County annual report · FIPS 47063
2018 Hamblen County, TN Power Outage Report
In 2018, customers in Hamblen County, TN went without power for an average of 0.4 hours, a total of 16K customer-hours (Tennessee average 2.1 hours). That ranks 40th worst of 71 Tennessee counties and 2547th of 2,798 nationally.
Compared with TN, the US and 2017
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Hamblen County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 10, 2018 08:30 | July 10, 2018 10:00 | 1h 30m | 530 | 742 |
| 2 | July 21, 2018 02:15 | July 22, 2018 00:30 | 22h 15m | 469 | 1,752 |
| 3 | June 24, 2018 22:45 | June 25, 2018 10:30 | 11h 45m | 464 | 1,575 |
| 4 | August 11, 2018 11:15 | August 11, 2018 12:15 | 1h | 372 | 100 |
| 5 | December 9, 2018 15:45 | December 9, 2018 18:30 | 2h 45m | 281 | 279 |
| 6 | December 9, 2018 12:00 | December 9, 2018 15:00 | 3h | 215 | 340 |
| 7 | March 20, 2018 14:00 | March 20, 2018 16:30 | 2h 30m | 213 | 57 |
| 8 | December 9, 2018 19:30 | December 9, 2018 23:45 | 4h 15m | 182 | 294 |
| 9 | July 6, 2018 20:45 | July 7, 2018 01:15 | 4h 30m | 172 | 578 |
| 10 | April 16, 2018 00:00 | April 16, 2018 14:15 | 14h 15m | 170 | 2,394 |
Outage episodes by size in 2018: 20 reached 100+ customers, 0 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 2018, 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 | 2018 | 4.9 hrs | 3.34 | 4.9 hrs | 3.34 |
| Holston Electric Coop, Inc | 2018 | 6.0 hrs | 2.49 | 2.2 hrs | 1.83 |
| City of Morristown - (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 55% of Tennessee's customers in 2018; 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, 2018, 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/2018/tennessee/hamblen-county