County annual report · FIPS 24039
2021 Somerset County, MD Power Outage Report
In 2021, customers in Somerset County, MD went without power for an average of 0.9 hours, a total of 13K customer-hours (Maryland average 2.5 hours). That ranks 22nd worst of 24 Maryland counties and 2683rd of 2,974 nationally.
Compared with MD, the US and 2020
Coverage line is EAGLE-I's share of Maryland 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 | May 29, 2021 02:15 | May 29, 2021 04:00 | 1h 45m | 704 | 1,231 |
| 2 | June 1, 2021 15:45 | June 1, 2021 17:00 | 1h 15m | 647 | 417 |
| 3 | September 1, 2021 13:45 | September 1, 2021 14:15 | 30m | 579 | 146 |
| 4 | September 15, 2021 15:15 | September 15, 2021 15:45 | 30m | 577 | 145 |
| 5 | May 10, 2021 04:45 | May 10, 2021 07:00 | 2h 15m | 367 | 746 |
| 6 | May 27, 2021 17:30 | May 27, 2021 21:45 | 4h 15m | 351 | 993 |
| 7 | August 12, 2021 15:15 | August 12, 2021 17:45 | 2h 30m | 337 | 714 |
| 8 | November 27, 2021 05:00 | November 27, 2021 08:00 | 3h | 281 | 186 |
| 9 | September 12, 2021 23:00 | September 13, 2021 02:00 | 3h | 210 | 596 |
| 10 | June 12, 2021 04:30 | June 12, 2021 07:45 | 3h 15m | 184 | 193 |
Outage episodes by size in 2021: 16 reached 100+ customers, 0 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 |
|---|---|---|---|---|---|
| Delmarva Power | 2021 | 63 min | 0.82 | 63 min | 0.82 |
| Choptank Electric Cooperative, Inc | 2021 | 1.7 hrs | 1.20 | 1.7 hrs | 1.20 |
| A & N Electric Coop | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 14,318 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 2015–2025.
Cite this report
MassOutage (massoutage.com), Somerset County, MD 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/maryland/somerset-county