County annual report · FIPS 48251
2019 Johnson County, TX Power Outage Report
In 2019, customers in Johnson County, TX went without power for an average of 4.3 hours, a total of 330K customer-hours (Texas average 4.9 hours). That ranks 149th worst of 254 Texas counties and 1253rd of 2,945 nationally.
Compared with TX, the US and 2018
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Johnson County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 10, 2019 23:45 | July 12, 2019 23:45 | 2d | 6,865 | 48K |
| 2 | June 23, 2019 21:30 | June 26, 2019 03:45 | 2d 6h | 4,659 | 43K |
| 3 | March 13, 2019 03:00 | March 15, 2019 02:00 | 1d 23h | 4,321 | 51K |
| 4 | October 11, 2019 00:45 | October 12, 2019 02:45 | 1d 2h | 3,316 | 11K |
| 5 | April 6, 2019 14:30 | April 7, 2019 05:00 | 14h 30m | 2,832 | 3,838 |
| 6 | June 29, 2019 21:15 | July 1, 2019 07:15 | 1d 10h | 2,657 | 6,510 |
| 7 | June 8, 2019 02:45 | June 8, 2019 12:00 | 9h 15m | 2,206 | 1,627 |
| 8 | June 9, 2019 01:00 | June 9, 2019 13:15 | 12h 15m | 2,199 | 4,942 |
| 9 | June 16, 2019 07:15 | June 18, 2019 00:15 | 1d 17h | 2,086 | 12K |
| 10 | August 27, 2019 12:00 | August 28, 2019 08:00 | 20h | 1,959 | 7,817 |
Outage episodes by size in 2019: 128 reached 100+ customers, 18 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 2019, 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) | 2018 | 7.6 hrs | 1.36 | 82 min | 0.99 |
| HILCO Electric Cooperative, Inc. | 2018 | 1.7 hrs | 0.92 | 1.6 hrs | 0.92 |
| 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 93% of Texas's customers in 2019; 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, 2019, 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/2019/texas/johnson-county