County annual report · FIPS 47115
2018 Marion County, TN Power Outage Report
In 2018, customers in Marion County, TN went without power for an average of 0.0 hours, a total of 604 customer-hours (Tennessee average 2.1 hours). That ranks 57th worst of 71 Tennessee counties and 2708th 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 Marion 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 | August 18, 2018 08:15 | August 18, 2018 11:00 | 2h 45m | 146 | 402 |
| 2 | June 25, 2018 21:15 | June 25, 2018 22:30 | 1h 15m | 34 | 43 |
| 3 | April 4, 2018 05:00 | April 4, 2018 15:15 | 10h 15m | 25 | 95 |
| 4 | May 19, 2018 15:30 | May 19, 2018 16:45 | 1h 15m | 25 | 31 |
| 5 | July 21, 2018 03:00 | July 21, 2018 06:15 | 3h 15m | 10 | 30 |
| 6 | June 28, 2018 00:00 | June 28, 2018 00:15 | 15m | 1 | 0 |
| 7 | July 9, 2018 13:15 | July 9, 2018 14:15 | 1h | 1 | 1 |
| 8 | September 10, 2018 20:45 | September 10, 2018 22:15 | 1h 30m | 1 | 2 |
| 9 | November 6, 2018 07:45 | November 6, 2018 08:00 | 15m | 1 | 0 |
| 10 | November 6, 2018 13:15 | November 6, 2018 13:45 | 30m | 1 | 1 |
Outage episodes by size in 2018: 1 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 Marion 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 |
|---|---|---|---|---|---|
| Duck River Elec Member Corp | 2018 | 2.9 hrs | 1.62 | 1.5 hrs | 1.29 |
| 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 |
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 ÷ 15,729 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. Marion County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Marion 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/marion-county