County annual report · FIPS 47147
2021 Robertson County, TN Power Outage Report
In 2021, customers in Robertson County, TN went without power for an average of 2.8 hours, a total of 89K customer-hours (Tennessee average 3.7 hours). That ranks 44th worst of 84 Tennessee counties and 1926th 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 Robertson 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 | December 11, 2021 06:30 | December 14, 2021 09:00 | 3d 2h | 7,653 | 6,674 |
| 2 | March 27, 2021 11:15 | March 28, 2021 21:15 | 1d 10h | 3,820 | 3,023 |
| 3 | August 1, 2021 00:15 | August 1, 2021 15:00 | 14h 45m | 3,131 | 6,443 |
| 4 | May 4, 2021 10:45 | May 6, 2021 13:15 | 2d 2h | 1,910 | 6,817 |
| 5 | November 25, 2021 13:00 | November 25, 2021 16:45 | 3h 45m | 1,676 | 2,526 |
| 6 | November 27, 2021 17:15 | November 28, 2021 14:45 | 21h 30m | 1,673 | 2,352 |
| 7 | November 19, 2021 14:30 | November 19, 2021 23:30 | 9h | 1,541 | 2,791 |
| 8 | October 13, 2021 12:00 | October 14, 2021 00:45 | 12h 45m | 1,527 | 2,434 |
| 9 | May 13, 2021 13:30 | May 13, 2021 16:45 | 3h 15m | 1,461 | 1,468 |
| 10 | August 28, 2021 21:00 | August 29, 2021 05:00 | 8h | 1,384 | 3,459 |
Outage episodes by size in 2021: 71 reached 100+ customers, 13 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 Robertson 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 |
|---|---|---|---|---|---|
| Nashville Electric Service | 2021 | 12.8 hrs | 1.82 | 1.7 hrs | 1.27 |
| Cumberland Elec Member Corp | - | - | - | - | - |
| City of Springfield - (TN) | - | - | - | - | - |
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 ÷ 31,945 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. Robertson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Robertson 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/robertson-county