Official EIA-861 State Grid Summary
Massachusetts Power Outage Risk, Electric Utilities & Generator Sizing
Massachusetts households average 1.7 hrs/yr (102 minutes/year) of total blackout duration across 0.84 outages/year (Reliability Grade A — Low Outage Risk), with an average residential electricity rate of 29.36 ¢/kWh.
Interactive Appliance Load Calculator
⚡ Home Backup Wattage Sizer for Massachusetts
Check the appliances you need to keep running during a blackout. We calculate your continuous running watts, highest motor starting surge, and 20% NEC safety headroom automatically.
Live Sizing Result (+20% Headroom)
3,000 W
Recommended Minimum Generator / Inverter Rating
1,250 WContinuous Running
2,250 WPeak Motor Surge
Top Cities & Towns in Massachusetts
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Electric Utilities Operating in Massachusetts (EIA Form 861)
| Utility Name | Ownership | Customers | Outages/Yr | Annual Outage Time | Avg Restoration | Residential Rate |
|---|---|---|---|---|---|---|
| NSTAR Electric Company (#54913) | Investor-Owned | 919,703 | 0.69x/yr | 81 min (1.3h) | 116 min | 16.27 ¢/kWh |
| Massachusetts Electric Co (#11804) | Investor-Owned | 683,676 | 1.00x/yr | 134 min (2.2h) | 134 min | 16.30 ¢/kWh |
| Direct Energy Services (#54820) | Retail Power Marketer | 498,718 | 0.84x/yr | 102 min (1.7h) | 121 min | 15.14 ¢/kWh |
| Constellation NewEnergy, Inc (#13374) | Retail Power Marketer | 291,382 | 0.84x/yr | 102 min (1.7h) | 121 min | 15.50 ¢/kWh |
| Dynegy Energy Services, LLC (#59385) | Retail Power Marketer | 189,517 | 0.84x/yr | 102 min (1.7h) | 121 min | 14.25 ¢/kWh |
| First Point Power, LLC (#59793) | Retail Power Marketer | 162,849 | 0.84x/yr | 102 min (1.7h) | 121 min | 13.76 ¢/kWh |
| NextEra Energy Services, LLC (#7279) | Retail Power Marketer | 145,990 | 0.84x/yr | 102 min (1.7h) | 121 min | 14.11 ¢/kWh |
| Inspire Energy Holdings, LLC (#59310) | Retail Power Marketer | 63,980 | 0.84x/yr | 102 min (1.7h) | 121 min | 19.90 ¢/kWh |
| Reliant Energy Northeast LLC (#57037) | Retail Power Marketer | 53,585 | 0.84x/yr | 102 min (1.7h) | 121 min | 18.37 ¢/kWh |
| CleanChoice Energy, Inc. (#58951) | Retail Power Marketer | 36,276 | 0.84x/yr | 102 min (1.7h) | 121 min | 21.19 ¢/kWh |
| City of Taunton (#18488) | Municipal | 35,684 | 2.37x/yr | 193 min (3.2h) | 82 min | 21.46 ¢/kWh |
| Town of Reading - (MA) (#15748) | Municipal | 27,405 | 0.66x/yr | 46 min (0.8h) | 70 min | 15.86 ¢/kWh |
| Clearview Electric Inc. (#58974) | Retail Power Marketer | 23,822 | 0.84x/yr | 102 min (1.7h) | 121 min | 15.43 ¢/kWh |
| City of Chicopee - (MA) (#3477) | Municipal | 23,218 | 0.21x/yr | 10 min (0.2h) | 50 min | 16.16 ¢/kWh |
| City of Peabody - (MA) (#14605) | Municipal | 22,546 | 0.84x/yr | 102 min (1.7h) | 121 min | 15.71 ¢/kWh |
| Fitchburg Gas & Elec Light Co (#6374) | Investor-Owned | 20,122 | 1.05x/yr | 65 min (1.1h) | 62 min | 19.23 ¢/kWh |
| SmartEnergy Holdings, LLC (#58956) | Retail Power Marketer | 18,349 | 0.84x/yr | 102 min (1.7h) | 121 min | 17.58 ¢/kWh |
| Residents Energy, LLC (#59809) | Retail Power Marketer | 18,268 | 0.84x/yr | 102 min (1.7h) | 121 min | 19.44 ¢/kWh |
| Town Square Energy (#59059) | Retail Power Marketer | 16,268 | 0.84x/yr | 102 min (1.7h) | 121 min | 15.14 ¢/kWh |
| City of Westfield - (MA) (#20481) | Municipal | 16,200 | 1.74x/yr | 123 min (2.0h) | 70 min | 17.59 ¢/kWh |
| Town of Shrewsbury - (MA) (#17127) | Municipal | 15,713 | 0.36x/yr | 17 min (0.3h) | 46 min | 14.27 ¢/kWh |
| City of Holyoke - (MA) (#8774) | Municipal | 15,040 | 1.26x/yr | 62 min (1.0h) | 49 min | 16.58 ¢/kWh |
| Town of Middleborough - (MA) (#12473) | Municipal | 14,884 | 0.66x/yr | 19 min (0.3h) | 29 min | 15.84 ¢/kWh |
| Town of Braintree - (MA) (#2144) | Municipal | 14,039 | 0.04x/yr | 2 min (0.0h) | 63 min | 15.79 ¢/kWh |
| Town of Wakefield - (MA) (#19979) | Municipal | 13,663 | 0.84x/yr | 102 min (1.7h) | 121 min | 20.72 ¢/kWh |
| City of Norwood - (MA) (#13839) | Municipal | 13,601 | 0.85x/yr | 64 min (1.1h) | 75 min | 17.67 ¢/kWh |
| Town of North Attleborough - (MA) (#13679) | Municipal | 12,607 | 0.09x/yr | 6 min (0.1h) | 67 min | 15.91 ¢/kWh |
| Town of Belmont - (MA) (#1523) | Municipal | 11,845 | 0.84x/yr | 102 min (1.7h) | 121 min | 24.49 ¢/kWh |
| Town of Danvers (#5480) | Municipal | 11,594 | 0.10x/yr | 18 min (0.3h) | 180 min | 16.45 ¢/kWh |
| Town of Hudson - (MA) (#8973) | Municipal | 11,448 | 1.14x/yr | 78 min (1.3h) | 68 min | 13.39 ¢/kWh |
| Nantucket Electric Co (#13206) | Investor-Owned | 10,768 | 0.72x/yr | 138 min (2.3h) | 192 min | 18.08 ¢/kWh |
| City of Hingham - (MA) (#8796) | Municipal | 10,175 | 0.84x/yr | 102 min (1.7h) | 121 min | 16.95 ¢/kWh |
| Town of Marblehead - (MA) (#11624) | Municipal | 10,160 | 0.84x/yr | 102 min (1.7h) | 121 min | 21.56 ¢/kWh |
| Titan Gas LLC (#59065) | Retail Power Marketer | 9,543 | 0.84x/yr | 102 min (1.7h) | 121 min | 18.30 ¢/kWh |
| Town of Wellesley - (MA) (#20310) | Municipal | 9,437 | 0.13x/yr | 8 min (0.1h) | 61 min | 16.20 ¢/kWh |