County annual report · FIPS 51013
2021 Arlington County, VA Power Outage Report
In 2021, customers in Arlington County, VA went without power for an average of 4.1 hours, a total of 454K customer-hours (Virginia average 8.7 hours). That ranks 90th worst of 130 Virginia counties and 1517th 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 Arlington 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 | July 1, 2021 18:30 | July 4, 2021 00:15 | 2d 5h | 11,238 | 94K |
| 2 | April 30, 2021 16:15 | May 2, 2021 00:00 | 1d 7h | 6,286 | 27K |
| 3 | September 15, 2021 19:00 | September 16, 2021 05:45 | 10h 45m | 5,479 | 14K |
| 4 | August 10, 2021 21:45 | August 12, 2021 04:30 | 1d 6h | 5,215 | 43K |
| 5 | August 14, 2021 20:15 | August 17, 2021 00:00 | 2d 3h | 3,734 | 48K |
| 6 | March 12, 2021 21:15 | March 13, 2021 07:45 | 10h 30m | 3,706 | 4,043 |
| 7 | May 26, 2021 21:45 | May 27, 2021 17:45 | 20h | 3,604 | 7,754 |
| 8 | January 28, 2021 02:30 | January 28, 2021 22:30 | 20h | 3,553 | 3,704 |
| 9 | August 26, 2021 17:15 | August 28, 2021 03:45 | 1d 10h | 3,476 | 20K |
| 10 | April 21, 2021 17:30 | April 22, 2021 00:45 | 7h 15m | 2,843 | 4,822 |
Outage episodes by size in 2021: 144 reached 100+ customers, 25 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 Arlington 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 |
|---|---|---|---|---|---|
| Virginia Electric & Power Co | - | - | - | - | - |
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 ÷ 111,055 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. Arlington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Arlington 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/). https://massoutage.com/reports/2021/virginia/arlington-county