County annual report · FIPS 48423
2021 Smith County, TX Power Outage Report
In 2021, customers in Smith County, TX went without power for an average of 20.6 hours, a total of 2.7M customer-hours (Texas average 21.0 hours). That ranks 135th worst of 252 Texas counties and 421st 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 Smith 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 13, 2021 12:15 | February 21, 2021 02:30 | 7d 14h | 42,339 | 1.6M |
| 2 | January 10, 2021 13:45 | January 16, 2021 05:30 | 5d 15h | 18,487 | 423K |
| 3 | October 28, 2021 10:30 | October 31, 2021 06:45 | 2d 20h | 14,400 | 171K |
| 4 | May 27, 2021 22:45 | May 29, 2021 10:15 | 1d 11h | 6,053 | 32K |
| 5 | June 8, 2021 12:30 | June 9, 2021 09:15 | 20h 45m | 5,708 | 8,365 |
| 6 | August 14, 2021 16:00 | August 16, 2021 01:15 | 1d 9h | 4,836 | 17K |
| 7 | May 25, 2021 13:15 | May 26, 2021 05:15 | 16h | 3,627 | 9,475 |
| 8 | March 15, 2021 11:45 | March 16, 2021 23:15 | 1d 11h | 3,157 | 3,542 |
| 9 | August 17, 2021 09:45 | August 21, 2021 01:00 | 3d 15h | 3,131 | 22K |
| 10 | May 10, 2021 23:30 | May 13, 2021 06:30 | 2d 7h | 3,099 | 11K |
Outage episodes by size in 2021: 168 reached 100+ customers, 51 reached 1,000+ customers, 3 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 Smith 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 |
| Southwestern Electric Power Co | 2021 | 11.8 hrs | 2.41 | 5.1 hrs | 1.79 |
| Upshur Rural Elec Coop Corp | 2021 | 19.7 hrs | 5.61 | 16.7 hrs | 5.43 |
| Wood County Electric Coop, Inc | 2021 | 6.1 hrs | 2.81 | 3.7 hrs | 1.93 |
| Cherokee County Elec Coop Assn - (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 ÷ 129,054 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. Smith County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Smith 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/smith-county