County annual report · FIPS 25015
2025 Hampshire County, MA Power Outage Report
In 2025, customers in Hampshire County, MA went without power for an average of 3.5 hours, a total of 353K customer-hours (Massachusetts average 2.8 hours). That ranks 6th worst of 14 Massachusetts counties and 1916th 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 Hampshire 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 | May 3, 2025 20:30 | May 5, 2025 04:15 | 1d 7h | 8,149 | 117K |
| 2 | July 1, 2025 14:00 | July 2, 2025 07:45 | 17h 45m | 5,742 | 13K |
| 3 | August 15, 2025 13:30 | August 15, 2025 17:15 | 3h 45m | 5,677 | 1,670 |
| 4 | May 23, 2025 15:30 | May 23, 2025 16:00 | 30m | 5,484 | 2,742 |
| 5 | September 6, 2025 18:45 | September 8, 2025 02:15 | 1d 7h | 5,381 | 19K |
| 6 | May 20, 2025 19:00 | May 20, 2025 20:00 | 1h | 4,875 | 3,745 |
| 7 | August 21, 2025 10:15 | August 21, 2025 18:00 | 7h 45m | 3,669 | 2,542 |
| 8 | December 24, 2025 14:30 | December 24, 2025 18:45 | 4h 15m | 3,569 | 6,967 |
| 9 | August 22, 2025 04:00 | August 22, 2025 09:30 | 5h 30m | 3,564 | 19K |
| 10 | November 28, 2025 16:45 | November 28, 2025 18:15 | 1h 30m | 2,993 | 2,204 |
Outage episodes by size in 2025: 121 reached 100+ customers, 31 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 Hampshire 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 |
| Town of South Hadley - (MA) | 2018 | 15 min | 0.18 | 15 min | 0.18 |
| University of Massachusetts Amherst | - | - | - | - | - |
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 ÷ 101,974 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. Hampshire County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hampshire 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/hampshire-county