Power Out Map

Investor Owned utility · · MA

NSTAR Electric Company

In 2025, the average NSTAR Electric Company customer in Massachusetts was without power for 113 minutes (1.9 hours), 77% more than the median Massachusetts utility.

Outage minutes per customer 113min 2025, including major storms
Excluding major storm days 66min The everyday reliability of the network
Outages per customer a year 0.81 SAIFI, 2025
Residential price 21.5¢/kWh 2025 · Massachusetts median 16.9¢

Reliability

Minutes in the dark, year by year

Average minutes without power per customer in Massachusetts (SAIDI), with and without major event days, against the median Massachusetts utility.

0 200 400 600 800 1,000 1,200 20182019202020212022202320242025 All days 113 No major storms 66 MA median 64

Price

Residential cents per kWh

Revenue from full-service residential customers divided by their sales, as reported to the EIA.

0.0 10.0 20.0 30.0 40.0 20182019202020212022202320242025 This utility 21.5 MA median 16.9

Territory

Counties served

Counties where NSTAR Electric Company reports customers. Open one for its full outage history.

Massachusetts

BarnstableBerkshireBristolDukesFranklinHampdenHampshireMiddlesexNorfolkPlymouthSuffolk

Source: U.S. Energy Information Administration, Form EIA-861, 2018–2025. Reliability uses the IEEE 1366 standard where the utility reports it. Residential customers in 2025: 1,274,856.