County annual report · FIPS 48011
2018 Armstrong County, TX Power Outage Report
In 2018, customers in Armstrong County, TX went without power for an average of 7.9 hours, a total of 3,558 customer-hours (Texas average 2.4 hours). That ranks 68th worst of 253 Texas counties and 701st of 2,798 nationally.
Compared with TX, the US and 2017
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Armstrong County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 14, 2018 23:15 | August 14, 2018 23:45 | 30m | 863 | 432 |
| 2 | June 13, 2018 00:30 | June 13, 2018 02:15 | 1h 45m | 855 | 1,283 |
| 3 | February 6, 2018 09:45 | February 6, 2018 14:15 | 4h 30m | 309 | 778 |
| 4 | July 30, 2018 07:45 | July 30, 2018 10:15 | 2h 30m | 270 | 439 |
| 5 | May 13, 2018 02:30 | May 13, 2018 05:00 | 2h 30m | 173 | 346 |
| 6 | October 12, 2018 18:00 | October 12, 2018 20:00 | 2h | 47 | 94 |
| 7 | February 13, 2018 20:30 | February 13, 2018 21:15 | 45m | 18 | 9 |
| 8 | August 12, 2018 20:00 | August 12, 2018 21:15 | 1h 15m | 17 | 21 |
| 9 | December 12, 2018 09:15 | December 12, 2018 11:45 | 2h 30m | 13 | 12 |
| 10 | May 24, 2018 16:15 | May 24, 2018 19:45 | 3h 30m | 5 | 18 |
Outage episodes by size in 2018: 5 reached 100+ customers, 0 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 2018, 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 | 2018 | 2.0 hrs | 1.08 | 1.9 hrs | 1.06 |
| 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 90% of Texas's customers in 2018; 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, 2018, 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/2018/texas/armstrong-county