County annual report · FIPS 47143
2021 Rhea County, TN Power Outage Report
In 2021, customers in Rhea County, TN went without power for an average of 3.5 hours, a total of 60K customer-hours (Tennessee average 3.7 hours). That ranks 37th worst of 84 Tennessee counties and 1679th 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 Rhea 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 | June 12, 2021 23:30 | June 13, 2021 16:00 | 16h 30m | 4,426 | 14K |
| 2 | October 16, 2021 06:45 | October 16, 2021 08:00 | 1h 15m | 2,767 | 1,046 |
| 3 | September 26, 2021 13:30 | September 26, 2021 17:30 | 4h | 1,386 | 1,068 |
| 4 | February 28, 2021 15:45 | February 28, 2021 19:45 | 4h | 1,382 | 4,292 |
| 5 | September 7, 2021 14:45 | September 7, 2021 16:30 | 1h 45m | 1,380 | 346 |
| 6 | March 10, 2021 16:45 | March 10, 2021 17:45 | 1h | 1,377 | 345 |
| 7 | August 31, 2021 19:45 | September 1, 2021 08:00 | 12h 15m | 1,374 | 8,404 |
| 8 | May 5, 2021 22:30 | May 6, 2021 00:45 | 2h 15m | 1,371 | 1,030 |
| 9 | March 18, 2021 12:15 | March 18, 2021 12:30 | 15m | 1,368 | 342 |
| 10 | October 16, 2021 12:15 | October 16, 2021 18:15 | 6h | 1,121 | 2,358 |
Outage episodes by size in 2021: 35 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 Rhea 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 Chattanooga - (TN) | 2021 | 73 min | 0.60 | 59 min | 0.53 |
| Sequachee Valley Electric Coop | 2021 | 5.8 hrs | 3.71 | 4.5 hrs | 3.34 |
| City of Dayton - (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 ÷ 17,177 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. Rhea County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Rhea 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/rhea-county