County annual report · FIPS 23025
2021 Somerset County, ME Power Outage Report
In 2021, customers in Somerset County, ME went without power for an average of 13.5 hours, a total of 264K customer-hours (Maine average 6.4 hours). That ranks 4th worst of 16 Maine counties and 618th of 2,974 nationally.
Compared with ME, the US and 2020
Coverage line is EAGLE-I's share of Maine customers tracked each year.
Biggest outages in Somerset County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 6, 2021 20:45 | September 7, 2021 05:30 | 8h 45m | 4,874 | 9,624 |
| 2 | March 2, 2021 03:45 | March 4, 2021 18:30 | 2d 14h | 4,420 | 51K |
| 3 | March 29, 2021 12:30 | March 30, 2021 23:15 | 1d 10h | 4,398 | 41K |
| 4 | August 14, 2021 18:00 | August 15, 2021 03:15 | 9h 15m | 3,613 | 4,538 |
| 5 | June 19, 2021 19:15 | June 20, 2021 23:00 | 1d 3h | 3,327 | 21K |
| 6 | October 27, 2021 00:00 | October 28, 2021 01:30 | 1d 1h | 2,688 | 4,544 |
| 7 | April 26, 2021 14:15 | April 26, 2021 17:00 | 2h 45m | 2,414 | 1,515 |
| 8 | April 3, 2021 14:30 | April 3, 2021 16:00 | 1h 30m | 2,413 | 2,414 |
| 9 | December 11, 2021 17:00 | December 12, 2021 20:30 | 1d 3h | 2,373 | 9,223 |
| 10 | December 7, 2021 00:00 | December 7, 2021 14:15 | 14h 15m | 2,242 | 4,158 |
Outage episodes by size in 2021: 84 reached 100+ customers, 32 reached 1,000+ customers, 0 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 Somerset County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Central Maine Power Co | 2021 | 5.5 hrs | 2.48 | 3.7 hrs | 2.04 |
| Town of Madison - (ME) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 96% of Maine's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 19,524 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. Somerset County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Somerset County, ME annual power outage report, 2021, 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/2021/maine/somerset-county