County annual report · FIPS 48491
2016 Williamson County, TX Power Outage Report
In 2016, customers in Williamson County, TX went without power for an average of 0.1 hours, a total of 37K customer-hours (Texas average 1.2 hours). That ranks 95th worst of 119 Texas counties and 2211th of 2,391 nationally.
Compared with TX, the US and 2015
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Williamson County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 27, 2016 13:15 | July 27, 2016 19:00 | 5h 45m | 1,534 | 5,530 |
| 2 | April 27, 2016 07:30 | April 28, 2016 22:00 | 1d 14h | 1,229 | 11K |
| 3 | October 26, 2016 16:45 | October 26, 2016 19:15 | 2h 30m | 812 | 206 |
| 4 | July 11, 2016 18:30 | July 11, 2016 20:00 | 1h 30m | 750 | 1,120 |
| 5 | August 31, 2016 13:15 | August 31, 2016 14:45 | 1h 30m | 742 | 1,113 |
| 6 | March 14, 2016 15:45 | March 14, 2016 17:15 | 1h 30m | 737 | 737 |
| 7 | October 19, 2016 13:45 | October 19, 2016 14:00 | 15m | 727 | 182 |
| 8 | February 23, 2016 16:30 | February 23, 2016 17:15 | 45m | 726 | 545 |
| 9 | August 14, 2016 09:30 | August 14, 2016 11:00 | 1h 30m | 718 | 971 |
| 10 | April 20, 2016 11:30 | April 20, 2016 15:15 | 3h 45m | 533 | 1,199 |
Outage episodes by size in 2016: 23 reached 100+ customers, 2 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 Williamson County reported on EIA Form 861 for 2016, 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 | 2016 | 3.4 hrs | 1.72 | 2.4 hrs | 1.43 |
| Bluebonnet Electric Coop, Inc | 2016 | 7.3 hrs | 1.70 | 3.3 hrs | 1.32 |
| Bartlett Electric Coop, Inc | 2016 | 2.8 hrs | 1.72 | 1.8 hrs | 1.07 |
| Austin Energy | 2016 | 85 min | 0.75 | 56 min | 0.64 |
| Pedernales Electric Coop, Inc | - | - | - | - | - |
| 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 2016; 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, 2016, 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/2016/texas/williamson-county