County annual report · FIPS 47105
2021 Loudon County, TN Power Outage Report
In 2021, customers in Loudon County, TN went without power for an average of 3.2 hours, a total of 89K customer-hours (Tennessee average 3.7 hours). That ranks 41st worst of 84 Tennessee counties and 1773rd 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 Loudon 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 | October 1, 2021 12:30 | October 1, 2021 15:15 | 2h 45m | 4,474 | 6,130 |
| 2 | May 28, 2021 11:30 | May 30, 2021 03:45 | 1d 16h | 2,428 | 3,939 |
| 3 | September 7, 2021 13:00 | September 8, 2021 01:15 | 12h 15m | 2,322 | 7,080 |
| 4 | September 23, 2021 16:45 | September 23, 2021 20:45 | 4h | 2,272 | 1,134 |
| 5 | June 27, 2021 06:30 | June 27, 2021 21:30 | 15h | 2,131 | 2,937 |
| 6 | January 23, 2021 13:00 | January 23, 2021 22:15 | 9h 15m | 2,115 | 1,613 |
| 7 | September 8, 2021 13:15 | September 8, 2021 20:45 | 7h 30m | 1,643 | 4,737 |
| 8 | August 25, 2021 06:45 | August 25, 2021 10:30 | 3h 45m | 1,606 | 6,022 |
| 9 | December 21, 2021 13:45 | December 21, 2021 17:30 | 3h 45m | 1,507 | 4,526 |
| 10 | September 9, 2021 12:45 | September 9, 2021 23:15 | 10h 30m | 1,493 | 1,884 |
Outage episodes by size in 2021: 60 reached 100+ customers, 13 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 Loudon 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 |
|---|---|---|---|---|---|
| Fort Loudoun Electric Coop | 2021 | 4.5 hrs | 2.56 | 4.5 hrs | 2.56 |
| City of Lenoir - (TN) | 2021 | 2.6 hrs | 1.57 | 2.6 hrs | 1.57 |
| Loudon Utilities Board | - | - | - | - | - |
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 ÷ 27,681 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. Loudon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Loudon 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/loudon-county