County annual report · FIPS 47125
2020 Montgomery County, TN Power Outage Report
In 2020, customers in Montgomery County, TN went without power for an average of 2.0 hours, a total of 240K customer-hours (Tennessee average 6.5 hours). That ranks 56th worst of 84 Tennessee counties and 2253rd of 3,019 nationally.
Compared with TN, the US and 2019
Coverage line is EAGLE-I's share of Tennessee 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 | March 3, 2020 06:15 | March 3, 2020 12:45 | 6h 30m | 6,703 | 15K |
| 2 | May 3, 2020 16:30 | May 4, 2020 23:30 | 1d 7h | 6,549 | 22K |
| 3 | July 5, 2020 20:15 | July 6, 2020 05:30 | 9h 15m | 5,396 | 6,923 |
| 4 | March 29, 2020 03:15 | March 29, 2020 21:45 | 18h 30m | 4,698 | 5,825 |
| 5 | October 6, 2020 11:45 | October 7, 2020 03:15 | 15h 30m | 4,407 | 5,706 |
| 6 | May 2, 2020 18:15 | May 3, 2020 02:00 | 7h 45m | 3,693 | 3,715 |
| 7 | October 18, 2020 11:15 | October 18, 2020 14:30 | 3h 15m | 3,538 | 3,539 |
| 8 | July 16, 2020 15:00 | July 17, 2020 03:30 | 12h 30m | 3,528 | 1,177 |
| 9 | June 29, 2020 21:00 | June 30, 2020 01:15 | 4h 15m | 2,977 | 2,377 |
| 10 | April 9, 2020 01:00 | April 9, 2020 22:30 | 21h 30m | 2,912 | 7,806 |
Outage episodes by size in 2020: 139 reached 100+ customers, 40 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 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 |
|---|---|---|---|---|---|
| City of Dickson | 2020 | 15.9 hrs | 4.52 | 2.7 hrs | 3.74 |
| City of Clarksville - (TN) | 2020 | 3.2 hrs | 1.91 | 1.7 hrs | 1.27 |
| Cumberland Elec Member Corp | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 73% of Tennessee's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 119,925 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, TN 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/tennessee/montgomery-county