County annual report · FIPS 48121
2025 Denton County, TX Power Outage Report
In 2025, customers in Denton County, TX went without power for an average of 3.3 hours, a total of 1.1M customer-hours (Texas average 4.6 hours). That ranks 214th worst of 254 Texas counties and 1952nd of 3,000 nationally.
Compared with TX, the US and 2024
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Denton County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 4, 2025 10:30 | March 8, 2025 09:45 | 3d 23h | 62,663 | 577K |
| 2 | February 14, 2025 11:30 | February 15, 2025 12:30 | 1d 1h | 10,665 | 25K |
| 3 | February 18, 2025 08:15 | February 20, 2025 07:00 | 1d 22h | 6,714 | 4,768 |
| 4 | May 24, 2025 22:15 | May 28, 2025 09:00 | 3d 10h | 5,414 | 16K |
| 5 | June 17, 2025 12:45 | June 18, 2025 04:30 | 15h 45m | 5,262 | 1,764 |
| 6 | May 18, 2025 16:30 | May 22, 2025 09:15 | 3d 16h | 5,225 | 28K |
| 7 | December 31, 2025 14:45 | January 1, 2026 00:00 | 9h 15m | 4,789 | 3,148 |
| 8 | July 3, 2025 05:15 | July 4, 2025 02:45 | 21h 30m | 4,643 | 7,106 |
| 9 | September 2, 2025 13:45 | September 3, 2025 02:45 | 13h | 4,254 | 2,451 |
| 10 | April 20, 2025 10:15 | April 22, 2025 00:45 | 1d 14h | 4,017 | 11K |
Outage episodes by size in 2025: 184 reached 100+ customers, 63 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 Denton County reported on EIA Form 861 for 2025, 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 |
| Tri-County Electric Coop, Inc (TX) | 2024 | 2.2 hrs | 1.42 | 1.8 hrs | 1.09 |
| Denton County Elec Coop, Inc | 2024 | 44 min | 0.58 | 27 min | 0.44 |
| Cooke County Elec Coop Assn | 2024 | 4.8 hrs | 1.81 | 3.0 hrs | 1.55 |
| City of Denton - (TX) | 2024 | 81 min | 0.58 | 23 min | 0.27 |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Wise Electric Coop Inc | - | - | - | - | - |
| City of Sanger - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 332,707 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. Denton County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Denton County, TX annual power outage report, 2025, 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/2025/texas/denton-county