County annual report · FIPS 48181
2020 Grayson County, TX Power Outage Report
In 2020, customers in Grayson County, TX went without power for an average of 4.3 hours, a total of 227K customer-hours (Texas average 5.3 hours). That ranks 169th worst of 254 Texas counties and 1536th 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 Grayson 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 16, 2020 17:15 | August 18, 2020 08:45 | 1d 15h | 10,168 | 49K |
| 2 | May 23, 2020 04:30 | May 26, 2020 21:00 | 3d 16h | 5,312 | 41K |
| 3 | July 30, 2020 20:15 | August 1, 2020 06:00 | 1d 9h | 4,483 | 36K |
| 4 | December 7, 2020 23:15 | December 8, 2020 05:15 | 6h | 2,549 | 3,637 |
| 5 | July 12, 2020 06:45 | July 12, 2020 22:15 | 15h 30m | 2,043 | 5,750 |
| 6 | June 19, 2020 23:45 | June 21, 2020 00:15 | 1d | 2,039 | 5,437 |
| 7 | April 29, 2020 04:00 | April 30, 2020 04:45 | 1d | 1,974 | 2,897 |
| 8 | September 1, 2020 15:15 | September 3, 2020 02:15 | 1d 11h | 1,917 | 4,252 |
| 9 | March 19, 2020 13:00 | March 20, 2020 04:00 | 15h | 1,896 | 8,003 |
| 10 | June 22, 2020 07:30 | June 22, 2020 19:15 | 11h 45m | 1,532 | 5,600 |
Outage episodes by size in 2020: 75 reached 100+ customers, 12 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 Grayson 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 |
| 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 |
| Grayson-Collin Elec Coop, Inc | 2013 | 5.2 hrs | - | 2.1 hrs | - |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Fannin County Electric Coop | - | - | - | - | - |
| City of Whitesboro - (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 ÷ 52,508 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. Grayson County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Grayson 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/grayson-county