County annual report · FIPS 48333
2021 Mills County, TX Power Outage Report
In 2021, customers in Mills County, TX went without power for an average of 4.4 hours, a total of 15K customer-hours (Texas average 21.0 hours). That ranks 224th worst of 252 Texas counties and 1458th 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 Mills 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 | May 11, 2021 17:45 | May 12, 2021 01:45 | 8h | 252 | 1,805 |
| 2 | February 15, 2021 08:30 | February 18, 2021 01:45 | 2d 17h | 246 | 10K |
| 3 | April 9, 2021 05:15 | April 9, 2021 08:15 | 3h | 223 | 669 |
| 4 | January 10, 2021 15:45 | January 11, 2021 14:30 | 22h 45m | 200 | 709 |
| 5 | June 27, 2021 02:45 | June 27, 2021 06:45 | 4h | 164 | 311 |
| 6 | July 14, 2021 16:30 | July 14, 2021 18:30 | 2h | 69 | 138 |
| 7 | July 15, 2021 15:15 | July 15, 2021 22:15 | 7h | 60 | 420 |
| 8 | March 25, 2021 11:00 | March 25, 2021 14:45 | 3h 45m | 58 | 123 |
| 9 | August 15, 2021 13:15 | August 15, 2021 19:15 | 6h | 50 | 130 |
| 10 | July 27, 2021 21:30 | July 28, 2021 01:00 | 3h 30m | 45 | 114 |
Outage episodes by size in 2021: 5 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 Mills 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 |
| Comanche County Elec Coop Assn | - | - | - | - | - |
| Hamilton County Elec Coop Assn | - | - | - | - | - |
| City of Goldthwaite - (TX) | - | - | - | - | - |
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 ÷ 3,489 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. Mills County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Mills 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/mills-county