County annual report · FIPS 48339
2015 Montgomery County, TX Power Outage Report
In 2015, customers in Montgomery County, TX went without power for an average of 3.7 hours, a total of 848K customer-hours (Texas average 1.9 hours). That ranks 110th worst of 238 Texas counties and 767th of 2,484 nationally.
Compared with TX, the US
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Montgomery County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 27, 2015 09:15 | April 30, 2015 05:15 | 2d 20h | 14,413 | 144K |
| 2 | September 28, 2015 12:45 | September 29, 2015 02:00 | 13h 15m | 11,866 | 8,186 |
| 3 | May 2, 2015 10:30 | May 2, 2015 20:00 | 9h 30m | 9,214 | 14K |
| 4 | May 27, 2015 09:15 | May 28, 2015 07:30 | 22h 15m | 6,835 | 36K |
| 5 | May 25, 2015 12:15 | May 27, 2015 06:15 | 1d 18h | 6,641 | 58K |
| 6 | July 21, 2015 21:15 | July 22, 2015 10:45 | 13h 30m | 6,621 | 3,208 |
| 7 | August 11, 2015 10:30 | August 13, 2015 05:15 | 1d 18h | 6,233 | 26K |
| 8 | January 26, 2015 18:15 | January 27, 2015 05:45 | 11h 30m | 4,905 | 7,312 |
| 9 | July 4, 2015 19:00 | July 5, 2015 06:30 | 11h 30m | 4,497 | 17K |
| 10 | January 12, 2015 17:00 | January 12, 2015 23:45 | 6h 45m | 4,092 | 1,810 |
Outage episodes by size in 2015: 287 reached 100+ customers, 68 reached 1,000+ customers, 2 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 2015, 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. | 2015 | 5.5 hrs | 2.06 | 3.4 hrs | 1.69 |
| CenterPoint Energy | 2015 | 4.3 hrs | 1.98 | 2.2 hrs | 1.33 |
| Sam Houston Electric Coop Inc | 2015 | 13.3 hrs | - | 6.7 hrs | - |
| San Bernard Electric Coop, Inc | 2015 | 4.6 hrs | 2.36 | 2.7 hrs | 1.81 |
| 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 n/a of Texas's customers in 2015; 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, 2015, 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/2015/texas/montgomery-county