County annual report · FIPS 48113
2017 Dallas County, TX Power Outage Report
In 2017, customers in Dallas County, TX went without power for an average of 0.2 hours, a total of 185K customer-hours (Texas average 1.6 hours). That ranks 170th worst of 249 Texas counties and 2482nd of 2,786 nationally.
Compared with TX, the US and 2016
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallas County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 4, 2017 12:00 | December 10, 2017 08:30 | 5d 20h | 12,857 | 53K |
| 2 | December 18, 2017 13:00 | December 19, 2017 22:45 | 1d 9h | 4,213 | 16K |
| 3 | December 21, 2017 12:30 | December 28, 2017 10:45 | 6d 22h | 4,160 | 27K |
| 4 | December 10, 2017 13:00 | December 14, 2017 12:00 | 3d 23h | 2,614 | 13K |
| 5 | December 16, 2017 08:15 | December 18, 2017 12:00 | 2d 3h | 2,199 | 14K |
| 6 | November 25, 2017 08:00 | November 28, 2017 07:00 | 2d 23h | 2,184 | 7,114 |
| 7 | November 21, 2017 00:00 | November 25, 2017 06:15 | 4d 6h | 2,127 | 14K |
| 8 | November 30, 2017 13:00 | December 2, 2017 09:00 | 1d 20h | 1,964 | 9,670 |
| 9 | December 30, 2017 09:00 | December 31, 2017 00:15 | 15h 15m | 1,782 | 1,869 |
| 10 | November 28, 2017 11:15 | November 30, 2017 05:30 | 1d 18h | 1,348 | 4,711 |
Outage episodes by size in 2017: 20 reached 100+ customers, 12 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 Dallas County reported on EIA Form 861 for 2017, 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 |
| Farmers Electric Coop, Inc - (TX) | 2017 | 3.4 hrs | 1.95 | 2.2 hrs | 1.41 |
| Trinity Valley Elec Coop Inc | 2017 | 14.5 hrs | 2.55 | 3.7 hrs | 2.33 |
| HILCO Electric Cooperative, Inc. | 2017 | 3.1 hrs | 1.31 | 1.9 hrs | 1.20 |
| Texas-New Mexico Power Co | - | - | - | - | - |
| City of Garland - (TX) | - | - | - | - | - |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 948,355 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. Dallas County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dallas County, TX annual power outage report, 2017, 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/2017/texas/dallas-county