massoutage

2021 Massachusetts Power Outage Report

In 2021, the average Massachusetts customer went without power for about 7.4 hours — the 13th worst of any US state that year, 1.6× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
7.4
Peak customers out
351,202
Rank (worst state)
13th
Counties affected
14

Massachusetts outages over the decade

Average hours without power per customer, 2021 highlighted.

1.5h20152.3h20164.7h201712.6h20183.0h20195.3h20207.4h20213.3h20225.1h20231.9h20242.8h2025

Hardest-hit Massachusetts counties in 2021

By peak customers out during the year's worst event.

1Plymouth County351,2022Barnstable County273,6343Norfolk County126,7404Bristol County105,2185Essex County43,0486Worcester County22,2707Middlesex County14,5558Dukes County13,8549Hampshire County13,54310Suffolk County8,26411Berkshire County7,11512Hampden County6,97813Franklin County5,29914Nantucket County1,886

Biggest Massachusetts outages of 2021

CountyBeganPeak customers out
Plymouth CountyOctober 26, 2021351,202
Barnstable CountyOctober 26, 2021273,634
Norfolk CountyOctober 26, 2021126,740
Plymouth CountyOctober 28, 2021125,477
Bristol CountyOctober 27, 2021105,218
Barnstable CountyOctober 28, 202192,294
Essex CountyOctober 26, 202143,048
Norfolk CountyOctober 28, 202123,696
Worcester CountyMarch 26, 202122,270
Bristol CountyOctober 28, 202120,256
Massachusetts by year:20252024202320222020201920182017
Other states in 2021:LAMIWVTXORMS

Part of the 2021 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.