County annual report · FIPS 48245
2015 Jefferson County, TX Power Outage Report
In 2015, customers in Jefferson County, TX went without power for an average of 7.9 hours, a total of 408K customer-hours (Texas average 1.9 hours). That ranks 50th worst of 238 Texas counties and 342nd of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Jefferson County, 2015
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 11, 2015 14:45 | August 13, 2015 02:45 | 1d 12h | 6,259 | 45K |
| 2 | April 27, 2015 01:00 | April 28, 2015 17:30 | 1d 16h | 3,144 | 20K |
| 3 | December 6, 2015 09:45 | December 6, 2015 20:15 | 10h 30m | 3,128 | 9,746 |
| 4 | April 20, 2015 01:30 | April 21, 2015 01:45 | 1d | 3,095 | 15K |
| 5 | June 1, 2015 16:45 | June 2, 2015 05:45 | 13h | 3,067 | 4,174 |
| 6 | May 20, 2015 15:00 | May 20, 2015 23:45 | 8h 45m | 2,810 | 3,325 |
| 7 | May 27, 2015 10:45 | May 28, 2015 04:15 | 17h 30m | 2,595 | 3,345 |
| 8 | August 13, 2015 03:45 | August 13, 2015 23:00 | 19h 15m | 2,561 | 2,650 |
| 9 | December 9, 2015 14:45 | December 10, 2015 01:15 | 10h 30m | 2,549 | 6,240 |
| 10 | April 23, 2015 22:30 | April 24, 2015 08:30 | 10h | 2,515 | 1,854 |
Outage episodes by size in 2015: 197 reached 100+ customers, 49 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 Jefferson County reported on EIA Form 861 for 2015, 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. | 2015 | 5.5 hrs | 2.06 | 3.4 hrs | 1.69 |
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 2015; 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, 2015, 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/2015/texas/jefferson-county