County annual report · FIPS 25005
2018 Bristol County, MA Power Outage Report
In 2018, customers in Bristol County, MA went without power for an average of 12.4 hours, a total of 3.5M customer-hours (Massachusetts average 12.6 hours). That ranks 7th worst of 14 Massachusetts counties and 446th of 2,798 nationally.
Compared with MA, the US and 2017
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Bristol County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 2, 2018 10:00 | March 6, 2018 01:00 | 3d 15h | 71,353 | 2.8M |
| 2 | March 13, 2018 10:45 | March 18, 2018 08:15 | 4d 21h | 19,219 | 249K |
| 3 | November 16, 2018 00:15 | November 16, 2018 22:30 | 22h 15m | 10,025 | 19K |
| 4 | March 6, 2018 03:15 | March 12, 2018 08:00 | 6d 4h | 10,012 | 121K |
| 5 | December 21, 2018 12:45 | December 22, 2018 04:15 | 15h 30m | 7,903 | 19K |
| 6 | April 17, 2018 10:15 | April 17, 2018 15:15 | 5h | 6,308 | 1,702 |
| 7 | October 28, 2018 09:45 | October 28, 2018 20:45 | 11h | 4,390 | 4,724 |
| 8 | June 13, 2018 22:15 | June 14, 2018 06:15 | 8h | 4,066 | 1,149 |
| 9 | January 1, 2018 03:30 | January 1, 2018 06:00 | 2h 30m | 3,902 | 4,869 |
| 10 | August 29, 2018 12:30 | August 30, 2018 02:45 | 14h 15m | 3,885 | 4,965 |
Outage episodes by size in 2018: 185 reached 100+ customers, 61 reached 1,000+ customers, 4 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 2018, 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 | 2018 | 16.2 hrs | 1.68 | 85 min | 0.83 |
| City of Taunton | 2018 | 4.5 hrs | 5.10 | 81 min | 2.66 |
| Town of Mansfield - (MA) | 2018 | 12 min | 0.17 | 6 min | 0.07 |
| Town of North Attleborough - (MA) | 2018 | 4.5 hrs | 0.67 | 12 min | 0.16 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Massachusetts's customers in 2018; 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, 2018, 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/2018/massachusetts/bristol-county