County annual report · FIPS 54055
2021 Mercer County, WV Power Outage Report
In 2021, customers in Mercer County, WV went without power for an average of 6.0 hours, a total of 227K customer-hours (West Virginia average 21.4 hours). That ranks 46th worst of 55 West Virginia counties and 1160th of 2,974 nationally.
Compared with WV, the US and 2020
Coverage line is EAGLE-I's share of West Virginia customers tracked each year.
Biggest outages in Mercer 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 | February 20, 2021 19:30 | February 21, 2021 04:30 | 9h | 3,486 | 12K |
| 2 | February 7, 2021 14:00 | February 7, 2021 23:15 | 9h 15m | 2,560 | 5,515 |
| 3 | January 31, 2021 09:15 | February 1, 2021 02:30 | 17h 15m | 2,265 | 4,944 |
| 4 | July 26, 2021 22:15 | July 27, 2021 23:15 | 1d 1h | 2,120 | 6,677 |
| 5 | June 6, 2021 19:00 | June 8, 2021 02:30 | 1d 7h | 2,033 | 5,778 |
| 6 | May 13, 2021 10:30 | May 13, 2021 22:45 | 12h 15m | 1,850 | 2,001 |
| 7 | March 18, 2021 19:00 | March 18, 2021 23:15 | 4h 15m | 1,602 | 2,563 |
| 8 | October 25, 2021 13:00 | October 27, 2021 00:45 | 1d 11h | 1,534 | 5,674 |
| 9 | February 17, 2021 12:15 | February 19, 2021 23:45 | 2d 11h | 1,530 | 16K |
| 10 | January 28, 2021 04:00 | January 30, 2021 01:30 | 1d 21h | 1,292 | 11K |
Outage episodes by size in 2021: 83 reached 100+ customers, 16 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 Mercer 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 |
|---|---|---|---|---|---|
| Appalachian Power Co | 2021 | 22.1 hrs | 2.24 | 7.7 hrs | 1.84 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 97% of West Virginia's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 38,077 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. Mercer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mercer County, WV 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/west-virginia/mercer-county