County annual report · FIPS 48421
2015 Sherman County, TX Power Outage Report
In 2015, customers in Sherman County, TX went without power for an average of 10.8 hours, a total of 6,960 customer-hours (Texas average 1.9 hours). That ranks 34th worst of 238 Texas counties and 244th 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 Sherman 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 | May 31, 2015 15:15 | May 31, 2015 16:15 | 1h | 1,136 | 1,024 |
| 2 | July 31, 2015 12:45 | July 31, 2015 15:30 | 2h 45m | 1,112 | 2,229 |
| 3 | June 7, 2015 22:30 | June 8, 2015 06:15 | 7h 45m | 1,110 | 1,427 |
| 4 | December 13, 2015 17:15 | December 14, 2015 00:00 | 6h 45m | 433 | 630 |
| 5 | October 7, 2015 12:45 | October 7, 2015 19:15 | 6h 30m | 136 | 600 |
| 6 | May 9, 2015 12:30 | May 9, 2015 17:15 | 4h 45m | 56 | 109 |
| 7 | August 4, 2015 02:00 | August 4, 2015 10:45 | 8h 45m | 51 | 319 |
| 8 | August 17, 2015 07:45 | August 17, 2015 11:15 | 3h 30m | 37 | 120 |
| 9 | June 8, 2015 13:15 | June 8, 2015 15:30 | 2h 15m | 33 | 66 |
| 10 | June 8, 2015 18:30 | June 8, 2015 18:45 | 15m | 33 | 8 |
Outage episodes by size in 2015: 5 reached 100+ customers, 3 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 Sherman 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 |
|---|---|---|---|---|---|
| Southwestern Public Service Co | 2015 | 3.4 hrs | 1.53 | 2.1 hrs | 1.25 |
| Tri-County Electric Coop, Inc (OK) | - | - | - | - | - |
| Rita Blanca Electric Coop, Inc | - | - | - | - | - |
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 ÷ 643 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. Sherman County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sherman 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/sherman-county