County annual report · FIPS 48181
2015 Grayson County, TX Power Outage Report
In 2015, customers in Grayson County, TX went without power for an average of 2.8 hours, a total of 146K customer-hours (Texas average 1.9 hours). That ranks 135th worst of 238 Texas counties and 968th of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Grayson County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 1, 2015 03:15 | June 1, 2015 07:45 | 4h 30m | 18,800 | 10K |
| 2 | April 9, 2015 08:30 | April 9, 2015 23:30 | 15h | 3,041 | 2,724 |
| 3 | June 30, 2015 06:15 | June 30, 2015 20:15 | 14h | 2,961 | 4,065 |
| 4 | June 19, 2015 09:30 | June 20, 2015 04:45 | 19h 15m | 2,909 | 13K |
| 5 | May 8, 2015 05:15 | May 12, 2015 02:45 | 3d 21h | 2,381 | 23K |
| 6 | May 16, 2015 21:00 | May 18, 2015 07:45 | 1d 10h | 2,284 | 18K |
| 7 | May 24, 2015 06:30 | May 25, 2015 01:45 | 19h 15m | 2,036 | 6,005 |
| 8 | June 17, 2015 14:45 | June 19, 2015 03:30 | 1d 12h | 1,652 | 11K |
| 9 | April 15, 2015 12:00 | April 15, 2015 17:00 | 5h | 1,445 | 1,495 |
| 10 | May 8, 2015 02:00 | May 8, 2015 04:15 | 2h 15m | 1,419 | 786 |
Outage episodes by size in 2015: 53 reached 100+ customers, 15 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 2015, 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 | 2015 | 4.5 hrs | 1.88 | 2.4 hrs | 1.36 |
| Denton County Elec Coop, Inc | 2015 | 35 min | 1.46 | 33 min | 1.42 |
| 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 n/a of Texas's customers in 2015; 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, 2015, 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/2015/texas/grayson-county