County annual report · FIPS 25005
2017 Bristol County, MA Power Outage Report
In 2017, customers in Bristol County, MA went without power for an average of 4.0 hours, a total of 1.1M customer-hours (Massachusetts average 4.7 hours). That ranks 7th worst of 14 Massachusetts counties and 1122nd of 2,786 nationally.
Compared with MA, the US and 2016
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Bristol County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 29, 2017 22:15 | November 4, 2017 02:30 | 5d 4h | 37,579 | 881K |
| 2 | May 12, 2017 19:45 | May 13, 2017 10:00 | 14h 15m | 20,527 | 27K |
| 3 | April 12, 2017 12:30 | April 12, 2017 19:15 | 6h 45m | 11,021 | 2,808 |
| 4 | June 20, 2017 15:30 | June 21, 2017 01:30 | 10h | 4,194 | 3,861 |
| 5 | September 21, 2017 05:30 | September 23, 2017 01:45 | 1d 20h | 3,925 | 21K |
| 6 | February 25, 2017 11:15 | February 25, 2017 16:45 | 5h 30m | 3,251 | 2,730 |
| 7 | September 20, 2017 10:15 | September 21, 2017 04:00 | 17h 45m | 3,203 | 4,025 |
| 8 | December 25, 2017 08:45 | December 26, 2017 03:45 | 19h | 2,819 | 15K |
| 9 | July 24, 2017 14:30 | July 24, 2017 19:15 | 4h 45m | 2,728 | 2,050 |
| 10 | May 16, 2017 18:15 | May 16, 2017 20:15 | 2h | 2,553 | 1,429 |
Outage episodes by size in 2017: 158 reached 100+ customers, 44 reached 1,000+ customers, 3 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 2017, 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 | 2017 | 3.4 hrs | 1.04 | 74 min | 0.07 |
| City of Taunton | 2017 | 67 min | 2.53 | 67 min | 2.53 |
| Town of Mansfield - (MA) | 2016 | 13 min | 0.48 | 13 min | 0.48 |
| Town of North Attleborough - (MA) | 2017 | 88 min | 0.32 | 13 min | 0.15 |
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 2017; 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, 2017, 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/2017/massachusetts/bristol-county