County annual report · FIPS 47065
2019 Hamilton County, TN Power Outage Report
In 2019, customers in Hamilton County, TN went without power for an average of 0.2 hours, a total of 39K customer-hours (Tennessee average 2.7 hours). That ranks 72nd worst of 86 Tennessee counties and 2776th of 2,945 nationally.
Compared with TN, the US and 2018
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Hamilton County, 2019
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 30, 2019 12:00 | July 30, 2019 14:45 | 2h 45m | 2,958 | 914 |
| 2 | July 18, 2019 04:15 | July 18, 2019 05:45 | 1h 30m | 2,083 | 1,828 |
| 3 | December 30, 2019 01:30 | December 30, 2019 18:30 | 17h | 811 | 1,452 |
| 4 | August 21, 2019 03:15 | August 21, 2019 04:45 | 1h 30m | 723 | 210 |
| 5 | June 24, 2019 17:30 | June 26, 2019 00:45 | 1d 7h | 707 | 5,725 |
| 6 | August 20, 2019 00:30 | August 20, 2019 02:00 | 1h 30m | 674 | 285 |
| 7 | June 17, 2019 22:30 | June 17, 2019 23:45 | 1h 15m | 651 | 808 |
| 8 | July 22, 2019 19:00 | July 23, 2019 07:00 | 12h | 650 | 1,281 |
| 9 | April 22, 2019 12:00 | April 22, 2019 12:15 | 15m | 596 | 149 |
| 10 | June 17, 2019 15:30 | June 17, 2019 15:45 | 15m | 544 | 136 |
Outage episodes by size in 2019: 60 reached 100+ customers, 2 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 Hamilton County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| City of Chattanooga - (TN) | 2018 | 2.4 hrs | 1.00 | 77 min | 0.66 |
| Sequachee Valley Electric Coop | 2018 | 7.0 hrs | 3.05 | 3.0 hrs | 2.51 |
| Volunteer Electric Coop | - | - | - | - | - |
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 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 187,870 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. Hamilton County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Hamilton County, TN annual power outage report, 2019, 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/2019/tennessee/hamilton-county