County annual report · FIPS 48111
2019 Dallam County, TX Power Outage Report
In 2019, customers in Dallam County, TX went without power for an average of 6.2 hours, a total of 8,050 customer-hours (Texas average 4.9 hours). That ranks 121st worst of 254 Texas counties and 882nd of 2,945 nationally.
Compared with TX, the US and 2018
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallam County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 23, 2019 16:00 | February 23, 2019 23:15 | 7h 15m | 326 | 1,004 |
| 2 | August 24, 2019 01:00 | August 24, 2019 05:15 | 4h 15m | 219 | 462 |
| 3 | March 13, 2019 16:15 | March 16, 2019 22:00 | 3d 5h | 153 | 3,028 |
| 4 | June 25, 2019 19:30 | June 25, 2019 23:00 | 3h 30m | 144 | 166 |
| 5 | February 24, 2019 17:15 | February 24, 2019 20:30 | 3h 15m | 128 | 416 |
| 6 | November 13, 2019 16:15 | November 13, 2019 17:45 | 1h 30m | 110 | 129 |
| 7 | November 20, 2019 18:30 | November 20, 2019 22:30 | 4h | 110 | 300 |
| 8 | July 16, 2019 22:15 | July 17, 2019 01:30 | 3h 15m | 82 | 225 |
| 9 | August 15, 2019 22:45 | August 16, 2019 02:15 | 3h 30m | 72 | 143 |
| 10 | August 16, 2019 21:30 | August 16, 2019 22:45 | 1h 15m | 71 | 89 |
Outage episodes by size in 2019: 7 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 2019, 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 |
| 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 93% of Texas's customers in 2019; 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, 2019, 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/2019/texas/dallam-county