County annual report · FIPS 48099
2018 Coryell County, TX Power Outage Report
In 2018, customers in Coryell County, TX went without power for an average of 1.7 hours, a total of 44K customer-hours (Texas average 2.4 hours). That ranks 200th worst of 253 Texas counties and 2010th of 2,798 nationally.
Compared with TX, the US and 2017
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Coryell County, 2018
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 8, 2018 21:45 | July 9, 2018 04:45 | 7h | 1,740 | 2,194 |
| 2 | August 22, 2018 00:00 | August 22, 2018 11:45 | 11h 45m | 1,702 | 2,152 |
| 3 | February 21, 2018 21:30 | February 22, 2018 04:00 | 6h 30m | 1,469 | 2,356 |
| 4 | May 20, 2018 14:15 | May 20, 2018 21:30 | 7h 15m | 990 | 1,697 |
| 5 | March 20, 2018 15:15 | March 20, 2018 15:45 | 30m | 750 | 375 |
| 6 | February 9, 2018 16:00 | February 9, 2018 20:00 | 4h | 641 | 1,175 |
| 7 | July 3, 2018 08:15 | July 3, 2018 11:00 | 2h 45m | 494 | 988 |
| 8 | December 21, 2018 20:15 | December 22, 2018 05:30 | 9h 15m | 487 | 705 |
| 9 | October 13, 2018 17:15 | October 14, 2018 16:30 | 23h 15m | 479 | 1,526 |
| 10 | June 24, 2018 13:45 | June 25, 2018 04:15 | 14h 30m | 476 | 836 |
Outage episodes by size in 2018: 37 reached 100+ customers, 3 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 Coryell County reported on EIA Form 861 for 2018, 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 |
| Heart of Texas Electric Coop | 2018 | 1.9 hrs | 1.15 | 1.7 hrs | 1.03 |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Hamilton County Elec Coop Assn | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 90% of Texas's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 26,485 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. Coryell County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Coryell County, TX annual power outage report, 2018, 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/2018/texas/coryell-county