County annual report · FIPS 48245
2018 Jefferson County, TX Power Outage Report
In 2018, customers in Jefferson County, TX went without power for an average of 9.1 hours, a total of 470K customer-hours (Texas average 2.4 hours). That ranks 61st worst of 253 Texas counties and 620th 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 Jefferson 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 13, 2018 15:30 | April 15, 2018 02:30 | 1d 11h | 6,279 | 36K |
| 2 | August 4, 2018 18:15 | August 5, 2018 23:45 | 1d 5h | 4,949 | 4,166 |
| 3 | October 31, 2018 19:15 | November 2, 2018 03:15 | 1d 8h | 4,498 | 39K |
| 4 | May 22, 2018 14:00 | May 23, 2018 01:15 | 11h 15m | 4,204 | 4,831 |
| 5 | December 26, 2018 18:45 | December 28, 2018 03:15 | 1d 8h | 3,636 | 8,958 |
| 6 | March 28, 2018 18:45 | March 30, 2018 03:15 | 1d 8h | 3,387 | 15K |
| 7 | November 7, 2018 10:15 | November 9, 2018 09:00 | 1d 22h | 3,360 | 8,775 |
| 8 | February 10, 2018 06:30 | February 11, 2018 02:30 | 20h | 3,321 | 14K |
| 9 | September 12, 2018 13:45 | September 13, 2018 02:00 | 12h 15m | 2,842 | 7,912 |
| 10 | September 4, 2018 08:45 | September 5, 2018 11:15 | 1d 2h | 2,747 | 2,990 |
Outage episodes by size in 2018: 173 reached 100+ customers, 39 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 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 |
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 ÷ 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, 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/jefferson-county