County annual report · FIPS 42005
2021 Armstrong County, PA Power Outage Report
In 2021, customers in Armstrong County, PA went without power for an average of 6.0 hours, a total of 190K customer-hours (Pennsylvania average 4.1 hours). That ranks 27th worst of 67 Pennsylvania counties and 1138th of 2,974 nationally.
Compared with PA, the US and 2020
Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.
Biggest outages in Armstrong 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 21, 2021 17:45 | June 23, 2021 01:15 | 1d 7h | 3,904 | 20K |
| 2 | July 7, 2021 18:30 | July 10, 2021 01:30 | 2d 7h | 3,117 | 36K |
| 3 | October 25, 2021 02:00 | October 25, 2021 03:30 | 1h 30m | 2,674 | 3,054 |
| 4 | March 17, 2021 12:15 | March 17, 2021 18:30 | 6h 15m | 2,669 | 11K |
| 5 | January 26, 2021 16:15 | January 26, 2021 19:30 | 3h 15m | 2,665 | 2,035 |
| 6 | August 12, 2021 17:00 | August 15, 2021 17:00 | 3d | 2,161 | 20K |
| 7 | June 30, 2021 13:30 | July 2, 2021 16:00 | 2d 2h | 1,743 | 4,496 |
| 8 | April 30, 2021 18:15 | May 1, 2021 16:15 | 22h | 1,673 | 3,390 |
| 9 | December 11, 2021 13:00 | December 13, 2021 04:00 | 1d 15h | 1,414 | 18K |
| 10 | March 26, 2021 05:45 | March 27, 2021 21:15 | 1d 15h | 1,280 | 6,013 |
Outage episodes by size in 2021: 64 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 Armstrong 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 |
|---|---|---|---|---|---|
| West Penn Power Company | 2021 | 4.2 hrs | 1.39 | 2.5 hrs | 1.07 |
| FirstEnergy Pennsylvania Electric Co | - | - | - | - | - |
| United Electric Coop, Inc - (PA) | - | - | - | - | - |
| Central Electric Coop, Inc - (PA) | - | - | - | - | - |
| REA Energy Coop Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Pennsylvania's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 31,334 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. Armstrong County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Armstrong County, PA 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/pennsylvania/armstrong-county