County annual report · FIPS 48443
2021 Terrell County, TX Power Outage Report
In 2021, customers in Terrell County, TX went without power for an average of 54.8 hours, a total of 3,835 customer-hours (Texas average 21.0 hours). That ranks 58th worst of 252 Texas counties and 160th 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 Terrell 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 | May 27, 2021 23:00 | May 28, 2021 05:15 | 6h 15m | 579 | 3,360 |
| 2 | October 6, 2021 01:15 | October 6, 2021 02:45 | 1h 30m | 205 | 257 |
| 3 | July 23, 2021 23:30 | July 24, 2021 00:45 | 1h 15m | 94 | 72 |
| 4 | May 17, 2021 17:00 | May 17, 2021 18:00 | 1h | 14 | 14 |
| 5 | May 11, 2021 14:15 | May 11, 2021 17:15 | 3h | 12 | 36 |
| 6 | January 14, 2021 17:30 | January 14, 2021 18:45 | 1h 15m | 6 | 6 |
| 7 | January 2, 2021 17:00 | January 2, 2021 19:00 | 2h | 5 | 10 |
| 8 | January 6, 2021 16:45 | January 6, 2021 18:45 | 2h | 4 | 8 |
| 9 | March 14, 2021 11:30 | March 14, 2021 14:45 | 3h 15m | 3 | 7 |
| 10 | June 11, 2021 17:00 | June 11, 2021 17:30 | 30m | 3 | 1 |
Outage episodes by size in 2021: 2 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 Terrell 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 |
|---|---|---|---|---|---|
| Rio Grande Electric Coop, Inc | 2021 | 6.3 hrs | - | 5.3 hrs | - |
| Texas-New Mexico Power Co | - | - | - | - | - |
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 ÷ 70 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. Terrell County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Terrell 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/terrell-county