County annual report · FIPS 48213
2021 Henderson County, TX Power Outage Report
In 2021, customers in Henderson County, TX went without power for an average of 18.2 hours, a total of 1.0M customer-hours (Texas average 21.0 hours). That ranks 150th worst of 252 Texas counties and 473rd 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 Henderson 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 22, 2021 13:15 | 8d | 27,600 | 722K |
| 2 | October 11, 2021 01:15 | October 11, 2021 22:00 | 20h 45m | 4,719 | 16K |
| 3 | January 10, 2021 20:45 | January 13, 2021 19:45 | 2d 23h | 4,455 | 56K |
| 4 | October 27, 2021 11:45 | October 30, 2021 22:15 | 3d 10h | 3,943 | 42K |
| 5 | June 7, 2021 14:45 | June 8, 2021 04:30 | 13h 45m | 3,040 | 3,678 |
| 6 | July 20, 2021 16:15 | July 21, 2021 05:30 | 13h 15m | 2,847 | 1,284 |
| 7 | April 10, 2021 00:15 | April 10, 2021 08:45 | 8h 30m | 2,822 | 2,982 |
| 8 | June 8, 2021 13:00 | June 9, 2021 01:00 | 12h | 2,653 | 3,196 |
| 9 | June 6, 2021 12:00 | June 7, 2021 06:30 | 18h 30m | 2,257 | 3,303 |
| 10 | November 11, 2021 05:45 | November 12, 2021 02:15 | 20h 30m | 2,236 | 5,622 |
Outage episodes by size in 2021: 125 reached 100+ customers, 40 reached 1,000+ customers, 1 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 Henderson 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 |
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 ÷ 55,808 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. Henderson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Henderson 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/henderson-county