County annual report · FIPS 25023
2023 Plymouth County, MA Power Outage Report
In 2023, customers in Plymouth County, MA went without power for an average of 7.5 hours, a total of 2.1M customer-hours (Massachusetts average 5.1 hours). That ranks 5th worst of 14 Massachusetts counties and 1080th of 2,977 nationally.
Compared with MA, the US and 2022
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Plymouth County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 18, 2023 08:45 | December 22, 2023 07:15 | 3d 22h | 64,953 | 1.8M |
| 2 | February 3, 2023 14:45 | February 5, 2023 02:45 | 1d 12h | 23,890 | 40K |
| 3 | August 17, 2023 16:00 | August 17, 2023 17:00 | 1h | 12,034 | 9,028 |
| 4 | November 22, 2023 11:15 | November 23, 2023 00:15 | 13h | 5,595 | 7,126 |
| 5 | June 14, 2023 23:15 | June 16, 2023 00:30 | 1d 1h | 5,268 | 15K |
| 6 | December 11, 2023 07:45 | December 12, 2023 03:45 | 20h | 5,089 | 18K |
| 7 | May 13, 2023 13:00 | May 14, 2023 00:30 | 11h 30m | 4,729 | 4,655 |
| 8 | April 30, 2023 11:00 | April 30, 2023 13:15 | 2h 15m | 3,532 | 7,945 |
| 9 | May 20, 2023 16:30 | May 21, 2023 03:15 | 10h 45m | 3,452 | 8,792 |
| 10 | December 4, 2023 10:15 | December 4, 2023 19:30 | 9h 15m | 3,202 | 3,290 |
Outage episodes by size in 2023: 155 reached 100+ customers, 45 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 Plymouth County reported on EIA Form 861 for 2023, 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 | 2023 | 5.8 hrs | 1.16 | 1.6 hrs | 0.84 |
| NSTAR Electric Company | 2023 | 3.2 hrs | 0.88 | 76 min | 0.67 |
| 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 n/a of Massachusetts's customers in 2023; 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, 2023, 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/2023/massachusetts/plymouth-county