County annual report · FIPS 48251
2024 Johnson County, TX Power Outage Report
In 2024, customers in Johnson County, TX went without power for an average of 3.5 hours, a total of 272K customer-hours (Texas average 25.5 hours). That ranks 193rd worst of 252 Texas counties and 1959th of 2,990 nationally.
Compared with TX, the US and 2023
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Johnson County, 2024
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 25, 2024 23:45 | June 1, 2024 21:45 | 6d 22h | 7,968 | 93K |
| 2 | May 12, 2024 11:45 | May 13, 2024 00:15 | 12h 30m | 5,572 | 7,165 |
| 3 | May 16, 2024 14:45 | May 17, 2024 06:30 | 15h 45m | 3,030 | 5,259 |
| 4 | April 19, 2024 13:30 | April 22, 2024 07:15 | 2d 17h | 2,221 | 9,507 |
| 5 | December 16, 2024 23:15 | December 17, 2024 08:30 | 9h 15m | 1,897 | 2,042 |
| 6 | May 5, 2024 01:45 | May 7, 2024 10:15 | 2d 8h | 1,855 | 4,613 |
| 7 | May 21, 2024 11:45 | May 21, 2024 22:45 | 11h | 1,853 | 1,506 |
| 8 | July 17, 2024 22:45 | July 18, 2024 11:00 | 12h 15m | 1,645 | 2,399 |
| 9 | April 27, 2024 14:45 | April 29, 2024 03:15 | 1d 12h | 1,624 | 6,464 |
| 10 | November 18, 2024 11:30 | November 19, 2024 07:00 | 19h 30m | 1,607 | 3,287 |
Outage episodes by size in 2024: 132 reached 100+ customers, 19 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 Johnson County reported on EIA Form 861 for 2024, 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 |
| United Electric Coop Service Inc - (TX) | 2024 | 1.9 hrs | 1.19 | 1.9 hrs | 1.19 |
| HILCO Electric Cooperative, Inc. | 2024 | 2.1 hrs | 1.35 | 2.0 hrs | 1.32 |
| Texas-New Mexico Power Co | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Texas's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 76,674 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. Johnson County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Johnson County, TX annual power outage report, 2024, 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/2024/texas/johnson-county