County annual report · FIPS 48491
2024 Williamson County, TX Power Outage Report
In 2024, customers in Williamson County, TX went without power for an average of 2.3 hours, a total of 675K customer-hours (Texas average 25.5 hours). That ranks 215th worst of 252 Texas counties and 2335th of 2,990 nationally.
Compared with TX, the US and 2023
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Williamson County, 2024
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 28, 2024 13:45 | June 3, 2024 06:30 | 5d 16h | 11,078 | 90K |
| 2 | May 14, 2024 13:00 | May 18, 2024 06:00 | 3d 17h | 10,717 | 54K |
| 3 | May 10, 2024 00:45 | May 14, 2024 03:45 | 4d 3h | 7,014 | 36K |
| 4 | November 30, 2024 14:30 | December 1, 2024 08:15 | 17h 45m | 6,724 | 14K |
| 5 | August 6, 2024 13:30 | August 9, 2024 08:15 | 2d 18h | 6,393 | 20K |
| 6 | April 3, 2024 12:15 | April 4, 2024 01:00 | 12h 45m | 6,025 | 1,737 |
| 7 | November 4, 2024 05:30 | November 6, 2024 09:15 | 2d 3h | 5,842 | 16K |
| 8 | November 13, 2024 14:15 | November 13, 2024 21:45 | 7h 30m | 5,223 | 7,209 |
| 9 | September 25, 2024 10:45 | September 26, 2024 01:30 | 14h 45m | 5,156 | 9,754 |
| 10 | August 9, 2024 12:30 | August 10, 2024 21:45 | 1d 9h | 5,005 | 2,802 |
Outage episodes by size in 2024: 220 reached 100+ customers, 89 reached 1,000+ customers, 2 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 Williamson County reported on EIA Form 861 for 2024, 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 |
| Pedernales Electric Coop, Inc | 2024 | 57 min | 0.79 | 57 min | 0.79 |
| Bluebonnet Electric Coop, Inc | 2024 | 3.8 hrs | 1.75 | 2.0 hrs | 1.28 |
| Bartlett Electric Coop, Inc | 2024 | 3.2 hrs | 1.50 | 2.3 hrs | 1.15 |
| Austin Energy | 2024 | 1.5 hrs | 0.96 | 76 min | 0.87 |
| City of Bartlett - (TX) | - | - | - | - | - |
| City of Georgetown - (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 n/a of Texas's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 299,583 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. Williamson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Williamson County, TX annual power outage report, 2024, 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/2024/texas/williamson-county