County annual report · FIPS 48507
2021 Zavala County, TX Power Outage Report
In 2021, customers in Zavala County, TX went without power for an average of 2.6 hours, a total of 173K customer-hours (Texas average 21.0 hours). That ranks 238th worst of 252 Texas counties and 2011th 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 Zavala 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 | February 15, 2021 07:45 | February 19, 2021 15:45 | 4d 8h | 2,560 | 135K |
| 2 | April 28, 2021 13:45 | May 1, 2021 05:45 | 2d 16h | 1,317 | 12K |
| 3 | September 6, 2021 23:15 | September 7, 2021 01:45 | 2h 30m | 1,038 | 527 |
| 4 | February 3, 2021 00:30 | February 3, 2021 00:45 | 15m | 1,028 | 257 |
| 5 | December 2, 2021 02:45 | December 2, 2021 04:45 | 2h | 715 | 1,220 |
| 6 | January 1, 2021 14:45 | January 1, 2021 22:30 | 7h 45m | 686 | 1,565 |
| 7 | May 11, 2021 01:15 | May 12, 2021 07:00 | 1d 5h | 603 | 2,516 |
| 8 | June 1, 2021 06:45 | June 2, 2021 21:15 | 1d 14h | 461 | 2,339 |
| 9 | August 5, 2021 05:30 | August 6, 2021 22:15 | 1d 16h | 385 | 1,557 |
| 10 | July 20, 2021 11:00 | July 20, 2021 21:00 | 10h | 338 | 1,169 |
Outage episodes by size in 2021: 29 reached 100+ customers, 4 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 Zavala 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 |
|---|---|---|---|---|---|
| AEP Texas Central Company | 2021 | 31.7 hrs | 3.36 | 3.1 hrs | 1.61 |
| Rio Grande Electric Coop, Inc | 2021 | 6.3 hrs | - | 5.3 hrs | - |
| Medina Electric Coop, Inc | 2021 | 38.0 hrs | 10.07 | 3.0 hrs | 2.55 |
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 ÷ 67,532 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. Zavala County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Zavala 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/zavala-county