County annual report · FIPS 48113
2015 Dallas County, TX Power Outage Report
In 2015, customers in Dallas County, TX went without power for an average of 2.2 hours, a total of 2.1M customer-hours (Texas average 1.9 hours). That ranks 152nd worst of 238 Texas counties and 1169th of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallas County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 8, 2015 05:15 | June 7, 2015 01:30 | 29d 20h | 23,536 | 906K |
| 2 | June 7, 2015 02:15 | June 29, 2015 09:00 | 22d 6h | 16,243 | 373K |
| 3 | July 14, 2015 12:00 | July 17, 2015 09:30 | 2d 21h | 8,767 | 28K |
| 4 | May 7, 2015 23:15 | May 8, 2015 04:15 | 5h | 8,735 | 2,481 |
| 5 | April 12, 2015 15:45 | April 21, 2015 09:30 | 8d 17h | 7,485 | 88K |
| 6 | April 24, 2015 11:00 | May 4, 2015 08:15 | 9d 21h | 6,692 | 80K |
| 7 | May 4, 2015 10:45 | May 7, 2015 22:30 | 3d 11h | 6,608 | 28K |
| 8 | July 7, 2015 03:15 | July 10, 2015 11:45 | 3d 8h | 4,643 | 22K |
| 9 | June 29, 2015 11:00 | July 7, 2015 01:45 | 7d 14h | 4,527 | 49K |
| 10 | January 21, 2015 12:45 | January 26, 2015 17:30 | 5d 4h | 4,491 | 31K |
Outage episodes by size in 2015: 40 reached 100+ customers, 32 reached 1,000+ customers, 2 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 2015, 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 | 2015 | 4.5 hrs | 1.88 | 2.4 hrs | 1.36 |
| Farmers Electric Coop, Inc - (TX) | 2015 | 3.5 hrs | 1.75 | 2.0 hrs | 1.29 |
| Trinity Valley Elec Coop Inc | 2015 | 5.8 hrs | 3.39 | 5.8 hrs | 3.39 |
| HILCO Electric Cooperative, Inc. | 2015 | 11.9 hrs | 2.13 | 4.7 hrs | 1.59 |
| 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 2015; 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, 2015, 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/2015/texas/dallas-county