County annual report · FIPS 25005
2015 Bristol County, MA Power Outage Report
In 2015, customers in Bristol County, MA went without power for an average of 0.7 hours, a total of 201K customer-hours (Massachusetts average 1.5 hours). That ranks 13th worst of 14 Massachusetts counties and 1944th 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 Bristol 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 | August 4, 2015 11:00 | August 4, 2015 17:45 | 6h 45m | 12,232 | 53K |
| 2 | May 6, 2015 19:30 | May 6, 2015 22:00 | 2h 30m | 4,697 | 3,452 |
| 3 | August 4, 2015 18:30 | August 5, 2015 03:15 | 8h 45m | 4,495 | 14K |
| 4 | May 31, 2015 17:30 | June 1, 2015 04:00 | 10h 30m | 3,565 | 7,999 |
| 5 | November 21, 2015 15:30 | November 21, 2015 19:00 | 3h 30m | 2,903 | 1,565 |
| 6 | March 16, 2015 00:45 | March 16, 2015 20:45 | 20h | 2,584 | 7,502 |
| 7 | September 3, 2015 11:15 | September 3, 2015 20:45 | 9h 30m | 2,386 | 1,562 |
| 8 | September 10, 2015 13:00 | September 11, 2015 10:15 | 21h 15m | 2,114 | 3,616 |
| 9 | December 4, 2015 13:00 | December 5, 2015 03:15 | 14h 15m | 2,079 | 1,214 |
| 10 | April 22, 2015 21:00 | April 23, 2015 03:00 | 6h | 2,059 | 2,545 |
Outage episodes by size in 2015: 122 reached 100+ customers, 31 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 Bristol 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 |
| Town of Mansfield - (MA) | 2015 | 10 min | 0.08 | 10 min | 0.08 |
| Town of North Attleborough - (MA) | 2015 | 13 min | 0.17 | 8 min | 0.10 |
| City of Taunton | - | - | - | - | - |
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 ÷ 284,254 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. Bristol County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Bristol 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/bristol-county