County annual report · FIPS 48421
2017 Sherman County, TX Power Outage Report
In 2017, customers in Sherman County, TX went without power for an average of 58.1 hours, a total of 37K customer-hours (Texas average 1.6 hours). That ranks 4th worst of 249 Texas counties and 50th of 2,786 nationally.
Compared with TX, the US and 2016
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Sherman County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 30, 2017 05:45 | May 2, 2017 04:15 | 1d 22h | 1,215 | 33K |
| 2 | April 11, 2017 12:30 | April 11, 2017 14:15 | 1h 45m | 1,149 | 1,158 |
| 3 | September 2, 2017 08:00 | September 2, 2017 08:15 | 15m | 641 | 160 |
| 4 | August 28, 2017 02:00 | August 28, 2017 20:45 | 18h 45m | 325 | 1,085 |
| 5 | May 28, 2017 02:45 | May 28, 2017 14:30 | 11h 45m | 294 | 495 |
| 6 | April 29, 2017 12:45 | April 29, 2017 21:30 | 8h 45m | 46 | 295 |
| 7 | July 3, 2017 02:15 | July 3, 2017 10:30 | 8h 15m | 45 | 371 |
| 8 | June 21, 2017 12:00 | June 22, 2017 10:30 | 22h 30m | 42 | 698 |
| 9 | October 7, 2017 03:45 | October 7, 2017 12:15 | 8h 30m | 33 | 65 |
| 10 | August 25, 2017 02:15 | August 25, 2017 02:30 | 15m | 19 | 5 |
Outage episodes by size in 2017: 5 reached 100+ customers, 2 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 2017, 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 | 2017 | 3.9 hrs | 1.25 | 1.7 hrs | 1.05 |
| 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 2017; 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, 2017, 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/2017/texas/sherman-county