County annual report · FIPS 48339
2018 Montgomery County, TX Power Outage Report
In 2018, customers in Montgomery County, TX went without power for an average of 3.5 hours, a total of 797K customer-hours (Texas average 2.4 hours). That ranks 133rd worst of 253 Texas counties and 1378th 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 Montgomery 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 | June 3, 2018 10:45 | June 6, 2018 03:00 | 2d 16h | 9,591 | 88K |
| 2 | May 20, 2018 08:15 | May 22, 2018 09:15 | 2d 1h | 9,310 | 40K |
| 3 | August 11, 2018 14:15 | August 12, 2018 05:30 | 15h 15m | 7,249 | 5,812 |
| 4 | August 18, 2018 19:45 | August 19, 2018 05:15 | 9h 30m | 6,185 | 7,285 |
| 5 | April 13, 2018 08:00 | April 15, 2018 08:30 | 2d | 5,758 | 47K |
| 6 | July 4, 2018 08:45 | July 8, 2018 08:15 | 3d 23h | 5,505 | 20K |
| 7 | June 11, 2018 06:15 | June 12, 2018 08:45 | 1d 2h | 5,455 | 5,472 |
| 8 | June 12, 2018 09:30 | June 15, 2018 10:45 | 3d 1h | 5,240 | 13K |
| 9 | July 26, 2018 10:45 | July 28, 2018 01:45 | 1d 15h | 4,716 | 4,460 |
| 10 | May 1, 2018 11:45 | May 2, 2018 02:15 | 14h 30m | 4,452 | 2,171 |
Outage episodes by size in 2018: 201 reached 100+ customers, 61 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 Montgomery 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 |
| Sam Houston Electric Coop Inc | 2018 | 7.6 hrs | - | 5.2 hrs | - |
| 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 ÷ 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, 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/montgomery-county