County annual report · FIPS 48473
2020 Waller County, TX Power Outage Report
In 2020, customers in Waller County, TX went without power for an average of 5.9 hours, a total of 109K customer-hours (Texas average 5.3 hours). That ranks 152nd worst of 254 Texas counties and 1254th of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Waller County, 2020
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, 2020 06:30 | May 29, 2020 04:45 | 1d 22h | 5,918 | 21K |
| 2 | November 27, 2020 19:00 | December 28, 2020 20:30 | 31d 1h | 3,998 | 12K |
| 3 | October 16, 2020 10:30 | October 23, 2020 18:00 | 7d 7h | 3,718 | 2,605 |
| 4 | August 28, 2020 17:30 | August 30, 2020 02:45 | 1d 9h | 3,641 | 3,537 |
| 5 | April 24, 2020 19:00 | May 16, 2020 20:15 | 22d 1h | 1,354 | 10K |
| 6 | April 16, 2020 16:00 | April 23, 2020 05:00 | 6d 13h | 1,250 | 3,238 |
| 7 | May 24, 2020 17:15 | May 25, 2020 19:00 | 1d 1h | 1,109 | 1,681 |
| 8 | March 31, 2020 13:15 | March 31, 2020 22:00 | 8h 45m | 1,085 | 561 |
| 9 | February 19, 2020 16:30 | February 19, 2020 19:00 | 2h 30m | 1,081 | 277 |
| 10 | September 5, 2020 22:15 | September 6, 2020 11:15 | 13h | 1,041 | 2,377 |
Outage episodes by size in 2020: 47 reached 100+ customers, 10 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 Waller County reported on EIA Form 861 for 2020, 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. | 2020 | 42.3 hrs | 3.27 | 4.6 hrs | 1.74 |
| CenterPoint Energy | 2020 | 3.8 hrs | 1.78 | 2.3 hrs | 1.32 |
| San Bernard Electric Coop, Inc | 2020 | 2.0 hrs | 1.22 | 1.7 hrs | 1.10 |
| Mid-South Electric Coop Assn | - | - | - | - | - |
| City of Hempstead - (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 63% of Texas's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 18,532 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. Waller County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Waller County, TX annual power outage report, 2020, 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/2020/texas/waller-county