County annual report · FIPS 25023
2018 Plymouth County, MA Power Outage Report
In 2018, customers in Plymouth County, MA went without power for an average of 31.6 hours, a total of 8.9M customer-hours (Massachusetts average 12.6 hours). That ranks 3rd worst of 14 Massachusetts counties and 179th 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 Plymouth 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 09:45 | March 6, 2018 01:00 | 3d 15h | 141,383 | 6.6M |
| 2 | March 12, 2018 12:15 | March 21, 2018 07:45 | 8d 19h | 65,310 | 1.6M |
| 3 | March 6, 2018 03:15 | March 12, 2018 07:30 | 6d 4h | 23,167 | 331K |
| 4 | October 13, 2018 03:00 | October 13, 2018 11:45 | 8h 45m | 11,311 | 17K |
| 5 | January 4, 2018 13:45 | January 6, 2018 04:45 | 1d 15h | 8,770 | 63K |
| 6 | May 23, 2018 20:30 | May 24, 2018 13:15 | 16h 45m | 6,906 | 15K |
| 7 | June 7, 2018 10:00 | June 7, 2018 13:30 | 3h 30m | 5,754 | 5,416 |
| 8 | November 3, 2018 06:00 | November 4, 2018 19:00 | 1d 13h | 4,857 | 16K |
| 9 | November 16, 2018 02:15 | November 17, 2018 00:45 | 22h 30m | 4,786 | 28K |
| 10 | July 5, 2018 19:15 | July 7, 2018 01:15 | 1d 6h | 4,352 | 47K |
Outage episodes by size in 2018: 218 reached 100+ customers, 52 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 Plymouth 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 Hingham - (MA) | - | - | - | - | - |
| Hull Municipal Light Plant | - | - | - | - | - |
| Town of Middleborough - (MA) | - | - | - | - | - |
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 ÷ 281,672 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. Plymouth County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Plymouth 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/plymouth-county