County annual report · FIPS 47145
2021 Roane County, TN Power Outage Report
In 2021, customers in Roane County, TN went without power for an average of 2.6 hours, a total of 69K customer-hours (Tennessee average 3.7 hours). That ranks 45th worst of 84 Tennessee counties and 2013th 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 Roane 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 | January 26, 2021 14:30 | January 26, 2021 17:00 | 2h 30m | 4,002 | 2,792 |
| 2 | September 13, 2021 13:30 | September 13, 2021 19:30 | 6h | 2,633 | 10K |
| 3 | March 31, 2021 19:15 | April 1, 2021 21:00 | 1d 1h | 1,894 | 3,898 |
| 4 | September 1, 2021 03:15 | September 1, 2021 16:15 | 13h | 1,891 | 8,212 |
| 5 | December 11, 2021 12:45 | December 12, 2021 05:15 | 16h 30m | 1,693 | 6,908 |
| 6 | June 21, 2021 21:45 | June 22, 2021 12:00 | 14h 15m | 1,346 | 5,474 |
| 7 | July 2, 2021 23:30 | July 3, 2021 05:45 | 6h 15m | 960 | 5,995 |
| 8 | January 22, 2021 21:30 | January 22, 2021 23:30 | 2h | 905 | 407 |
| 9 | November 20, 2021 21:30 | November 20, 2021 23:00 | 1h 30m | 878 | 1,106 |
| 10 | August 30, 2021 23:15 | August 31, 2021 03:15 | 4h | 877 | 2,632 |
Outage episodes by size in 2021: 35 reached 100+ customers, 6 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 Roane 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 |
| City of Clinton - (TN) | 2021 | 2.1 hrs | 1.53 | 1.7 hrs | 1.32 |
| City of Lenoir - (TN) | 2021 | 2.6 hrs | 1.57 | 2.6 hrs | 1.57 |
| City of Harriman - (TN) | 2021 | 8.2 hrs | 5.58 | 8.2 hrs | 4.26 |
| City of Rockwood - (TN) | 2021 | 4.6 hrs | 2.59 | 2.9 hrs | 2.07 |
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 ÷ 27,008 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. Roane County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Roane 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/roane-county