County annual report · FIPS 48201
2020 Harris County, TX Power Outage Report
In 2020, customers in Harris County, TX went without power for an average of 3.1 hours, a total of 5.6M customer-hours (Texas average 5.3 hours). That ranks 191st worst of 254 Texas counties and 1844th 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 Harris County, 2020
The 5 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 24, 2020 17:45 | August 30, 2020 12:30 | 127d 18h | 55,836 | 2.8M |
| 2 | August 30, 2020 13:30 | December 31, 2020 00:15 | 122d 10h | 43,649 | 1.6M |
| 3 | February 3, 2020 06:30 | April 24, 2020 06:15 | 80d 23h | 38,091 | 822K |
| 4 | January 1, 2020 00:00 | February 3, 2020 05:30 | 33d 5h | 37,061 | 416K |
| 5 | April 24, 2020 07:15 | April 24, 2020 16:30 | 9h 15m | 513 | 1,644 |
Outage episodes by size in 2020: 5 reached 100+ customers, 4 reached 1,000+ customers, 4 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 Harris 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 |
| CenterPoint Energy | 2020 | 3.8 hrs | 1.78 | 2.3 hrs | 1.32 |
| San Bernard Electric Coop, Inc | 2020 | 2.0 hrs | 1.22 | 1.7 hrs | 1.10 |
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 ÷ 1,827,686 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. Harris County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Harris 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/harris-county