2021 Massachusetts Power Outage Report
In 2021, the average Massachusetts customer went without power for about 7.3 hours, the 13th worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.
Avg hrs / customer
7.3
vs prior year
▲ 37%
vs 2020
Customer-hours out
24.1M
Peak customers out
716,141
across the state at once
EAGLE-I coverage
99%
of MA customers
Counties reporting
14
Massachusetts year over year
Month by month, 2021
Customer-hours without power across Massachusetts; October was the worst.
All 14 Massachusetts counties, 2021
Ranked by average hours without power per customer. Each county links to its annual report.
| # | County | Hrs / customer | Customer-hours | Customers | Peak out | Events |
|---|---|---|---|---|---|---|
| 1 | Barnstable County | 47.5 | 5.6M | 118,437 | 118,437 | 1,028 |
| 2 | Plymouth County | 30.4 | 8.6M | 281,672 | 281,672 | 1,104 |
| 3 | Nantucket County | 17.8 | 12K | 680 | 680 | 164 |
| 4 | Dukes County | 13.1 | 273K | 20,864 | 13,854 | 274 |
| 5 | Norfolk County | 8.7 | 2.8M | 326,357 | 126,740 | 953 |
| 6 | Bristol County | 6.3 | 1.8M | 284,254 | 105,218 | 1,082 |
| 7 | Essex County | 5.9 | 1.3M | 216,314 | 43,048 | 951 |
| 8 | Worcester County | 4.7 | 998K | 212,617 | 22,270 | 940 |
| 9 | Hampden County | 2.8 | 552K | 196,656 | 6,978 | 478 |
| 10 | Middlesex County | 2.5 | 1.1M | 434,426 | 14,555 | 752 |
| 11 | Hampshire County | 1.9 | 194K | 101,974 | 13,543 | 686 |
| 12 | Berkshire County | 1.6 | 161K | 99,023 | 7,115 | 788 |
| 13 | Franklin County | 1.6 | 92K | 57,949 | 5,299 | 588 |
| 14 | Suffolk County | 0.6 | 605K | 947,211 | 8,264 | 838 |
Biggest Massachusetts outages of 2021
Up to 25 county outage episodes with the most customers out at once.
| # | County | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|---|
| 1 | Plymouth County, MA | October 26, 2021 16:15 | October 28, 2021 15:30 | 1d 23h | 281,672 | 4.9M |
| 2 | Norfolk County, MA | October 26, 2021 10:15 | October 28, 2021 15:30 | 2d 5h | 126,740 | 1.7M |
| 3 | Plymouth County, MA | October 28, 2021 20:30 | November 6, 2021 02:30 | 8d 6h | 125,477 | 3.4M |
| 4 | Barnstable County, MA | October 26, 2021 13:00 | October 28, 2021 15:30 | 2d 2h | 118,437 | 3.4M |
| 5 | Bristol County, MA | October 27, 2021 00:30 | October 28, 2021 15:30 | 1d 15h | 105,218 | 1.2M |
| 6 | Barnstable County, MA | October 28, 2021 20:30 | November 1, 2021 06:45 | 3d 10h | 92,294 | 1.9M |
| 7 | Essex County, MA | October 26, 2021 15:45 | October 28, 2021 15:30 | 1d 23h | 43,048 | 595K |
| 8 | Norfolk County, MA | October 28, 2021 20:30 | November 2, 2021 07:30 | 4d 11h | 23,696 | 676K |
| 9 | Worcester County, MA | March 26, 2021 11:15 | March 27, 2021 07:30 | 20h 15m | 22,270 | 43K |
| 10 | Bristol County, MA | October 28, 2021 20:30 | November 2, 2021 03:45 | 4d 7h | 20,256 | 304K |
| 11 | Worcester County, MA | March 1, 2021 19:15 | March 4, 2021 03:15 | 2d 8h | 16,577 | 182K |
| 12 | Middlesex County, MA | December 6, 2021 12:45 | December 8, 2021 01:00 | 1d 12h | 14,555 | 17K |
| 13 | Middlesex County, MA | March 1, 2021 10:30 | March 4, 2021 14:15 | 3d 3h | 14,349 | 157K |
| 14 | Dukes County, MA | October 27, 2021 04:45 | October 28, 2021 15:30 | 1d 10h | 13,854 | 185K |
| 15 | Hampshire County, MA | August 12, 2021 20:15 | August 14, 2021 00:45 | 1d 4h | 13,543 | 52K |
| 16 | Bristol County, MA | September 2, 2021 02:15 | September 3, 2021 07:30 | 1d 5h | 12,438 | 19K |
| 17 | Barnstable County, MA | July 9, 2021 04:45 | July 10, 2021 22:45 | 1d 18h | 12,324 | 55K |
| 18 | Essex County, MA | December 17, 2021 12:30 | December 18, 2021 01:15 | 12h 45m | 11,808 | 4,671 |
| 19 | Essex County, MA | February 1, 2021 21:00 | February 3, 2021 05:15 | 1d 8h | 11,419 | 36K |
| 20 | Worcester County, MA | June 23, 2021 04:30 | June 24, 2021 01:30 | 21h | 11,141 | 15K |
| 21 | Middlesex County, MA | October 25, 2021 19:00 | October 28, 2021 15:30 | 2d 20h | 10,324 | 109K |
| 22 | Worcester County, MA | August 22, 2021 07:30 | August 24, 2021 07:30 | 2d | 10,233 | 68K |
| 23 | Essex County, MA | September 13, 2021 10:00 | September 14, 2021 06:30 | 20h 30m | 10,082 | 12K |
| 24 | Essex County, MA | March 1, 2021 18:00 | March 4, 2021 04:30 | 2d 10h | 9,591 | 92K |
| 25 | Worcester County, MA | October 26, 2021 12:00 | October 28, 2021 15:30 | 2d 3h | 9,452 | 106K |
EAGLE-I tracked about 99% of Massachusetts's electricity customers in 2021; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Part of the 2021 US Power Outage Report.
Data from DOE EAGLE-I, every source we read.