County annual report · FIPS 48473
2018 Waller County, TX Power Outage Report
In 2018, customers in Waller County, TX went without power for an average of 3.3 hours, a total of 61K customer-hours (Texas average 2.4 hours). That ranks 138th worst of 253 Texas counties and 1414th of 2,798 nationally.
Compared with TX, the US and 2017
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Waller County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 21, 2018 19:45 | April 23, 2018 14:00 | 1d 18h | 6,669 | 1,737 |
| 2 | June 13, 2018 16:30 | June 13, 2018 19:00 | 2h 30m | 2,660 | 1,992 |
| 3 | November 20, 2018 16:15 | November 20, 2018 21:15 | 5h | 1,845 | 1,391 |
| 4 | May 22, 2018 21:00 | May 22, 2018 22:15 | 1h 15m | 1,766 | 452 |
| 5 | October 26, 2018 19:00 | October 31, 2018 20:30 | 5d 1h | 1,511 | 1,683 |
| 6 | December 18, 2018 20:00 | December 19, 2018 05:15 | 9h 15m | 1,253 | 334 |
| 7 | January 16, 2018 10:45 | January 16, 2018 20:00 | 9h 15m | 1,244 | 4,720 |
| 8 | September 28, 2018 07:45 | September 28, 2018 18:30 | 10h 45m | 1,233 | 338 |
| 9 | July 31, 2018 14:00 | August 1, 2018 02:00 | 12h | 1,117 | 853 |
| 10 | January 11, 2018 16:00 | January 12, 2018 16:15 | 1d | 1,043 | 1,583 |
Outage episodes by size in 2018: 51 reached 100+ customers, 12 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 2018, 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. | 2018 | 4.3 hrs | 1.77 | 3.7 hrs | 1.67 |
| CenterPoint Energy | 2018 | 3.0 hrs | 1.62 | 2.3 hrs | 1.37 |
| San Bernard Electric Coop, Inc | 2018 | 1.7 hrs | 1.06 | 78 min | 0.94 |
| 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 90% of Texas's customers in 2018; 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, 2018, 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/2018/texas/waller-county