County annual report · FIPS 47061
2021 Grundy County, TN Power Outage Report
In 2021, customers in Grundy County, TN went without power for an average of 7.3 hours, a total of 53K customer-hours (Tennessee average 3.7 hours). That ranks 15th worst of 84 Tennessee counties and 998th 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 Grundy 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 | April 1, 2021 12:45 | April 1, 2021 14:00 | 1h 15m | 3,458 | 3,784 |
| 2 | August 7, 2021 16:00 | August 7, 2021 19:45 | 3h 45m | 1,592 | 3,991 |
| 3 | January 16, 2021 20:00 | January 17, 2021 13:15 | 17h 15m | 1,549 | 25K |
| 4 | August 31, 2021 09:15 | August 31, 2021 15:45 | 6h 30m | 1,234 | 805 |
| 5 | April 25, 2021 04:45 | April 25, 2021 05:45 | 1h | 1,217 | 330 |
| 6 | February 13, 2021 19:45 | February 16, 2021 02:45 | 2d 7h | 862 | 5,908 |
| 7 | April 8, 2021 19:00 | April 8, 2021 19:30 | 30m | 831 | 344 |
| 8 | December 11, 2021 09:00 | December 12, 2021 03:15 | 18h 15m | 659 | 1,153 |
| 9 | March 20, 2021 21:45 | March 21, 2021 15:30 | 17h 45m | 573 | 972 |
| 10 | July 11, 2021 22:15 | July 12, 2021 05:15 | 7h | 572 | 992 |
Outage episodes by size in 2021: 18 reached 100+ customers, 5 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 Grundy 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 |
| Sequachee Valley Electric Coop | 2021 | 5.8 hrs | 3.71 | 4.5 hrs | 3.34 |
| Caney Fork Electric Coop, Inc | - | - | - | - | - |
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 ÷ 7,160 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. Grundy County has data for 2015, 2018–2025.
Cite this report
MassOutage (massoutage.com), Grundy 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/grundy-county