County annual report · FIPS 48139
2018 Ellis County, TX Power Outage Report
In 2018, customers in Ellis County, TX went without power for an average of 3.0 hours, a total of 242K customer-hours (Texas average 2.4 hours). That ranks 152nd worst of 253 Texas counties and 1513th 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 Ellis 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 8, 2018 11:15 | February 8, 2018 23:45 | 12h 30m | 12,920 | 12K |
| 2 | July 6, 2018 18:30 | July 8, 2018 04:30 | 1d 10h | 5,287 | 13K |
| 3 | August 18, 2018 20:30 | August 18, 2018 23:15 | 2h 45m | 4,484 | 3,373 |
| 4 | February 13, 2018 15:45 | February 13, 2018 18:15 | 2h 30m | 4,157 | 2,085 |
| 5 | January 16, 2018 14:15 | January 18, 2018 23:45 | 2d 9h | 2,787 | 20K |
| 6 | October 13, 2018 03:45 | October 13, 2018 08:30 | 4h 45m | 2,533 | 3,009 |
| 7 | July 8, 2018 19:00 | July 9, 2018 04:00 | 9h | 2,449 | 2,798 |
| 8 | March 26, 2018 16:45 | March 26, 2018 18:45 | 2h | 2,314 | 1,202 |
| 9 | May 20, 2018 14:15 | May 21, 2018 10:15 | 20h | 2,232 | 8,605 |
| 10 | August 10, 2018 11:30 | August 13, 2018 05:00 | 2d 17h | 1,927 | 21K |
Outage episodes by size in 2018: 104 reached 100+ customers, 21 reached 1,000+ customers, 1 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 Ellis 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 |
| HILCO Electric Cooperative, Inc. | 2018 | 1.7 hrs | 0.92 | 1.6 hrs | 0.92 |
| Navarro 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 ÷ 80,952 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. Ellis County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Ellis 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/ellis-county