County annual report · FIPS 48225
2021 Houston County, TX Power Outage Report
In 2021, customers in Houston County, TX went without power for an average of 57.3 hours, a total of 669K customer-hours (Texas average 21.0 hours). That ranks 56th worst of 252 Texas counties and 152nd 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 Houston 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 | January 10, 2021 21:00 | January 15, 2021 04:45 | 4d 7h | 9,214 | 239K |
| 2 | February 14, 2021 23:15 | February 23, 2021 04:00 | 8d 4h | 6,087 | 337K |
| 3 | October 27, 2021 13:15 | October 28, 2021 00:30 | 11h 15m | 2,229 | 4,247 |
| 4 | May 19, 2021 01:15 | May 19, 2021 21:15 | 20h | 1,833 | 5,344 |
| 5 | November 25, 2021 10:45 | November 25, 2021 21:15 | 10h 30m | 1,806 | 4,027 |
| 6 | November 3, 2021 16:00 | November 3, 2021 23:15 | 7h 15m | 1,798 | 1,778 |
| 7 | October 1, 2021 13:45 | October 1, 2021 16:45 | 3h | 1,793 | 2,306 |
| 8 | May 14, 2021 22:30 | May 15, 2021 03:45 | 5h 15m | 1,785 | 1,934 |
| 9 | September 29, 2021 11:45 | September 29, 2021 13:45 | 2h | 1,777 | 2,661 |
| 10 | July 12, 2021 07:15 | July 12, 2021 21:00 | 13h 45m | 1,511 | 3,947 |
Outage episodes by size in 2021: 76 reached 100+ customers, 13 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 Houston 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 |
| Entergy Texas Inc. | 2021 | 16.7 hrs | 3.31 | 4.7 hrs | 2.02 |
| 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 ÷ 11,682 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. Houston County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Houston 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/houston-county