County annual report · FIPS 48451
2018 Tom Green County, TX Power Outage Report
In 2018, customers in Tom Green County, TX went without power for an average of 1.8 hours, a total of 107K customer-hours (Texas average 2.4 hours). That ranks 195th worst of 253 Texas counties and 1935th 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 Tom Green 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 | February 17, 2018 22:30 | February 18, 2018 02:45 | 4h 15m | 3,880 | 9,411 |
| 2 | November 13, 2018 12:00 | November 13, 2018 21:00 | 9h | 2,589 | 2,841 |
| 3 | August 13, 2018 10:00 | August 13, 2018 13:30 | 3h 30m | 2,199 | 6,926 |
| 4 | April 21, 2018 07:30 | April 21, 2018 12:00 | 4h 30m | 2,172 | 3,001 |
| 5 | November 27, 2018 14:15 | November 27, 2018 16:30 | 2h 15m | 2,137 | 1,076 |
| 6 | May 14, 2018 23:45 | May 15, 2018 09:30 | 9h 45m | 2,027 | 5,212 |
| 7 | May 15, 2018 22:00 | May 16, 2018 17:45 | 19h 45m | 1,938 | 6,576 |
| 8 | January 4, 2018 12:00 | January 4, 2018 21:00 | 9h | 1,163 | 3,209 |
| 9 | January 21, 2018 06:15 | January 22, 2018 00:00 | 17h 45m | 1,159 | 7,320 |
| 10 | May 31, 2018 14:15 | June 1, 2018 10:45 | 20h 30m | 1,119 | 1,109 |
Outage episodes by size in 2018: 62 reached 100+ customers, 13 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 Tom Green 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 |
| AEP Texas Central Company | 2018 | 3.3 hrs | 1.81 | 2.8 hrs | 1.68 |
| AEP Texas North Company | 2018 | 3.0 hrs | 1.57 | 2.3 hrs | 1.40 |
| Concho Valley Elec Coop Inc | 2018 | 8.3 hrs | 4.63 | 7.4 hrs | 4.55 |
| Southwest Texas Elec Coop, Inc | - | - | - | - | - |
| Coleman County Elec Coop, Inc | - | - | - | - | - |
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 ÷ 58,381 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. Tom Green County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Tom Green 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/tom-green-county