County annual report · FIPS 48115
2021 Dawson County, TX Power Outage Report
In 2021, customers in Dawson County, TX went without power for an average of 28.3 hours, a total of 231K customer-hours (Texas average 21.0 hours). That ranks 103rd worst of 252 Texas counties and 311th 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 Dawson 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 | February 12, 2021 06:15 | February 23, 2021 00:45 | 10d 18h | 5,739 | 93K |
| 2 | June 25, 2021 23:30 | July 10, 2021 09:30 | 14d 10h | 5,531 | 99K |
| 3 | March 21, 2021 19:15 | March 22, 2021 07:15 | 12h | 1,521 | 1,332 |
| 4 | January 30, 2021 17:00 | January 30, 2021 23:30 | 6h 30m | 1,519 | 3,411 |
| 5 | May 18, 2021 10:30 | May 18, 2021 18:15 | 7h 45m | 1,502 | 7,420 |
| 6 | February 11, 2021 02:00 | February 11, 2021 19:30 | 17h 30m | 670 | 3,610 |
| 7 | April 6, 2021 12:30 | April 14, 2021 18:45 | 8d 6h | 480 | 1,477 |
| 8 | October 10, 2021 19:15 | October 11, 2021 10:30 | 15h 15m | 447 | 4,081 |
| 9 | June 25, 2021 15:45 | June 25, 2021 19:30 | 3h 45m | 430 | 1,187 |
| 10 | March 8, 2021 14:00 | March 8, 2021 21:15 | 7h 15m | 417 | 113 |
Outage episodes by size in 2021: 30 reached 100+ customers, 5 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 Dawson 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 |
|---|---|---|---|---|---|
| Oncor Electric Delivery Company LLC | 2017 | 3.4 hrs | 1.69 | 2.4 hrs | 1.49 |
| Southwestern Public Service Co | 2021 | 3.2 hrs | 1.75 | 2.0 hrs | 1.07 |
| Lyntegar Electric Coop, Inc | 2021 | 6.5 hrs | - | 6.5 hrs | - |
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 ÷ 8,173 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. Dawson County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Dawson 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/dawson-county