County annual report · FIPS 47189
2025 Wilson County, TN Power Outage Report
In 2025, customers in Wilson County, TN went without power for an average of 1.4 hours, a total of 94K customer-hours (Tennessee average 4.3 hours). That ranks 58th worst of 81 Tennessee counties and 2647th of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Wilson County, 2025
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 5, 2025 22:00 | April 7, 2025 09:45 | 1d 11h | 4,316 | 14K |
| 2 | September 14, 2025 20:30 | September 14, 2025 21:00 | 30m | 4,198 | 1,050 |
| 3 | August 22, 2025 22:00 | August 23, 2025 01:45 | 3h 45m | 3,814 | 957 |
| 4 | December 31, 2025 20:15 | December 31, 2025 22:30 | 2h 15m | 3,791 | 3,792 |
| 5 | June 6, 2025 05:00 | June 7, 2025 09:15 | 1d 4h | 3,319 | 4,373 |
| 6 | July 28, 2025 13:45 | July 28, 2025 18:45 | 5h | 3,305 | 2,567 |
| 7 | November 18, 2025 12:30 | November 18, 2025 22:15 | 9h 45m | 3,267 | 1,509 |
| 8 | April 23, 2025 14:15 | April 23, 2025 22:00 | 7h 45m | 2,620 | 677 |
| 9 | July 13, 2025 03:45 | July 13, 2025 08:00 | 4h 15m | 2,394 | 1,755 |
| 10 | September 6, 2025 13:30 | September 6, 2025 22:30 | 9h | 2,392 | 4,064 |
Outage episodes by size in 2025: 81 reached 100+ customers, 32 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 Wilson County reported on EIA Form 861 for 2025, 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 | 2024 | 49 min | 0.93 | 42 min | 0.88 |
| Nashville Electric Service | 2024 | 0 min | 0.00 | 87 min | 1.01 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Tennessee's customers in 2025; 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, 2025, 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/2025/tennessee/wilson-county