County annual report · FIPS 23019
2021 Penobscot County, ME Power Outage Report
In 2021, customers in Penobscot County, ME went without power for an average of 4.5 hours, a total of 399K customer-hours (Maine average 6.4 hours). That ranks 12th worst of 16 Maine counties and 1434th 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 Penobscot 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 | October 2, 2021 05:00 | October 2, 2021 09:45 | 4h 45m | 14,383 | 51K |
| 2 | July 8, 2021 11:30 | July 8, 2021 18:15 | 6h 45m | 9,610 | 17K |
| 3 | October 3, 2021 17:15 | October 3, 2021 19:30 | 2h 15m | 7,642 | 11K |
| 4 | December 17, 2021 13:30 | December 17, 2021 19:00 | 5h 30m | 7,595 | 4,239 |
| 5 | December 22, 2021 12:45 | December 22, 2021 16:00 | 3h 15m | 7,541 | 2,110 |
| 6 | July 7, 2021 18:15 | July 8, 2021 04:00 | 9h 45m | 7,175 | 5,225 |
| 7 | May 16, 2021 18:45 | May 16, 2021 21:00 | 2h 15m | 5,469 | 4,488 |
| 8 | July 2, 2021 08:15 | July 2, 2021 21:15 | 13h | 5,382 | 38K |
| 9 | October 22, 2021 08:15 | October 22, 2021 17:00 | 8h 45m | 5,162 | 2,275 |
| 10 | February 2, 2021 15:15 | February 3, 2021 00:15 | 9h | 4,968 | 2,724 |
Outage episodes by size in 2021: 168 reached 100+ customers, 46 reached 1,000+ customers, 1 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 Penobscot 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 |
| Versant Power | 2021 | 5.1 hrs | 2.35 | 3.6 hrs | 1.97 |
| Eastern Maine Electric Coop | 2021 | 8.3 hrs | 5.11 | 8.3 hrs | 5.11 |
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 ÷ 88,128 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. Penobscot County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Penobscot 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/penobscot-county