County annual report · FIPS 48181
2018 Grayson County, TX Power Outage Report
In 2018, customers in Grayson County, TX went without power for an average of 3.3 hours, a total of 173K customer-hours (Texas average 2.4 hours). That ranks 137th worst of 253 Texas counties and 1411th of 2,798 nationally.
Compared with TX, the US and 2017
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Grayson County, 2018
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 21, 2018 11:15 | February 23, 2018 08:30 | 1d 21h | 6,835 | 44K |
| 2 | September 8, 2018 14:15 | September 8, 2018 20:15 | 6h | 3,093 | 5,942 |
| 3 | October 27, 2018 19:30 | October 28, 2018 01:30 | 6h | 2,407 | 3,030 |
| 4 | November 12, 2018 09:00 | November 12, 2018 12:15 | 3h 15m | 2,403 | 3,583 |
| 5 | October 12, 2018 11:30 | October 12, 2018 16:00 | 4h 30m | 2,165 | 2,950 |
| 6 | May 15, 2018 19:15 | May 16, 2018 01:15 | 6h | 2,129 | 2,493 |
| 7 | June 14, 2018 11:00 | June 14, 2018 19:15 | 8h 15m | 1,946 | 3,660 |
| 8 | June 7, 2018 20:30 | June 8, 2018 12:15 | 15h 45m | 1,943 | 5,961 |
| 9 | July 29, 2018 16:00 | July 29, 2018 19:30 | 3h 30m | 1,802 | 2,338 |
| 10 | March 2, 2018 14:45 | March 2, 2018 22:15 | 7h 30m | 1,798 | 931 |
Outage episodes by size in 2018: 102 reached 100+ customers, 25 reached 1,000+ customers, 0 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 2018, 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 | 2018 | 48 min | 0.50 | 40 min | 0.49 |
| Grayson-Collin Elec Coop, Inc | 2013 | 5.2 hrs | - | 2.1 hrs | - |
| Texas-New Mexico Power Co | - | - | - | - | - |
| Cooke County Elec Coop Assn | - | - | - | - | - |
| 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 90% of Texas's customers in 2018; 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, 2018, 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/2018/texas/grayson-county