County annual report · FIPS 48505
2021 Zapata County, TX Power Outage Report
In 2021, customers in Zapata County, TX went without power for an average of 61.3 hours, a total of 492K customer-hours (Texas average 21.0 hours). That ranks 52nd worst of 252 Texas counties and 141st 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 Zapata 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 08:00 | February 21, 2021 05:00 | 5d 21h | 6,300 | 417K |
| 2 | August 3, 2021 05:15 | August 3, 2021 21:30 | 16h 15m | 3,333 | 10K |
| 3 | May 11, 2021 19:30 | May 14, 2021 22:15 | 3d 2h | 1,691 | 27K |
| 4 | January 20, 2021 12:45 | January 20, 2021 19:00 | 6h 15m | 1,552 | 3,525 |
| 5 | October 13, 2021 20:30 | October 13, 2021 21:45 | 1h 15m | 1,545 | 1,927 |
| 6 | September 7, 2021 21:00 | September 8, 2021 04:30 | 7h 30m | 1,097 | 4,127 |
| 7 | November 4, 2021 02:15 | November 4, 2021 18:45 | 16h 30m | 864 | 4,918 |
| 8 | May 18, 2021 09:45 | May 21, 2021 22:15 | 3d 12h | 549 | 6,210 |
| 9 | April 12, 2021 14:00 | April 12, 2021 15:45 | 1h 45m | 548 | 385 |
| 10 | February 24, 2021 12:15 | February 24, 2021 14:15 | 2h | 543 | 818 |
Outage episodes by size in 2021: 25 reached 100+ customers, 6 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 Zapata 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 |
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 ÷ 8,025 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. Zapata County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Zapata 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/zapata-county