County annual report · FIPS 48245
2017 Jefferson County, TX Power Outage Report
In 2017, customers in Jefferson County, TX went without power for an average of 47.3 hours, a total of 2.4M customer-hours (Texas average 1.6 hours). That ranks 6th worst of 249 Texas counties and 83rd of 2,786 nationally.
Compared with TX, the US and 2016
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Jefferson County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 27, 2017 04:15 | September 13, 2017 23:45 | 17d 19h | 20,255 | 2.1M |
| 2 | October 22, 2017 13:00 | October 23, 2017 06:30 | 17h 30m | 4,673 | 17K |
| 3 | December 8, 2017 09:00 | December 9, 2017 12:00 | 1d 3h | 4,614 | 12K |
| 4 | June 15, 2017 14:30 | June 15, 2017 20:00 | 5h 30m | 4,346 | 1,160 |
| 5 | March 29, 2017 15:30 | March 31, 2017 16:30 | 2d 1h | 4,235 | 14K |
| 6 | August 13, 2017 21:00 | August 14, 2017 09:30 | 12h 30m | 3,600 | 7,457 |
| 7 | March 25, 2017 02:45 | March 26, 2017 06:30 | 1d 3h | 3,450 | 21K |
| 8 | September 14, 2017 00:45 | September 19, 2017 10:15 | 5d 9h | 3,278 | 12K |
| 9 | July 7, 2017 11:30 | July 8, 2017 01:30 | 14h | 3,077 | 2,688 |
| 10 | March 16, 2017 20:15 | March 17, 2017 04:30 | 8h 15m | 3,031 | 12K |
Outage episodes by size in 2017: 176 reached 100+ customers, 50 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 Jefferson County reported on EIA Form 861 for 2017, 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. | 2017 | 23.3 hrs | 2.33 | 3.7 hrs | 1.60 |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 51,659 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, TX annual power outage report, 2017, 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/2017/texas/jefferson-county