County annual report · FIPS 48275
2021 Knox County, TX Power Outage Report
In 2021, customers in Knox County, TX went without power for an average of 100.7 hours, a total of 56K customer-hours (Texas average 21.0 hours). That ranks 26th worst of 252 Texas counties and 78th 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 Knox 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 15, 2021 15:45 | February 18, 2021 16:30 | 3d | 1,358 | 37K |
| 2 | December 17, 2021 15:30 | December 17, 2021 18:30 | 3h | 763 | 1,723 |
| 3 | March 15, 2021 22:15 | March 15, 2021 23:15 | 1h | 628 | 472 |
| 4 | March 17, 2021 23:15 | March 18, 2021 04:15 | 5h | 628 | 2,988 |
| 5 | March 18, 2021 13:45 | March 18, 2021 14:30 | 45m | 628 | 471 |
| 6 | June 16, 2021 20:45 | June 17, 2021 05:00 | 8h 15m | 474 | 2,033 |
| 7 | April 14, 2021 17:45 | April 14, 2021 21:30 | 3h 45m | 441 | 732 |
| 8 | June 14, 2021 02:00 | June 15, 2021 03:15 | 1d 1h | 428 | 2,849 |
| 9 | February 20, 2021 01:45 | February 20, 2021 04:15 | 2h 30m | 397 | 109 |
| 10 | September 7, 2021 20:00 | September 7, 2021 20:30 | 30m | 389 | 149 |
Outage episodes by size in 2021: 22 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 Knox 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 |
|---|---|---|---|---|---|
| AEP Texas North Company | 2021 | 18.9 hrs | 2.72 | 1.9 hrs | 1.24 |
| Tri-County Electric Coop, Inc (TX) | 2021 | 31.8 hrs | 3.38 | 5.5 hrs | 2.89 |
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 ÷ 551 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. Knox County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Knox 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/knox-county