County annual report · FIPS 48339
2020 Montgomery County, TX Power Outage Report
In 2020, customers in Montgomery County, TX went without power for an average of 13.3 hours, a total of 3.1M customer-hours (Texas average 5.3 hours). That ranks 85th worst of 254 Texas counties and 618th 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 Montgomery 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 04:45 | August 31, 2020 05:30 | 6d | 115,841 | 1.8M |
| 2 | April 9, 2020 22:15 | April 13, 2020 05:00 | 3d 6h | 31,604 | 144K |
| 3 | July 22, 2020 11:15 | July 24, 2020 04:30 | 1d 17h | 12,014 | 9,167 |
| 4 | January 9, 2020 10:30 | January 13, 2020 03:00 | 3d 16h | 10,261 | 110K |
| 5 | June 21, 2020 16:45 | June 25, 2020 05:00 | 3d 12h | 9,575 | 50K |
| 6 | May 24, 2020 12:30 | May 30, 2020 10:45 | 5d 22h | 9,567 | 112K |
| 7 | November 28, 2020 05:30 | November 29, 2020 06:30 | 1d 1h | 6,940 | 37K |
| 8 | May 4, 2020 09:30 | May 5, 2020 09:45 | 1d | 6,116 | 7,635 |
| 9 | September 15, 2020 06:30 | September 17, 2020 06:30 | 2d | 6,050 | 14K |
| 10 | August 6, 2020 14:45 | August 9, 2020 03:45 | 2d 13h | 5,518 | 26K |
Outage episodes by size in 2020: 221 reached 100+ customers, 82 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 Montgomery 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 |
| Sam Houston Electric Coop Inc | 2020 | 13.0 hrs | - | 5.0 hrs | - |
| San Bernard Electric Coop, Inc | 2020 | 2.0 hrs | 1.22 | 1.7 hrs | 1.10 |
| 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 63% of Texas's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 230,040 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. Montgomery County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montgomery 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/montgomery-county