County annual report · FIPS 48245
2020 Jefferson County, TX Power Outage Report
In 2020, customers in Jefferson County, TX went without power for an average of 196.5 hours, a total of 10.2M customer-hours (Texas average 5.3 hours). That ranks 3rd worst of 254 Texas counties and 19th of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Jefferson County, 2020
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 25, 2020 21:45 | September 6, 2020 06:15 | 11d 8h | 90,667 | 5.4M |
| 2 | October 9, 2020 13:15 | October 17, 2020 11:30 | 7d 22h | 75,222 | 4.0M |
| 3 | April 28, 2020 13:15 | May 2, 2020 08:00 | 3d 18h | 12,399 | 102K |
| 4 | August 5, 2020 20:15 | August 8, 2020 02:45 | 2d 6h | 8,895 | 92K |
| 5 | June 22, 2020 12:00 | June 23, 2020 18:00 | 1d 6h | 6,603 | 22K |
| 6 | April 13, 2020 12:00 | April 14, 2020 00:45 | 12h 45m | 6,383 | 5,029 |
| 7 | December 19, 2020 13:15 | December 21, 2020 03:45 | 1d 14h | 5,348 | 37K |
| 8 | February 20, 2020 15:00 | February 21, 2020 06:30 | 15h 30m | 5,047 | 4,826 |
| 9 | March 20, 2020 18:00 | March 21, 2020 01:30 | 7h 30m | 5,024 | 3,457 |
| 10 | May 26, 2020 08:15 | May 30, 2020 02:45 | 3d 18h | 4,548 | 43K |
Outage episodes by size in 2020: 196 reached 100+ customers, 51 reached 1,000+ customers, 3 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 2020, 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. | 2020 | 42.3 hrs | 3.27 | 4.6 hrs | 1.74 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 63% of Texas's customers in 2020; 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, 2020, 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/2020/texas/jefferson-county