County annual report · FIPS 48121
2020 Denton County, TX Power Outage Report
In 2020, customers in Denton County, TX went without power for an average of 1.3 hours, a total of 431K customer-hours (Texas average 5.3 hours). That ranks 238th worst of 254 Texas counties and 2549th 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 Denton 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 | May 28, 2020 09:45 | May 28, 2020 11:00 | 1h 15m | 12,131 | 4,922 |
| 2 | August 16, 2020 21:30 | August 20, 2020 04:00 | 3d 6h | 11,824 | 64K |
| 3 | November 13, 2020 20:15 | November 15, 2020 02:00 | 1d 5h | 6,919 | 17K |
| 4 | July 12, 2020 07:30 | July 13, 2020 09:00 | 1d 1h | 6,155 | 27K |
| 5 | December 21, 2020 15:15 | December 21, 2020 23:15 | 8h | 5,972 | 2,519 |
| 6 | June 8, 2020 12:45 | June 9, 2020 07:45 | 19h | 5,779 | 16K |
| 7 | August 9, 2020 21:45 | August 10, 2020 04:15 | 6h 30m | 4,695 | 2,492 |
| 8 | January 11, 2020 00:45 | January 11, 2020 07:30 | 6h 45m | 4,290 | 3,926 |
| 9 | May 11, 2020 17:45 | May 11, 2020 21:00 | 3h 15m | 4,251 | 1,184 |
| 10 | August 30, 2020 09:45 | August 31, 2020 04:30 | 18h 45m | 4,078 | 12K |
Outage episodes by size in 2020: 192 reached 100+ customers, 61 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 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 |
| Tri-County Electric Coop, Inc (TX) | 2020 | 4.8 hrs | 1.74 | 3.1 hrs | 1.52 |
| Denton County Elec Coop, Inc | 2020 | 37 min | 0.62 | 32 min | 0.56 |
| Cooke County Elec Coop Assn | 2020 | 6.2 hrs | 1.80 | 1.6 hrs | 0.35 |
| City of Denton - (TX) | 2020 | 35 min | 0.63 | 35 min | 0.63 |
| 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 63% of Texas's customers in 2020; 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, 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/denton-county