County annual report · FIPS 47063
2020 Hamblen County, TN Power Outage Report
In 2020, customers in Hamblen County, TN went without power for an average of 1.7 hours, a total of 66K customer-hours (Tennessee average 6.5 hours). That ranks 57th worst of 84 Tennessee counties and 2374th 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 Hamblen 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 | June 24, 2020 23:30 | June 25, 2020 20:30 | 21h | 2,938 | 1,694 |
| 2 | May 31, 2020 23:30 | June 1, 2020 01:15 | 1h 45m | 2,880 | 1,442 |
| 3 | July 2, 2020 12:00 | July 2, 2020 13:00 | 1h | 2,861 | 2,860 |
| 4 | October 10, 2020 13:30 | October 13, 2020 21:15 | 3d 7h | 2,312 | 2,763 |
| 5 | January 30, 2020 13:30 | February 3, 2020 21:45 | 4d 8h | 2,298 | 1,321 |
| 6 | June 27, 2020 13:30 | June 27, 2020 16:15 | 2h 45m | 1,787 | 451 |
| 7 | March 29, 2020 10:30 | April 1, 2020 13:30 | 3d 3h | 1,718 | 3,579 |
| 8 | April 8, 2020 21:15 | April 9, 2020 01:15 | 4h | 1,240 | 1,541 |
| 9 | November 11, 2020 12:30 | November 14, 2020 03:30 | 2d 15h | 1,088 | 1,960 |
| 10 | December 24, 2020 08:30 | December 25, 2020 19:30 | 1d 11h | 586 | 6,940 |
Outage episodes by size in 2020: 43 reached 100+ customers, 9 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 Hamblen 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 Electric Coop | 2020 | 4.9 hrs | 3.13 | 3.8 hrs | 2.84 |
| Holston Electric Coop, Inc | 2020 | 3.3 hrs | 2.50 | 2.6 hrs | 2.13 |
| City of Morristown - (TN) | 2020 | 3.1 hrs | 2.27 | 43 min | 0.54 |
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 ÷ 38,657 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. Hamblen County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Hamblen 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/hamblen-county