County annual report · FIPS 48067
2021 Cass County, TX Power Outage Report
In 2021, customers in Cass County, TX went without power for an average of 10.3 hours, a total of 156K customer-hours (Texas average 21.0 hours). That ranks 190th worst of 252 Texas counties and 768th of 2,974 nationally.
Compared with TX, the US and 2020
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Cass County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 12, 2021 05:00 | July 12, 2021 09:45 | 4h 45m | 4,178 | 6,449 |
| 2 | July 25, 2021 08:30 | July 25, 2021 10:00 | 1h 30m | 4,168 | 4,649 |
| 3 | May 21, 2021 03:00 | May 21, 2021 22:45 | 19h 45m | 3,121 | 2,808 |
| 4 | August 2, 2021 00:15 | August 2, 2021 10:45 | 10h 30m | 3,031 | 7,247 |
| 5 | February 15, 2021 05:00 | February 17, 2021 01:00 | 1d 20h | 2,992 | 23K |
| 6 | September 20, 2021 20:15 | September 20, 2021 21:45 | 1h 30m | 1,754 | 1,328 |
| 7 | December 26, 2021 08:00 | December 26, 2021 14:15 | 6h 15m | 1,736 | 2,417 |
| 8 | February 14, 2021 10:15 | February 14, 2021 11:30 | 1h 15m | 1,734 | 1,379 |
| 9 | October 15, 2021 23:00 | October 16, 2021 11:30 | 12h 30m | 1,713 | 4,151 |
| 10 | November 16, 2021 10:30 | November 16, 2021 13:15 | 2h 45m | 1,675 | 2,006 |
Outage episodes by size in 2021: 105 reached 100+ customers, 18 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 Cass County reported on EIA Form 861 for 2021, 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 Electric Power Co | 2021 | 11.8 hrs | 2.41 | 5.1 hrs | 1.79 |
| Southwest Arkansas E C C | 2021 | 8.2 hrs | 1.79 | 5.8 hrs | 1.49 |
| Upshur Rural Elec Coop Corp | 2021 | 19.7 hrs | 5.61 | 16.7 hrs | 5.43 |
| Bowie-Cass 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 94% of Texas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,244 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass County, TX annual power outage report, 2021, 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/2021/texas/cass-county