County annual report · FIPS 48193
2021 Hamilton County, TX Power Outage Report
In 2021, customers in Hamilton County, TX went without power for an average of 24.7 hours, a total of 45K customer-hours (Texas average 21.0 hours). That ranks 116th worst of 252 Texas counties and 342nd 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 Hamilton 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 24, 2021 18:00 | May 24, 2021 20:15 | 2h 15m | 1,585 | 1,328 |
| 2 | February 15, 2021 08:15 | February 18, 2021 10:00 | 3d 1h | 1,192 | 34K |
| 3 | June 8, 2021 10:45 | June 8, 2021 16:15 | 5h 30m | 754 | 3,345 |
| 4 | July 6, 2021 20:45 | July 7, 2021 00:15 | 3h 30m | 679 | 2,039 |
| 5 | January 10, 2021 15:15 | January 12, 2021 01:15 | 1d 10h | 150 | 2,530 |
| 6 | July 21, 2021 18:45 | July 21, 2021 19:00 | 15m | 130 | 33 |
| 7 | June 7, 2021 14:30 | June 7, 2021 21:30 | 7h | 106 | 117 |
| 8 | September 16, 2021 19:00 | September 16, 2021 20:30 | 1h 30m | 63 | 89 |
| 9 | October 14, 2021 00:15 | October 14, 2021 03:30 | 3h 15m | 63 | 104 |
| 10 | October 28, 2021 19:00 | October 29, 2021 06:30 | 11h 30m | 60 | 303 |
Outage episodes by size in 2021: 7 reached 100+ customers, 2 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 Hamilton 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 |
|---|---|---|---|---|---|
| United Electric Coop Service Inc - (TX) | 2021 | 13.5 hrs | - | 3.1 hrs | 2.07 |
| Heart of Texas Electric Coop | 2021 | 14.1 hrs | 2.22 | 7.1 hrs | 1.93 |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Hamilton County Elec Coop Assn | - | - | - | - | - |
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 ÷ 1,841 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. Hamilton County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Hamilton 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/hamilton-county