County annual report · FIPS 48111
2020 Dallam County, TX Power Outage Report
In 2020, customers in Dallam County, TX went without power for an average of 8.5 hours, a total of 11K customer-hours (Texas average 5.3 hours). That ranks 112th worst of 254 Texas counties and 904th of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallam County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 29, 2020 01:00 | October 31, 2020 16:45 | 2d 15h | 2,118 | 8,742 |
| 2 | August 8, 2020 23:45 | August 9, 2020 01:15 | 1h 30m | 234 | 260 |
| 3 | November 5, 2020 17:00 | November 5, 2020 22:30 | 5h 30m | 133 | 181 |
| 4 | June 7, 2020 21:30 | June 8, 2020 01:15 | 3h 45m | 97 | 230 |
| 5 | June 23, 2020 00:30 | June 23, 2020 04:00 | 3h 30m | 89 | 147 |
| 6 | December 29, 2020 13:30 | December 29, 2020 15:45 | 2h 15m | 49 | 99 |
| 7 | January 6, 2020 14:00 | January 6, 2020 15:30 | 1h 30m | 43 | 65 |
| 8 | January 12, 2020 14:00 | January 12, 2020 16:15 | 2h 15m | 43 | 75 |
| 9 | January 29, 2020 16:30 | January 29, 2020 22:45 | 6h 15m | 43 | 161 |
| 10 | May 19, 2020 16:45 | May 19, 2020 18:00 | 1h 15m | 43 | 22 |
Outage episodes by size in 2020: 3 reached 100+ customers, 1 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 2020, 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 | 2020 | 5.5 hrs | 1.25 | 1.7 hrs | 0.92 |
| 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 63% of Texas's customers in 2020; 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, 2020, 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/2020/texas/dallam-county