County annual report · FIPS 47035
2021 Cumberland County, TN Power Outage Report
In 2021, customers in Cumberland County, TN went without power for an average of 4.0 hours, a total of 146K customer-hours (Tennessee average 3.7 hours). That ranks 33rd worst of 84 Tennessee counties and 1532nd of 2,974 nationally.
Compared with TN, the US and 2020
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Cumberland 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 | May 16, 2021 11:15 | May 16, 2021 14:15 | 3h | 8,575 | 4,023 |
| 2 | June 5, 2021 20:30 | June 5, 2021 22:15 | 1h 45m | 5,797 | 2,786 |
| 3 | February 7, 2021 05:30 | February 8, 2021 05:45 | 1d | 3,817 | 40K |
| 4 | May 25, 2021 17:45 | May 26, 2021 01:30 | 7h 45m | 2,674 | 8,036 |
| 5 | June 12, 2021 23:00 | June 13, 2021 15:00 | 16h | 2,652 | 8,289 |
| 6 | November 11, 2021 16:45 | November 12, 2021 02:45 | 10h | 2,369 | 5,825 |
| 7 | March 8, 2021 17:30 | March 8, 2021 19:00 | 1h 30m | 1,905 | 770 |
| 8 | June 21, 2021 16:30 | June 22, 2021 14:15 | 21h 45m | 1,865 | 7,819 |
| 9 | September 22, 2021 06:30 | September 22, 2021 13:15 | 6h 45m | 1,805 | 2,602 |
| 10 | August 29, 2021 13:15 | August 29, 2021 14:45 | 1h 30m | 1,732 | 1,354 |
Outage episodes by size in 2021: 98 reached 100+ customers, 25 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 Cumberland 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 |
|---|---|---|---|---|---|
| Volunteer Electric Coop | 2021 | 8.6 hrs | 5.13 | 5.3 hrs | 4.64 |
| Sequachee Valley Electric Coop | 2021 | 5.8 hrs | 3.71 | 4.5 hrs | 3.34 |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 36,171 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. Cumberland County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Cumberland County, TN 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/tennessee/cumberland-county