County annual report · FIPS 48001
2021 Anderson County, TX Power Outage Report
In 2021, customers in Anderson County, TX went without power for an average of 26.1 hours, a total of 756K customer-hours (Texas average 21.0 hours). That ranks 113th worst of 252 Texas counties and 333rd 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 Anderson 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 14, 2021 13:15 | February 23, 2021 03:45 | 8d 14h | 8,881 | 406K |
| 2 | January 10, 2021 20:15 | January 14, 2021 23:00 | 4d 2h | 6,893 | 218K |
| 3 | October 28, 2021 13:00 | October 30, 2021 17:15 | 2d 4h | 3,592 | 22K |
| 4 | May 19, 2021 01:45 | May 20, 2021 03:30 | 1d 1h | 2,801 | 5,359 |
| 5 | February 11, 2021 17:45 | February 14, 2021 09:00 | 2d 15h | 2,684 | 15K |
| 6 | June 1, 2021 01:15 | June 2, 2021 00:45 | 23h 30m | 2,582 | 10K |
| 7 | June 8, 2021 13:15 | June 9, 2021 11:15 | 22h | 2,173 | 5,878 |
| 8 | September 22, 2021 07:45 | September 22, 2021 08:15 | 30m | 1,715 | 589 |
| 9 | July 11, 2021 11:15 | July 12, 2021 21:00 | 1d 9h | 1,238 | 2,867 |
| 10 | July 14, 2021 00:15 | July 14, 2021 08:15 | 8h | 1,065 | 3,642 |
Outage episodes by size in 2021: 78 reached 100+ customers, 12 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 Anderson 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 |
| Trinity Valley Elec Coop Inc | 2021 | 18.0 hrs | - | 3.5 hrs | 2.31 |
| Houston County Elec Coop Inc | - | - | - | - | - |
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 ÷ 29,000 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. Anderson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Anderson 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/anderson-county