County annual report · FIPS 47189
2020 Wilson County, TN Power Outage Report
In 2020, customers in Wilson County, TN went without power for an average of 11.6 hours, a total of 783K customer-hours (Tennessee average 6.5 hours). That ranks 7th worst of 84 Tennessee counties and 682nd of 3,019 nationally.
Compared with TN, the US and 2019
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Wilson County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 3, 2020 07:00 | March 11, 2020 21:30 | 8d 14h | 35,831 | 479K |
| 2 | May 3, 2020 22:00 | May 9, 2020 10:15 | 5d 12h | 23,545 | 204K |
| 3 | January 27, 2020 14:45 | January 27, 2020 19:00 | 4h 15m | 6,033 | 5,102 |
| 4 | August 28, 2020 18:00 | August 28, 2020 23:15 | 5h 15m | 4,256 | 1,080 |
| 5 | July 12, 2020 12:00 | July 12, 2020 15:15 | 3h 15m | 3,303 | 10K |
| 6 | September 9, 2020 18:00 | September 9, 2020 18:15 | 15m | 2,652 | 663 |
| 7 | November 7, 2020 17:45 | November 7, 2020 18:15 | 30m | 2,635 | 659 |
| 8 | October 16, 2020 21:15 | October 16, 2020 21:30 | 15m | 2,625 | 656 |
| 9 | April 8, 2020 13:00 | April 8, 2020 18:15 | 5h 15m | 2,525 | 647 |
| 10 | September 21, 2020 11:45 | September 21, 2020 20:30 | 8h 45m | 2,364 | 1,973 |
Outage episodes by size in 2020: 75 reached 100+ customers, 28 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 Wilson County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Middle Tennessee E M C | 2020 | 4.0 hrs | 1.58 | 58 min | 1.05 |
| Nashville Electric Service | 2020 | 30.9 hrs | 2.52 | 1.7 hrs | 1.44 |
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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 67,214 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. Wilson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Wilson County, TN annual power outage report, 2020, 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/2020/tennessee/wilson-county