County annual report · FIPS 25003
2025 Berkshire County, MA Power Outage Report
In 2025, customers in Berkshire County, MA went without power for an average of 2.9 hours, a total of 289K customer-hours (Massachusetts average 2.8 hours). That ranks 9th worst of 14 Massachusetts counties and 2081st of 3,000 nationally.
Compared with MA, the US and 2024
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Berkshire County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 6, 2025 17:15 | September 9, 2025 09:15 | 2d 16h | 10,881 | 86K |
| 2 | March 6, 2025 22:15 | March 8, 2025 03:30 | 1d 5h | 3,655 | 9,649 |
| 3 | May 2, 2025 09:00 | May 2, 2025 19:30 | 10h 30m | 3,384 | 4,320 |
| 4 | June 16, 2025 13:45 | June 16, 2025 14:30 | 45m | 3,334 | 1,667 |
| 5 | May 10, 2025 08:30 | May 10, 2025 15:15 | 6h 45m | 3,096 | 4,748 |
| 6 | May 17, 2025 22:30 | May 18, 2025 06:30 | 8h | 3,010 | 2,108 |
| 7 | February 16, 2025 16:15 | February 19, 2025 03:30 | 2d 11h | 2,539 | 24K |
| 8 | March 16, 2025 18:00 | March 17, 2025 20:45 | 1d 2h | 2,521 | 13K |
| 9 | June 20, 2025 03:15 | June 20, 2025 20:45 | 17h 30m | 2,379 | 13K |
| 10 | August 25, 2025 01:45 | August 25, 2025 07:00 | 5h 15m | 2,090 | 3,387 |
Outage episodes by size in 2025: 128 reached 100+ customers, 25 reached 1,000+ customers, 1 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 2025, 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 | 2024 | 2.2 hrs | 1.00 | 1.5 hrs | 0.84 |
| NSTAR Electric Company | 2024 | 81 min | 0.69 | 66 min | 0.64 |
| 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 n/a of Massachusetts's customers in 2025; 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, 2025, 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/2025/massachusetts/berkshire-county