County annual report · FIPS 47065
2022 Hamilton County, TN Power Outage Report
In 2022, customers in Hamilton County, TN went without power for an average of 0.5 hours, a total of 88K customer-hours (Tennessee average 9.2 hours). That ranks 72nd worst of 84 Tennessee counties and 2848th of 2,976 nationally.
Compared with TN, the US and 2021
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Hamilton County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 6, 2022 23:30 | March 7, 2022 01:30 | 2h | 6,723 | 1,683 |
| 2 | March 16, 2022 06:30 | March 16, 2022 07:15 | 45m | 6,722 | 5,042 |
| 3 | April 13, 2022 06:30 | April 13, 2022 06:45 | 15m | 6,720 | 1,680 |
| 4 | March 30, 2022 06:15 | March 30, 2022 06:30 | 15m | 3,900 | 975 |
| 5 | December 7, 2022 21:45 | December 7, 2022 23:30 | 1h 45m | 3,890 | 3,892 |
| 6 | December 24, 2022 01:00 | December 24, 2022 20:15 | 19h 15m | 2,519 | 5,094 |
| 7 | January 3, 2022 05:45 | January 3, 2022 21:00 | 15h 15m | 2,280 | 22K |
| 8 | January 1, 2022 18:00 | January 2, 2022 06:45 | 12h 45m | 1,583 | 2,197 |
| 9 | April 27, 2022 18:15 | April 27, 2022 20:15 | 2h | 1,575 | 1,576 |
| 10 | July 29, 2022 09:00 | July 29, 2022 14:00 | 5h | 1,539 | 2,712 |
Outage episodes by size in 2022: 48 reached 100+ customers, 16 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 2022, 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 | 2022 | 8.7 hrs | 4.56 | 6.7 hrs | 4.09 |
| City of Chattanooga - (TN) | 2021 | 73 min | 0.60 | 59 min | 0.53 |
| Sequachee Valley Electric Coop | 2022 | 5.2 hrs | 3.48 | 4.3 hrs | 3.19 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 75% of Tennessee's customers in 2022; 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, 2022, 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/2022/tennessee/hamilton-county