County annual report · FIPS 48251
2020 Johnson County, TX Power Outage Report
In 2020, customers in Johnson County, TX went without power for an average of 3.1 hours, a total of 234K customer-hours (Texas average 5.3 hours). That ranks 195th worst of 254 Texas counties and 1861st of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Johnson County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 28, 2020 10:15 | May 1, 2020 05:45 | 2d 19h | 6,889 | 48K |
| 2 | September 1, 2020 15:45 | September 3, 2020 00:00 | 1d 8h | 4,044 | 13K |
| 3 | June 24, 2020 18:00 | June 25, 2020 08:15 | 14h 15m | 3,792 | 6,673 |
| 4 | December 24, 2020 02:30 | December 24, 2020 06:45 | 4h 15m | 3,441 | 6,838 |
| 5 | November 15, 2020 07:15 | November 15, 2020 18:30 | 11h 15m | 3,336 | 4,268 |
| 6 | May 28, 2020 14:15 | May 28, 2020 18:45 | 4h 30m | 2,076 | 2,008 |
| 7 | May 16, 2020 01:45 | May 17, 2020 08:30 | 1d 6h | 1,727 | 12K |
| 8 | December 14, 2020 01:15 | December 14, 2020 04:45 | 3h 30m | 1,686 | 796 |
| 9 | June 9, 2020 12:45 | June 9, 2020 23:15 | 10h 30m | 1,667 | 4,529 |
| 10 | June 6, 2020 00:00 | June 6, 2020 08:30 | 8h 30m | 1,665 | 2,168 |
Outage episodes by size in 2020: 142 reached 100+ customers, 17 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 2020, 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) | 2020 | 80 min | 1.06 | 80 min | 1.06 |
| HILCO Electric Cooperative, Inc. | 2020 | 2.4 hrs | 1.30 | 2.4 hrs | 1.29 |
| 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 63% of Texas's customers in 2020; 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, 2020, 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/2020/texas/johnson-county