County annual report · FIPS 25003
2021 Berkshire County, MA Power Outage Report
In 2021, customers in Berkshire County, MA went without power for an average of 1.6 hours, a total of 161K customer-hours (Massachusetts average 7.4 hours). That ranks 12th worst of 14 Massachusetts counties and 2400th of 2,974 nationally.
Compared with MA, the US and 2020
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Berkshire County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 27, 2021 21:45 | May 28, 2021 01:00 | 3h 15m | 7,115 | 7,059 |
| 2 | August 12, 2021 19:15 | August 13, 2021 09:30 | 14h 15m | 3,495 | 3,577 |
| 3 | March 29, 2021 07:15 | March 30, 2021 18:45 | 1d 11h | 3,437 | 21K |
| 4 | March 2, 2021 02:30 | March 3, 2021 22:00 | 1d 19h | 2,807 | 14K |
| 5 | July 27, 2021 21:30 | July 29, 2021 16:15 | 1d 18h | 2,762 | 14K |
| 6 | November 27, 2021 04:30 | November 28, 2021 03:30 | 23h | 1,854 | 1,681 |
| 7 | January 16, 2021 11:15 | January 17, 2021 00:30 | 13h 15m | 1,766 | 8,881 |
| 8 | June 30, 2021 20:00 | July 2, 2021 19:45 | 1d 23h | 1,730 | 8,106 |
| 9 | September 16, 2021 20:45 | September 16, 2021 21:30 | 45m | 1,665 | 962 |
| 10 | July 7, 2021 19:15 | July 9, 2021 00:00 | 1d 4h | 1,565 | 3,575 |
Outage episodes by size in 2021: 89 reached 100+ customers, 16 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Berkshire County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Massachusetts Electric Co | 2021 | 7.9 hrs | 1.26 | 1.6 hrs | 0.94 |
| NSTAR Electric Company | 2021 | 10.7 hrs | 1.10 | 76 min | 0.73 |
| AVANGRID | - | - | - | - | - |
| Town of Chester | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Massachusetts's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 99,023 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Berkshire County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Berkshire County, MA annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/massachusetts/berkshire-county