County annual report · FIPS 51121
2021 Montgomery County, VA Power Outage Report
In 2021, customers in Montgomery County, VA went without power for an average of 9.3 hours, a total of 302K customer-hours (Virginia average 8.7 hours). That ranks 66th worst of 130 Virginia counties and 831st 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 Montgomery 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 | June 10, 2021 02:00 | June 11, 2021 02:00 | 1d | 6,452 | 2,459 |
| 2 | February 13, 2021 13:30 | February 18, 2021 01:15 | 4d 11h | 3,217 | 81K |
| 3 | February 18, 2021 11:00 | February 20, 2021 23:30 | 2d 12h | 3,007 | 26K |
| 4 | May 4, 2021 15:30 | May 6, 2021 16:30 | 2d 1h | 2,176 | 30K |
| 5 | May 2, 2021 13:45 | May 2, 2021 16:30 | 2h 45m | 1,946 | 5,344 |
| 6 | May 11, 2021 12:00 | May 11, 2021 17:00 | 5h | 1,942 | 3,424 |
| 7 | July 2, 2021 23:45 | July 14, 2021 23:30 | 11d 23h | 1,889 | 5,515 |
| 8 | October 23, 2021 23:15 | October 24, 2021 19:45 | 20h 30m | 1,728 | 17K |
| 9 | August 29, 2021 23:15 | August 30, 2021 22:00 | 22h 45m | 1,157 | 4,446 |
| 10 | August 31, 2021 23:30 | September 1, 2021 21:30 | 22h | 1,005 | 5,632 |
Outage episodes by size in 2021: 79 reached 100+ customers, 11 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 Montgomery 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 Radford - (VA) | - | - | - | - | - |
| Virginia Tech Electric Service | - | - | - | - | - |
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 ÷ 32,573 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. Montgomery County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montgomery 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/montgomery-county