County annual report · FIPS 48097
2021 Cooke County, TX Power Outage Report
In 2021, customers in Cooke County, TX went without power for an average of 54.5 hours, a total of 919K customer-hours (Texas average 21.0 hours). That ranks 60th worst of 252 Texas counties and 162nd of 2,974 nationally.
Compared with TX, the US and 2020
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Cooke County, 2021
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 15, 2021 05:45 | February 18, 2021 16:30 | 3d 10h | 15,729 | 842K |
| 2 | August 7, 2021 18:45 | August 7, 2021 20:30 | 1h 45m | 1,793 | 2,238 |
| 3 | April 8, 2021 14:30 | April 8, 2021 23:45 | 9h 15m | 1,713 | 815 |
| 4 | July 25, 2021 15:15 | July 25, 2021 20:45 | 5h 30m | 1,311 | 1,384 |
| 5 | November 17, 2021 15:15 | November 17, 2021 22:15 | 7h | 911 | 300 |
| 6 | October 28, 2021 15:30 | October 28, 2021 23:15 | 7h 45m | 832 | 384 |
| 7 | October 27, 2021 08:30 | October 27, 2021 20:45 | 12h 15m | 789 | 3,166 |
| 8 | January 17, 2021 00:30 | January 17, 2021 02:15 | 1h 45m | 784 | 1,371 |
| 9 | June 3, 2021 14:30 | June 3, 2021 16:45 | 2h 15m | 770 | 578 |
| 10 | April 7, 2021 14:45 | April 7, 2021 15:30 | 45m | 727 | 182 |
Outage episodes by size in 2021: 65 reached 100+ customers, 4 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 Cooke County reported on EIA Form 861 for 2021, 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 |
| Denton County Elec Coop, Inc | 2021 | 17.2 hrs | - | 41 min | 0.63 |
| Cooke County Elec Coop Assn | 2021 | 1.8 hrs | 1.06 | 1.8 hrs | - |
| Grayson-Collin Elec Coop, Inc | 2013 | 5.2 hrs | - | 2.1 hrs | - |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Wise Electric 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 94% of Texas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,852 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. Cooke County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Cooke County, TX annual power outage report, 2021, 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/2021/texas/cooke-county