County annual report · FIPS 48291
2021 Liberty County, TX Power Outage Report
In 2021, customers in Liberty County, TX went without power for an average of 36.0 hours, a total of 1.6M customer-hours (Texas average 21.0 hours). That ranks 87th worst of 252 Texas counties and 254th 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 Liberty 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 14, 2021 21:00 | February 21, 2021 03:45 | 6d 6h | 28,618 | 989K |
| 2 | October 1, 2021 07:30 | October 2, 2021 09:15 | 1d 1h | 8,120 | 7,559 |
| 3 | September 12, 2021 12:45 | September 22, 2021 03:15 | 9d 14h | 7,844 | 148K |
| 4 | November 19, 2021 12:45 | November 19, 2021 21:30 | 8h 45m | 6,450 | 32K |
| 5 | November 8, 2021 13:00 | November 9, 2021 03:30 | 14h 30m | 5,563 | 17K |
| 6 | July 13, 2021 12:15 | July 16, 2021 08:00 | 2d 19h | 4,366 | 8,193 |
| 7 | May 11, 2021 12:45 | May 13, 2021 03:30 | 1d 14h | 3,877 | 20K |
| 8 | January 18, 2021 13:45 | January 19, 2021 00:45 | 11h | 3,518 | 27K |
| 9 | January 10, 2021 03:45 | January 12, 2021 02:00 | 1d 22h | 3,495 | 3,039 |
| 10 | May 13, 2021 12:15 | May 21, 2021 02:45 | 7d 14h | 3,270 | 27K |
Outage episodes by size in 2021: 173 reached 100+ customers, 34 reached 1,000+ customers, 1 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 Liberty 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 |
|---|---|---|---|---|---|
| Entergy Texas Inc. | 2021 | 16.7 hrs | 3.31 | 4.7 hrs | 2.02 |
| CenterPoint Energy | 2021 | 39.4 hrs | 4.67 | 2.5 hrs | 1.42 |
| Sam Houston Electric Coop Inc | 2021 | 11.3 hrs | - | 4.3 hrs | - |
| City of Liberty - (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 ÷ 44,189 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. Liberty County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Liberty 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/liberty-county