County annual report · FIPS 48293
2021 Limestone County, TX Power Outage Report
In 2021, customers in Limestone County, TX went without power for an average of 171.6 hours, a total of 728K customer-hours (Texas average 21.0 hours). That ranks 11th worst of 252 Texas counties and 35th 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 Limestone 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 15:45 | February 24, 2021 06:30 | 12d 14h | 7,299 | 638K |
| 2 | January 10, 2021 19:45 | January 12, 2021 22:15 | 2d 2h | 2,360 | 29K |
| 3 | June 8, 2021 12:15 | June 9, 2021 06:00 | 17h 45m | 2,136 | 3,692 |
| 4 | December 18, 2021 10:00 | December 19, 2021 07:30 | 21h 30m | 1,470 | 2,864 |
| 5 | October 28, 2021 15:00 | October 29, 2021 11:00 | 20h | 1,027 | 5,985 |
| 6 | August 18, 2021 10:30 | August 19, 2021 03:45 | 17h 15m | 930 | 1,551 |
| 7 | September 23, 2021 20:00 | September 23, 2021 22:00 | 2h | 834 | 268 |
| 8 | May 9, 2021 20:45 | May 10, 2021 17:30 | 20h 45m | 823 | 6,406 |
| 9 | June 7, 2021 16:00 | June 8, 2021 05:15 | 13h 15m | 783 | 2,254 |
| 10 | July 6, 2021 22:15 | July 7, 2021 06:45 | 8h 30m | 694 | 1,397 |
Outage episodes by size in 2021: 39 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 Limestone 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 |
| Entergy Texas Inc. | 2021 | 16.7 hrs | 3.31 | 4.7 hrs | 2.02 |
| Navasota Valley Elec Coop, Inc | 2021 | 527.1 hrs | 10.31 | 7.9 hrs | 3.41 |
| Navarro County Elec 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 ÷ 4,241 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. Limestone County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Limestone 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/limestone-county