County annual report · FIPS 47041
2021 DeKalb County, TN Power Outage Report
In 2021, customers in DeKalb County, TN went without power for an average of 1.0 hours, a total of 10K customer-hours (Tennessee average 3.7 hours). That ranks 66th worst of 84 Tennessee counties and 2673rd 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 DeKalb 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 | December 11, 2021 10:15 | December 11, 2021 17:00 | 6h 45m | 1,251 | 8,444 |
| 2 | February 21, 2021 15:00 | February 21, 2021 16:45 | 1h 45m | 533 | 138 |
| 3 | June 29, 2021 19:45 | June 29, 2021 21:00 | 1h 15m | 533 | 533 |
| 4 | December 6, 2021 16:30 | December 6, 2021 18:45 | 2h 15m | 170 | 298 |
| 5 | April 21, 2021 03:15 | April 21, 2021 04:30 | 1h 15m | 72 | 89 |
| 6 | February 16, 2021 00:15 | February 16, 2021 06:00 | 5h 45m | 33 | 53 |
| 7 | January 19, 2021 21:30 | January 19, 2021 22:45 | 1h 15m | 32 | 40 |
| 8 | February 18, 2021 02:45 | February 18, 2021 15:15 | 12h 30m | 32 | 113 |
| 9 | May 28, 2021 17:15 | May 28, 2021 18:45 | 1h 30m | 32 | 48 |
| 10 | September 22, 2021 09:30 | September 22, 2021 12:45 | 3h 15m | 32 | 104 |
Outage episodes by size in 2021: 4 reached 100+ customers, 1 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 DeKalb 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 |
|---|---|---|---|---|---|
| Middle Tennessee E M C | 2021 | 65 min | 1.00 | 55 min | 0.96 |
| Upper Cumberland E M C | 2021 | 14.4 hrs | - | 2.0 hrs | - |
| Caney Fork Electric Coop, Inc | - | - | - | - | - |
| City of Smithville - (TN) | - | - | - | - | - |
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 ÷ 10,381 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. DeKalb County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), DeKalb 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/dekalb-county