County annual report · FIPS 48013
2021 Atascosa County, TX Power Outage Report
In 2021, customers in Atascosa County, TX went without power for an average of 21.8 hours, a total of 414K customer-hours (Texas average 21.0 hours). That ranks 128th worst of 252 Texas counties and 392nd 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 Atascosa 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 14, 2021 17:45 | February 21, 2021 03:15 | 6d 9h | 7,182 | 341K |
| 2 | March 13, 2021 10:30 | March 13, 2021 13:15 | 2h 45m | 5,904 | 14K |
| 3 | May 18, 2021 02:30 | May 20, 2021 22:00 | 2d 19h | 2,885 | 13K |
| 4 | July 8, 2021 20:45 | July 10, 2021 04:45 | 1d 8h | 2,870 | 5,453 |
| 5 | June 1, 2021 06:15 | June 1, 2021 20:45 | 14h 30m | 2,587 | 5,249 |
| 6 | April 24, 2021 00:30 | April 24, 2021 08:00 | 7h 30m | 1,825 | 3,267 |
| 7 | July 10, 2021 05:30 | July 10, 2021 16:30 | 11h | 1,208 | 1,584 |
| 8 | April 16, 2021 02:15 | April 16, 2021 05:45 | 3h 30m | 947 | 495 |
| 9 | May 16, 2021 12:00 | May 16, 2021 12:30 | 30m | 883 | 247 |
| 10 | May 26, 2021 08:45 | May 26, 2021 09:00 | 15m | 877 | 219 |
Outage episodes by size in 2021: 37 reached 100+ customers, 7 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 Atascosa 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 |
| Medina Electric Coop, Inc | 2021 | 38.0 hrs | 10.07 | 3.0 hrs | 2.55 |
| City of San Antonio - (TX) | 2021 | 2.9 hrs | 1.58 | 68 min | 1.01 |
| Karnes 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 ÷ 18,992 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. Atascosa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Atascosa 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/atascosa-county