County annual report · FIPS 47163
2020 Sullivan County, TN Power Outage Report
In 2020, customers in Sullivan County, TN went without power for an average of 3.7 hours, a total of 256K customer-hours (Tennessee average 6.5 hours). That ranks 39th worst of 84 Tennessee counties and 1694th of 3,019 nationally.
Compared with TN, the US and 2019
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sullivan County, 2020
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 11, 2020 14:30 | January 15, 2020 01:15 | 3d 10h | 5,459 | 58K |
| 2 | November 24, 2020 15:15 | November 24, 2020 19:00 | 3h 45m | 3,691 | 3,945 |
| 3 | April 29, 2020 21:15 | April 30, 2020 23:15 | 1d 2h | 3,286 | 10K |
| 4 | May 21, 2020 14:00 | May 23, 2020 02:30 | 1d 12h | 2,163 | 7,744 |
| 5 | April 9, 2020 07:00 | April 10, 2020 02:00 | 19h | 1,819 | 3,581 |
| 6 | July 20, 2020 11:00 | July 20, 2020 17:00 | 6h | 1,627 | 1,472 |
| 7 | April 12, 2020 22:00 | April 17, 2020 17:00 | 4d 19h | 1,568 | 15K |
| 8 | May 29, 2020 05:15 | May 29, 2020 06:00 | 45m | 1,205 | 904 |
| 9 | September 16, 2020 05:00 | September 17, 2020 09:15 | 1d 4h | 1,108 | 4,088 |
| 10 | August 4, 2020 04:30 | August 4, 2020 23:45 | 19h 15m | 1,071 | 2,419 |
Outage episodes by size in 2020: 87 reached 100+ customers, 12 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 Sullivan County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Appalachian Power Co | 2020 | 10.1 hrs | 2.26 | 7.7 hrs | 2.01 |
| Johnson City - (TN) | 2020 | 30 min | 0.34 | 28 min | 0.33 |
| Kingsport Power Co | 2020 | 6.4 hrs | 1.67 | 4.5 hrs | 1.51 |
| City of Bristol - (TN) | 2020 | 1.5 hrs | 1.65 | 70 min | 1.01 |
| City of Elizabethton - (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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 69,352 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. Sullivan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sullivan County, TN annual power outage report, 2020, 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/2020/tennessee/sullivan-county