County annual report · FIPS 48129
2021 Donley County, TX Power Outage Report
In 2021, customers in Donley County, TX went without power for an average of 13.1 hours, a total of 22K customer-hours (Texas average 21.0 hours). That ranks 175th worst of 252 Texas counties and 631st of 2,974 nationally.
Compared with TX, the US and 2020
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Donley 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 | December 12, 2021 11:15 | December 12, 2021 18:30 | 7h 15m | 1,867 | 13K |
| 2 | December 13, 2021 18:30 | December 13, 2021 20:30 | 2h | 1,730 | 3,460 |
| 3 | March 14, 2021 00:30 | March 15, 2021 02:45 | 1d 2h | 304 | 3,623 |
| 4 | May 31, 2021 19:15 | May 31, 2021 20:00 | 45m | 223 | 167 |
| 5 | November 19, 2021 15:00 | November 19, 2021 21:30 | 6h 30m | 103 | 668 |
| 6 | November 14, 2021 15:15 | November 14, 2021 20:00 | 4h 45m | 64 | 289 |
| 7 | June 11, 2021 14:15 | June 11, 2021 15:45 | 1h 30m | 44 | 66 |
| 8 | June 11, 2021 17:15 | June 11, 2021 17:45 | 30m | 17 | 9 |
| 9 | August 18, 2021 18:30 | August 18, 2021 19:45 | 1h 15m | 17 | 8 |
| 10 | April 15, 2021 14:45 | April 15, 2021 15:45 | 1h | 16 | 16 |
Outage episodes by size in 2021: 5 reached 100+ customers, 2 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 Donley 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 |
|---|---|---|---|---|---|
| Southwestern Public Service Co | 2021 | 3.2 hrs | 1.75 | 2.0 hrs | 1.07 |
| Southwestern Electric Power Co | 2021 | 11.8 hrs | 2.41 | 5.1 hrs | 1.79 |
| Lighthouse Electric Coop, Inc | - | - | - | - | - |
| Greenbelt 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 94% of Texas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,704 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. Donley County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Donley County, TX 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/texas/donley-county