County annual report · FIPS 48113
2020 Dallas County, TX Power Outage Report
In 2020, customers in Dallas County, TX went without power for an average of 2.9 hours, a total of 2.8M customer-hours (Texas average 5.3 hours). That ranks 200th worst of 254 Texas counties and 1893rd of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Dallas County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 8, 2020 11:45 | August 21, 2020 09:15 | 12d 21h | 50,830 | 542K |
| 2 | July 1, 2020 11:45 | July 20, 2020 07:45 | 18d 20h | 34,893 | 362K |
| 3 | December 2, 2020 11:00 | December 8, 2020 08:15 | 5d 21h | 18,536 | 34K |
| 4 | June 19, 2020 10:45 | June 25, 2020 10:45 | 6d | 11,297 | 171K |
| 5 | May 13, 2020 11:45 | May 19, 2020 11:30 | 5d 23h | 11,207 | 101K |
| 6 | April 11, 2020 12:45 | April 13, 2020 19:45 | 2d 7h | 9,420 | 54K |
| 7 | September 9, 2020 10:45 | September 20, 2020 05:00 | 10d 18h | 8,148 | 71K |
| 8 | April 27, 2020 10:15 | May 1, 2020 09:15 | 3d 23h | 8,057 | 77K |
| 9 | August 26, 2020 12:15 | September 5, 2020 11:00 | 9d 22h | 7,497 | 87K |
| 10 | January 1, 2020 00:00 | January 2, 2020 11:15 | 1d 11h | 6,928 | 8,202 |
Outage episodes by size in 2020: 109 reached 100+ customers, 78 reached 1,000+ customers, 5 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 2020, 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) | 2020 | 74 min | 1.03 | 60 min | 0.94 |
| Trinity Valley Elec Coop Inc | 2020 | 2.8 hrs | 2.49 | 2.3 hrs | 2.26 |
| HILCO Electric Cooperative, Inc. | 2020 | 2.4 hrs | 1.30 | 2.4 hrs | 1.29 |
| 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 63% of Texas's customers in 2020; 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, 2020, 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/2020/texas/dallas-county