Williamson County, TN Power Outages
Only some utilities serving Williamson County, Tennessee share live outage data (Middle Tennessee E M C), and none of them report outages here right now. Nashville Electric Service and Duck River Elec Member Corp do not share live data, so check their outage maps for real-time status.
Williamson County on the Tennessee outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Williamson County power outage history
Every significant outage recorded in Williamson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 200 significant power outages in Williamson County, meaning events that left at least 1% of customers in the dark. The largest (May 3–5, 2020) came when severe thunderstorms left 12,540 customers (10.1% of the county) without power.
From 2018 to 2025, the average customer here lost about 1 hr 24 min of power per year, less than the Tennessee average of 5 hr 20 min. That ranks 66th of 88 Tennessee counties for outage time, where 1st has the most.
May is the riskiest month: it accounted for 21% of all customer outage time from 2018 to 2025. On 13 days in that period, at least 5% of customers were out at the same time. Outage time in Williamson County has held roughly steady recently: about 1 hr 29 min per customer per year in 2022–2025, versus 1 hr 20 min in 2018–2021.
The most recent significant outage on record (Dec 13, 2025) affected 1,488 customers (1.2%) amid extreme cold.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | May 3–5, 2020 | 12,540(10.1%) | 3 | Severe thunderstorms |
| 2 | Jul 1, 2023 | 11,340(9.2%) | 1 | Severe thunderstorms |
| 3 | Sep 6, 2025 | 10,700(8.7%) | 1 | Severe thunderstorms |
| 4 | Mar 30, 2022 | 10,189(8.2%) | 1 | Severe thunderstorms |
| 5 | Apr 14, 2022 | 10,062(8.1%) | 1 | Severe thunderstorms |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Williamson County?
Electric companies with service territory in Williamson County (EIA-861, 2025)
| Utility | Type | Customers (TN) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Nashville Electric Service (NES) | Municipal | 470,927 | Not reporting | |
| Middle Tennessee Electric (MTE) | Cooperative | 355,220 | Reporting | |
| Duck River Elec Member Corp | Cooperative | 86,690 | Not reporting | |
| Columbia Power System - (TN) | Municipal | 37,542 | Not reporting |
Customer counts are each utility's statewide total in Tennessee. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Williamson County outage headlines in the past week.
Cities in Williamson County
Franklin, Spring Hill, Brentwood, Nolensville
Nearby counties
Williamson County power outage FAQ
Is the power out in Williamson County right now?
No outages are currently reported for Williamson County by participating utilities. Live coverage is limited here, so If your power is out, report it to your electric company.
Which electric company serves Williamson County?
According to EIA-861 service territory data, Nashville Electric Service, Middle Tennessee E M C, Duck River Elec Member Corp, Columbia Power System - (TN) provide electric service in Williamson County, Tennessee.
What was the worst power outage in Williamson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was May 3–5, 2020. It peaked at 12,540 customers without power (10.1% of the county). NOAA storm reports for that period point to severe thunderstorms.
How often does the power go out in Williamson County?
EAGLE-I has recorded 200 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 1 hr 24 min of power per year, and on 13 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Williamson County, TN Power Outages." Accessed November 2, 2026. https://poweroutagetracker.com/outages/tennessee/williamson-county