County annual report · FIPS 48185
2021 Grimes County, TX Power Outage Report
In 2021, customers in Grimes County, TX went without power for an average of 90.9 hours, a total of 284K customer-hours (Texas average 21.0 hours). That ranks 32nd worst of 252 Texas counties and 89th of 2,974 nationally.
Compared with TX, the US and 2020
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Grimes County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 14, 2021 23:30 | February 18, 2021 12:00 | 3d 12h | 9,116 | 196K |
| 2 | May 3, 2021 18:15 | May 3, 2021 23:15 | 5h | 3,569 | 6,384 |
| 3 | July 22, 2021 23:30 | July 23, 2021 09:30 | 10h | 3,190 | 12K |
| 4 | October 27, 2021 12:15 | October 27, 2021 19:15 | 7h | 2,264 | 4,278 |
| 5 | May 30, 2021 00:00 | May 30, 2021 03:45 | 3h 45m | 1,957 | 5,381 |
| 6 | May 21, 2021 09:00 | May 21, 2021 14:15 | 5h 15m | 1,912 | 2,926 |
| 7 | May 2, 2021 00:45 | May 2, 2021 01:30 | 45m | 1,732 | 585 |
| 8 | March 21, 2021 09:00 | March 21, 2021 10:30 | 1h 30m | 1,553 | 1,942 |
| 9 | June 15, 2021 13:00 | June 15, 2021 13:15 | 15m | 1,202 | 301 |
| 10 | June 16, 2021 00:15 | June 16, 2021 23:15 | 23h | 1,137 | 1,439 |
Outage episodes by size in 2021: 83 reached 100+ customers, 14 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 2021, 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. | 2021 | 16.7 hrs | 3.31 | 4.7 hrs | 2.02 |
| San Bernard Electric Coop, Inc | 2021 | 2.4 hrs | 1.36 | 1.8 hrs | 1.22 |
| 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 94% of Texas's customers in 2021; 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, 2021, 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/2021/texas/grimes-county