County annual report · FIPS 48251
2015 Johnson County, TX Power Outage Report
In 2015, customers in Johnson County, TX went without power for an average of 1.4 hours, a total of 108K customer-hours (Texas average 1.9 hours). That ranks 173rd worst of 238 Texas counties and 1525th of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Johnson County, 2015
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, 2015 18:45 | May 28, 2015 10:30 | 2d 15h | 3,016 | 8,979 |
| 2 | April 27, 2015 02:00 | April 29, 2015 10:30 | 2d 8h | 2,297 | 22K |
| 3 | April 24, 2015 23:00 | April 26, 2015 11:30 | 1d 12h | 1,605 | 16K |
| 4 | May 30, 2015 11:00 | May 31, 2015 09:45 | 22h 45m | 1,293 | 4,668 |
| 5 | April 18, 2015 14:45 | April 21, 2015 07:00 | 2d 16h | 911 | 19K |
| 6 | February 8, 2015 00:00 | February 8, 2015 05:00 | 5h | 898 | 275 |
| 7 | April 22, 2015 18:45 | April 22, 2015 23:15 | 4h 30m | 623 | 1,697 |
| 8 | June 1, 2015 21:15 | June 2, 2015 00:00 | 2h 45m | 497 | 278 |
| 9 | April 11, 2015 16:00 | April 12, 2015 11:15 | 19h 15m | 477 | 4,142 |
| 10 | May 10, 2015 04:45 | May 12, 2015 10:30 | 2d 5h | 476 | 4,393 |
Outage episodes by size in 2015: 38 reached 100+ customers, 4 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 2015, 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 | 2015 | 4.5 hrs | 1.88 | 2.4 hrs | 1.36 |
| United Electric Coop Service Inc - (TX) | 2015 | 2.9 hrs | 1.21 | 1.5 hrs | 0.99 |
| HILCO Electric Cooperative, Inc. | 2015 | 11.9 hrs | 2.13 | 4.7 hrs | 1.59 |
| 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 2015; 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, 2015, 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/2015/texas/johnson-county