County annual report · FIPS 48251
2023 Johnson County, TX Power Outage Report
In 2023, customers in Johnson County, TX went without power for an average of 7.0 hours, a total of 540K customer-hours (Texas average 8.1 hours). That ranks 139th worst of 252 Texas counties and 1139th of 2,977 nationally.
Compared with TX, the US and 2022
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Johnson County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 8, 2023 19:15 | September 12, 2023 03:45 | 3d 8h | 19,711 | 178K |
| 2 | May 5, 2023 16:45 | May 9, 2023 08:30 | 3d 15h | 13,268 | 138K |
| 3 | October 5, 2023 02:30 | October 6, 2023 08:45 | 1d 6h | 6,473 | 26K |
| 4 | October 21, 2023 07:00 | October 21, 2023 15:45 | 8h 45m | 3,424 | 6,874 |
| 5 | October 18, 2023 16:15 | October 19, 2023 00:30 | 8h 15m | 3,129 | 1,624 |
| 6 | December 23, 2023 10:00 | December 23, 2023 19:15 | 9h 15m | 3,034 | 1,744 |
| 7 | October 12, 2023 17:00 | October 13, 2023 05:00 | 12h | 2,962 | 899 |
| 8 | October 29, 2023 23:00 | October 30, 2023 22:15 | 23h 15m | 2,948 | 2,860 |
| 9 | June 8, 2023 11:00 | June 9, 2023 17:15 | 1d 6h | 2,236 | 3,821 |
| 10 | November 30, 2023 15:15 | November 30, 2023 22:15 | 7h | 2,179 | 997 |
Outage episodes by size in 2023: 123 reached 100+ customers, 28 reached 1,000+ customers, 2 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 2023, 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) | 2023 | 3.1 hrs | 1.49 | 86 min | 1.16 |
| HILCO Electric Cooperative, Inc. | 2023 | 2.5 hrs | 1.33 | 2.3 hrs | 1.30 |
| 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 2023; 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, 2023, 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/2023/texas/johnson-county