County annual report · FIPS 48421
2019 Sherman County, TX Power Outage Report
In 2019, customers in Sherman County, TX went without power for an average of 5.1 hours, a total of 3,252 customer-hours (Texas average 4.9 hours). That ranks 134th worst of 254 Texas counties and 1087th of 2,945 nationally.
Compared with TX, the US and 2018
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Sherman County, 2019
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 5, 2019 01:45 | May 5, 2019 05:30 | 3h 45m | 372 | 156 |
| 2 | July 2, 2019 04:15 | July 2, 2019 04:45 | 30m | 301 | 151 |
| 3 | May 29, 2019 17:00 | May 29, 2019 21:00 | 4h | 290 | 658 |
| 4 | March 13, 2019 15:15 | March 15, 2019 01:30 | 1d 10h | 49 | 1,112 |
| 5 | August 12, 2019 21:30 | August 12, 2019 21:45 | 15m | 46 | 12 |
| 6 | January 19, 2019 16:15 | January 19, 2019 17:15 | 1h | 45 | 12 |
| 7 | March 24, 2019 16:00 | March 24, 2019 19:30 | 3h 30m | 35 | 54 |
| 8 | August 24, 2019 08:45 | August 24, 2019 13:00 | 4h 15m | 35 | 93 |
| 9 | September 20, 2019 10:15 | September 20, 2019 15:15 | 5h | 35 | 175 |
| 10 | August 7, 2019 16:15 | August 7, 2019 17:15 | 1h | 29 | 24 |
Outage episodes by size in 2019: 3 reached 100+ customers, 0 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 2019, 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 | 2018 | 2.0 hrs | 1.08 | 1.9 hrs | 1.06 |
| 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 93% of Texas's customers in 2019; 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, 2019, 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/2019/texas/sherman-county