County annual report · FIPS 25003
2015 Berkshire County, MA Power Outage Report
In 2015, customers in Berkshire County, MA went without power for an average of 1.9 hours, a total of 186K customer-hours (Massachusetts average 1.5 hours). That ranks 6th worst of 14 Massachusetts counties and 1293rd of 2,484 nationally.
Compared with MA, the US
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Berkshire County, 2015
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 19, 2015 09:30 | May 19, 2015 13:00 | 3h 30m | 18,171 | 36K |
| 2 | May 27, 2015 20:15 | May 28, 2015 11:45 | 15h 30m | 4,969 | 10K |
| 3 | June 28, 2015 02:00 | June 29, 2015 06:15 | 1d 4h | 4,814 | 10K |
| 4 | October 28, 2015 19:30 | October 29, 2015 14:45 | 19h 15m | 4,665 | 18K |
| 5 | July 26, 2015 21:45 | July 27, 2015 17:45 | 20h | 4,024 | 9,908 |
| 6 | March 25, 2015 12:00 | March 26, 2015 00:15 | 12h 15m | 2,306 | 1,354 |
| 7 | August 10, 2015 17:15 | August 10, 2015 20:00 | 2h 45m | 2,032 | 1,364 |
| 8 | November 7, 2015 17:45 | November 7, 2015 23:00 | 5h 15m | 1,853 | 3,708 |
| 9 | November 8, 2015 03:00 | November 8, 2015 04:15 | 1h 15m | 1,851 | 2,314 |
| 10 | September 30, 2015 09:45 | October 1, 2015 00:45 | 15h | 1,769 | 4,368 |
Outage episodes by size in 2015: 109 reached 100+ customers, 24 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 2015, 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 | 2014 | 2.4 hrs | 1.12 | 1.6 hrs | 0.96 |
| NSTAR Electric Company | 2015 | 1.6 hrs | 0.83 | 75 min | 0.76 |
| 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 2015; 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, 2015, 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/2015/massachusetts/berkshire-county