County annual report · FIPS 47027
2021 Clay County, TN Power Outage Report
In 2021, customers in Clay County, TN went without power for an average of 12.2 hours, a total of 49K customer-hours (Tennessee average 3.7 hours). That ranks 4th worst of 84 Tennessee counties and 677th 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 Clay 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 2, 2021 12:15 | May 2, 2021 19:00 | 6h 45m | 4,703 | 27K |
| 2 | June 21, 2021 19:15 | June 22, 2021 00:15 | 5h | 1,606 | 728 |
| 3 | May 28, 2021 14:45 | May 28, 2021 15:30 | 45m | 1,541 | 782 |
| 4 | December 11, 2021 10:45 | December 11, 2021 21:30 | 10h 45m | 1,439 | 7,443 |
| 5 | May 24, 2021 21:15 | May 25, 2021 00:00 | 2h 45m | 977 | 1,223 |
| 6 | April 24, 2021 18:45 | April 24, 2021 21:00 | 2h 15m | 976 | 1,954 |
| 7 | December 22, 2021 18:00 | December 22, 2021 19:45 | 1h 45m | 976 | 1,146 |
| 8 | December 20, 2021 15:15 | December 20, 2021 16:15 | 1h | 974 | 974 |
| 9 | June 14, 2021 17:00 | June 14, 2021 20:00 | 3h | 667 | 878 |
| 10 | July 23, 2021 12:00 | July 23, 2021 15:30 | 3h 30m | 628 | 2,026 |
Outage episodes by size in 2021: 13 reached 100+ customers, 4 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 Clay 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 |
|---|---|---|---|---|---|
| Tri-County Elec Member Corp (TN) | 2021 | 4.2 hrs | 2.98 | 3.9 hrs | 2.89 |
| Upper Cumberland E M C | 2021 | 14.4 hrs | - | 2.0 hrs | - |
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 ÷ 4,055 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. Clay County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clay 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/clay-county