County annual report · FIPS 48111
2025 Dallam County, TX Power Outage Report
In 2025, customers in Dallam County, TX went without power for an average of 11.2 hours, a total of 14K customer-hours (Texas average 4.6 hours). That ranks 106th worst of 254 Texas counties and 715th of 3,000 nationally.
Compared with TX, the US and 2024
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallam County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 18, 2025 04:30 | September 18, 2025 08:15 | 3h 45m | 924 | 3,436 |
| 2 | March 12, 2025 16:15 | March 12, 2025 19:45 | 3h 30m | 581 | 303 |
| 3 | April 5, 2025 02:30 | April 5, 2025 06:30 | 4h | 470 | 642 |
| 4 | January 11, 2025 08:30 | January 11, 2025 22:15 | 13h 45m | 433 | 3,888 |
| 5 | March 5, 2025 20:15 | March 6, 2025 14:00 | 17h 45m | 278 | 430 |
| 6 | August 6, 2025 20:15 | August 7, 2025 01:15 | 5h | 241 | 638 |
| 7 | January 13, 2025 15:15 | January 13, 2025 16:30 | 1h 15m | 240 | 251 |
| 8 | April 17, 2025 19:45 | April 17, 2025 21:45 | 2h | 240 | 362 |
| 9 | March 27, 2025 13:15 | March 27, 2025 14:15 | 1h | 198 | 100 |
| 10 | March 4, 2025 16:30 | March 5, 2025 00:00 | 7h 30m | 174 | 513 |
Outage episodes by size in 2025: 14 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 Dallam County reported on EIA Form 861 for 2025, 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 | 2024 | 2.9 hrs | 1.21 | 2.1 hrs | 1.14 |
| Tri-County Electric Coop, Inc (OK) | - | - | - | - | - |
| Rita Blanca Electric Coop, Inc | - | - | - | - | - |
| Southwestern Electric Coop Inc - (NM) | - | - | - | - | - |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,292 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. Dallam County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dallam County, TX annual power outage report, 2025, 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/2025/texas/dallam-county