County annual report · FIPS 48201
2018 Harris County, TX Power Outage Report
In 2018, customers in Harris County, TX went without power for an average of 2.3 hours, a total of 4.2M customer-hours (Texas average 2.4 hours). That ranks 173rd worst of 253 Texas counties and 1712th 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 Harris 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 | March 6, 2018 03:15 | May 24, 2018 23:15 | 79d 20h | 25,183 | 942K |
| 2 | January 1, 2018 00:00 | January 25, 2018 14:30 | 24d 14h | 15,504 | 317K |
| 3 | July 19, 2018 00:15 | August 9, 2018 22:30 | 21d 22h | 15,285 | 223K |
| 4 | August 19, 2018 00:45 | September 14, 2018 21:45 | 26d 21h | 13,689 | 340K |
| 5 | November 10, 2018 15:00 | December 14, 2018 20:15 | 34d 5h | 13,444 | 357K |
| 6 | May 27, 2018 14:15 | June 9, 2018 07:15 | 12d 17h | 13,036 | 240K |
| 7 | September 15, 2018 04:00 | November 10, 2018 11:45 | 56d 7h | 12,430 | 566K |
| 8 | June 9, 2018 10:45 | July 18, 2018 23:15 | 39d 12h | 11,380 | 684K |
| 9 | December 17, 2018 06:30 | December 23, 2018 10:30 | 6d 4h | 8,019 | 78K |
| 10 | December 23, 2018 11:45 | December 31, 2018 00:15 | 7d 12h | 7,717 | 51K |
Outage episodes by size in 2018: 19 reached 100+ customers, 17 reached 1,000+ customers, 8 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 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 |
| CenterPoint Energy | 2018 | 3.0 hrs | 1.62 | 2.3 hrs | 1.37 |
| San Bernard Electric Coop, Inc | 2018 | 1.7 hrs | 1.06 | 78 min | 0.94 |
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 ÷ 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, 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/harris-county