County annual report · FIPS 48185
2018 Grimes County, TX Power Outage Report
In 2018, customers in Grimes County, TX went without power for an average of 25.9 hours, a total of 81K customer-hours (Texas average 2.4 hours). That ranks 11th worst of 253 Texas counties and 214th 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 Grimes 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 | December 11, 2018 10:45 | December 11, 2018 18:00 | 7h 15m | 2,704 | 5,898 |
| 2 | August 3, 2018 15:30 | August 4, 2018 18:15 | 1d 2h | 1,791 | 25K |
| 3 | March 18, 2018 23:45 | March 20, 2018 00:00 | 1d | 1,392 | 13K |
| 4 | January 17, 2018 11:45 | January 17, 2018 18:00 | 6h 15m | 1,060 | 3,606 |
| 5 | June 4, 2018 02:00 | June 4, 2018 17:45 | 15h 45m | 931 | 5,516 |
| 6 | August 8, 2018 21:15 | August 9, 2018 00:30 | 3h 15m | 875 | 801 |
| 7 | June 23, 2018 03:45 | June 23, 2018 04:00 | 15m | 812 | 203 |
| 8 | March 29, 2018 09:45 | March 29, 2018 10:00 | 15m | 790 | 198 |
| 9 | May 20, 2018 21:45 | May 21, 2018 07:15 | 9h 30m | 757 | 1,958 |
| 10 | January 16, 2018 08:30 | January 16, 2018 15:00 | 6h 30m | 641 | 1,007 |
Outage episodes by size in 2018: 26 reached 100+ customers, 4 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 Grimes 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 |
| San Bernard Electric Coop, Inc | 2018 | 1.7 hrs | 1.06 | 78 min | 0.94 |
| Mid-South Electric Coop Assn | - | - | - | - | - |
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 ÷ 3,131 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. Grimes County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grimes 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/grimes-county