ at Massachusetts Electric Co. On the average Massachusetts home's 599 kWh that is a difference of $116 a month.
These are 2024 figures, the latest final year. The Massachusetts average was 29.35¢ that year and 30.43¢ over the last 12 months, up 4% — compare the providers with each other, not with today's average.
These providers serve 37% of Massachusetts's 2,924,535 residential customers. Many of the rest buy their power from a separate supplier while the local utility delivers it, so no single company's revenue covers their whole bill.
| Provider | Type | Homes served | Average rate | Use per home |
|---|---|---|---|---|
| Massachusetts Electric Co | Investor-owned | 526,437 | 33.60¢ | 492 kWh/mo |
| NSTAR Electric Company | Investor-owned | 383,373 | 29.91¢ | 458 kWh/mo |
| City of Taunton | Municipal | 35,684 | 21.46¢ | 622 kWh/mo |
| Town of Reading | Municipal | 27,405 | 15.86¢ | 789 kWh/mo |
| City of Chicopee | Municipal | 23,218 | 16.16¢ | 699 kWh/mo |
| City of Peabody | Municipal | 22,546 | 15.71¢ | 715 kWh/mo |
| City of Westfield | Municipal | 16,200 | 17.59¢ | 668 kWh/mo |
| Town of Shrewsbury | Municipal | 15,713 | 14.27¢ | 731 kWh/mo |
| City of Holyoke | Municipal | 15,040 | 16.58¢ | 599 kWh/mo |
| Town of Middleborough | Municipal | 14,884 | 15.84¢ | 792 kWh/mo |