County annual report · FIPS 51161
2021 Roanoke County, VA Power Outage Report
In 2021, customers in Roanoke County, VA went without power for an average of 9.8 hours, a total of 307K customer-hours (Virginia average 8.7 hours). That ranks 65th worst of 130 Virginia counties and 792nd of 2,974 nationally.
Compared with VA, the US and 2020
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Roanoke 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 4, 2021 12:30 | May 7, 2021 04:30 | 2d 16h | 2,857 | 37K |
| 2 | August 1, 2021 02:00 | August 1, 2021 17:45 | 15h 45m | 2,077 | 5,025 |
| 3 | November 26, 2021 11:30 | November 27, 2021 16:00 | 1d 4h | 1,496 | 1,077 |
| 4 | February 18, 2021 09:00 | February 21, 2021 02:30 | 2d 17h | 1,461 | 11K |
| 5 | September 1, 2021 04:30 | September 2, 2021 02:15 | 21h 45m | 1,356 | 7,566 |
| 6 | July 16, 2021 17:15 | July 17, 2021 01:15 | 8h | 1,272 | 2,923 |
| 7 | March 27, 2021 19:30 | March 29, 2021 19:30 | 2d | 1,240 | 4,816 |
| 8 | September 21, 2021 13:30 | September 25, 2021 02:00 | 3d 12h | 1,144 | 11K |
| 9 | October 6, 2021 09:00 | October 7, 2021 03:45 | 18h 45m | 1,127 | 3,268 |
| 10 | February 13, 2021 08:45 | February 18, 2021 00:30 | 4d 15h | 1,080 | 28K |
Outage episodes by size in 2021: 93 reached 100+ customers, 10 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 Roanoke 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 |
| Craig-Botetourt Electric Coop | 2018 | 25.9 hrs | 6.04 | 8.7 hrs | 3.51 |
| City of Salem - (VA) | 2021 | 29 min | 0.27 | 29 min | 0.27 |
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 Virginia's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 31,398 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. Roanoke County has data for 2015–2017, 2020–2025.
Cite this report
MassOutage (massoutage.com), Roanoke County, VA 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/virginia/roanoke-county