County annual report · FIPS 48353
2021 Nolan County, TX Power Outage Report
In 2021, customers in Nolan County, TX went without power for an average of 21.4 hours, a total of 185K customer-hours (Texas average 21.0 hours). That ranks 129th worst of 252 Texas counties and 403rd 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 Nolan 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 11, 2021 08:00 | February 21, 2021 07:30 | 9d 23h | 2,396 | 116K |
| 2 | June 14, 2021 13:15 | June 15, 2021 05:00 | 15h 45m | 1,915 | 1,995 |
| 3 | September 17, 2021 17:45 | September 18, 2021 00:45 | 7h | 1,718 | 2,686 |
| 4 | June 22, 2021 16:15 | June 22, 2021 20:00 | 3h 45m | 1,653 | 2,760 |
| 5 | January 1, 2021 00:00 | January 2, 2021 02:45 | 1d 2h | 1,019 | 14K |
| 6 | July 5, 2021 05:45 | July 5, 2021 08:00 | 2h 15m | 616 | 1,386 |
| 7 | May 7, 2021 18:30 | May 8, 2021 14:00 | 19h 30m | 587 | 1,095 |
| 8 | February 24, 2021 14:45 | February 25, 2021 00:00 | 9h 15m | 565 | 2,121 |
| 9 | January 14, 2021 13:45 | January 14, 2021 20:45 | 7h | 513 | 732 |
| 10 | February 10, 2021 10:45 | February 11, 2021 04:45 | 18h | 512 | 1,824 |
Outage episodes by size in 2021: 44 reached 100+ customers, 5 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 Nolan 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 |
|---|---|---|---|---|---|
| Oncor Electric Delivery Company LLC | 2017 | 3.4 hrs | 1.69 | 2.4 hrs | 1.49 |
| AEP Texas North Company | 2021 | 18.9 hrs | 2.72 | 1.9 hrs | 1.24 |
| Concho Valley Elec Coop Inc | 2021 | 13.5 hrs | 3.90 | 9.1 hrs | 2.99 |
| Big Country Electric Coop, Inc | - | - | - | - | - |
| Taylor Electric Coop Inc - (TX) | - | - | - | - | - |
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 ÷ 8,654 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. Nolan County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Nolan 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/nolan-county