County annual report · FIPS 48011
2020 Armstrong County, TX Power Outage Report
In 2020, customers in Armstrong County, TX went without power for an average of 159.4 hours, a total of 72K customer-hours (Texas average 5.3 hours). That ranks 5th worst of 254 Texas counties and 28th of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Armstrong County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 28, 2020 05:00 | November 4, 2020 15:00 | 7d 10h | 1,815 | 63K |
| 2 | April 22, 2020 14:30 | April 22, 2020 15:00 | 30m | 874 | 220 |
| 3 | November 28, 2020 14:00 | November 28, 2020 21:45 | 7h 45m | 873 | 2,860 |
| 4 | July 14, 2020 20:45 | July 14, 2020 23:00 | 2h 15m | 872 | 1,744 |
| 5 | March 4, 2020 15:00 | March 4, 2020 15:30 | 30m | 870 | 435 |
| 6 | June 15, 2020 20:15 | June 15, 2020 20:45 | 30m | 869 | 435 |
| 7 | April 2, 2020 13:45 | April 2, 2020 14:15 | 30m | 517 | 130 |
| 8 | July 14, 2020 16:30 | July 14, 2020 19:00 | 2h 30m | 342 | 557 |
| 9 | December 23, 2020 20:30 | December 23, 2020 22:00 | 1h 30m | 173 | 88 |
| 10 | August 30, 2020 01:45 | August 30, 2020 17:30 | 15h 45m | 172 | 1,362 |
Outage episodes by size in 2020: 12 reached 100+ customers, 1 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 2020, 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 |
|---|---|---|---|---|---|
| Southwestern Public Service Co | 2020 | 5.5 hrs | 1.25 | 1.7 hrs | 0.92 |
| Greenbelt Electric Coop, Inc | - | - | - | - | - |
| Swisher Electric 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 63% of Texas's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 452 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, TX annual power outage report, 2020, 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/2020/texas/armstrong-county