County annual report · FIPS 47149
2021 Rutherford County, TN Power Outage Report
In 2021, customers in Rutherford County, TN went without power for an average of 1.0 hours, a total of 164K customer-hours (Tennessee average 3.7 hours). That ranks 64th worst of 84 Tennessee counties and 2647th of 2,974 nationally.
Compared with TN, the US and 2020
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Rutherford County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 21, 2021 14:30 | January 22, 2021 03:45 | 13h 15m | 11,589 | 9,842 |
| 2 | September 3, 2021 15:45 | September 4, 2021 01:30 | 9h 45m | 10,144 | 28K |
| 3 | February 28, 2021 12:30 | February 28, 2021 18:45 | 6h 15m | 8,881 | 8,938 |
| 4 | February 17, 2021 04:30 | February 17, 2021 10:00 | 5h 30m | 6,116 | 4,068 |
| 5 | July 4, 2021 03:45 | July 4, 2021 06:15 | 2h 30m | 5,258 | 1,317 |
| 6 | August 2, 2021 11:30 | August 3, 2021 06:00 | 18h 30m | 4,514 | 2,354 |
| 7 | May 17, 2021 19:15 | May 17, 2021 23:45 | 4h 30m | 3,428 | 2,412 |
| 8 | August 10, 2021 12:00 | August 10, 2021 20:00 | 8h | 3,029 | 887 |
| 9 | August 29, 2021 20:45 | August 30, 2021 05:00 | 8h 15m | 2,520 | 4,353 |
| 10 | July 14, 2021 10:45 | July 14, 2021 21:30 | 10h 45m | 2,475 | 681 |
Outage episodes by size in 2021: 108 reached 100+ customers, 35 reached 1,000+ customers, 2 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 Rutherford County reported on EIA Form 861 for 2021, 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 | 2021 | 7.7 hrs | 2.06 | 2.2 hrs | 1.59 |
| Middle Tennessee E M C | 2021 | 65 min | 1.00 | 55 min | 0.96 |
| Nashville Electric Service | 2021 | 12.8 hrs | 1.82 | 1.7 hrs | 1.27 |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 157,588 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. Rutherford County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Rutherford County, TN annual power outage report, 2021, 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/2021/tennessee/rutherford-county