County annual report · FIPS 47065
2024 Hamilton County, TN Power Outage Report
In 2024, customers in Hamilton County, TN went without power for an average of 5.4 hours, a total of 1.0M customer-hours (Tennessee average 4.8 hours). That ranks 29th worst of 84 Tennessee counties and 1531st of 2,990 nationally.
Compared with TN, the US and 2023
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Hamilton County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 21, 2024 11:15 | May 22, 2024 02:45 | 15h 30m | 62,351 | 31K |
| 2 | July 7, 2024 08:30 | July 8, 2024 21:15 | 1d 12h | 37,858 | 23K |
| 3 | May 8, 2024 14:00 | May 13, 2024 07:30 | 4d 17h | 22,237 | 343K |
| 4 | July 29, 2024 12:00 | August 2, 2024 04:30 | 3d 16h | 15,147 | 127K |
| 5 | March 27, 2024 06:30 | March 27, 2024 21:45 | 15h 15m | 9,965 | 2,717 |
| 6 | March 18, 2024 12:30 | March 19, 2024 04:00 | 15h 30m | 6,046 | 2,047 |
| 7 | September 10, 2024 11:45 | September 11, 2024 03:00 | 15h 15m | 5,399 | 1,962 |
| 8 | January 12, 2024 12:00 | January 14, 2024 02:30 | 1d 14h | 5,393 | 41K |
| 9 | September 9, 2024 12:45 | September 9, 2024 18:00 | 5h 15m | 4,584 | 1,198 |
| 10 | July 21, 2024 08:15 | July 23, 2024 14:30 | 2d 6h | 4,354 | 22K |
Outage episodes by size in 2024: 201 reached 100+ customers, 59 reached 1,000+ customers, 4 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 2024, 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 | 2024 | 11.4 hrs | 5.80 | 7.3 hrs | 5.02 |
| City of Chattanooga - (TN) | 2021 | 73 min | 0.60 | 59 min | 0.53 |
| Sequachee Valley Electric Coop | 2024 | 5.0 hrs | 3.09 | 4.2 hrs | 2.69 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Tennessee's customers in 2024; 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, 2024, 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/2024/tennessee/hamilton-county