County annual report · FIPS 48425
2018 Somervell County, TX Power Outage Report
In 2018, customers in Somervell County, TX went without power for an average of 1.5 hours, a total of 8,021 customer-hours (Texas average 2.4 hours). That ranks 207th worst of 253 Texas counties and 2094th 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 Somervell 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 | October 10, 2018 23:45 | October 11, 2018 02:15 | 2h 30m | 1,245 | 1,383 |
| 2 | May 3, 2018 15:00 | May 3, 2018 19:45 | 4h 45m | 536 | 580 |
| 3 | December 28, 2018 15:15 | December 28, 2018 16:30 | 1h 15m | 429 | 440 |
| 4 | April 30, 2018 15:15 | April 30, 2018 15:30 | 15m | 300 | 75 |
| 5 | August 9, 2018 20:30 | August 9, 2018 21:00 | 30m | 246 | 89 |
| 6 | March 5, 2018 15:30 | March 5, 2018 19:45 | 4h 15m | 226 | 363 |
| 7 | February 18, 2018 20:30 | February 19, 2018 01:45 | 5h 15m | 195 | 67 |
| 8 | December 8, 2018 03:30 | December 8, 2018 07:15 | 3h 45m | 192 | 246 |
| 9 | May 4, 2018 10:45 | May 4, 2018 13:00 | 2h 15m | 121 | 271 |
| 10 | August 1, 2018 20:00 | August 1, 2018 21:00 | 1h | 92 | 92 |
Outage episodes by size in 2018: 9 reached 100+ customers, 1 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 Somervell 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 |
| 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 90% of Texas's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,351 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. Somervell County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Somervell 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/somervell-county