County annual report · FIPS 48011
2015 Armstrong County, TX Power Outage Report
In 2015, customers in Armstrong County, TX went without power for an average of 6.3 hours, a total of 2,861 customer-hours (Texas average 1.9 hours). That ranks 60th worst of 238 Texas counties and 429th of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Armstrong County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 17, 2015 00:45 | November 17, 2015 01:15 | 30m | 840 | 211 |
| 2 | May 9, 2015 12:00 | May 9, 2015 19:30 | 7h 30m | 377 | 1,022 |
| 3 | November 27, 2015 10:15 | November 27, 2015 14:45 | 4h 30m | 177 | 450 |
| 4 | August 3, 2015 06:15 | August 3, 2015 11:15 | 5h | 154 | 319 |
| 5 | July 4, 2015 12:00 | July 4, 2015 14:30 | 2h 30m | 121 | 64 |
| 6 | November 30, 2015 16:30 | November 30, 2015 18:00 | 1h 30m | 84 | 85 |
| 7 | August 3, 2015 12:30 | August 3, 2015 18:30 | 6h | 57 | 230 |
| 8 | November 27, 2015 20:45 | November 27, 2015 21:15 | 30m | 55 | 28 |
| 9 | November 28, 2015 06:00 | November 28, 2015 14:30 | 8h 30m | 46 | 217 |
| 10 | May 23, 2015 15:30 | May 23, 2015 18:00 | 2h 30m | 17 | 43 |
Outage episodes by size in 2015: 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 2015, 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 | 2015 | 3.4 hrs | 1.53 | 2.1 hrs | 1.25 |
| 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 n/a of Texas's customers in 2015; 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, 2015, 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/2015/texas/armstrong-county