Sumner County, TN Power Outages
Only some utilities serving Sumner County, Tennessee share live outage data (Cumberland Elec Member Corp), and none of them report outages here right now. Nashville Electric Service and Tri-County Elec Member Corp (TN) do not share live data, so check their outage maps for real-time status.
Sumner 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.
Sumner County power outage history
Every significant outage recorded in Sumner County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 327 significant power outages in Sumner County, meaning events that left at least 1% of customers in the dark. The largest (Dec 9–13, 2023) came when tornadoes left 35,732 customers (42% of the county) without power.
From 2018 to 2025, the average customer here lost about 4 hr 34 min of power per year, close to the Tennessee average of 5 hr 20 min. That ranks 36th of 88 Tennessee counties for outage time, where 1st has the most.
December is the riskiest month: it accounted for 36% of all customer outage time from 2018 to 2025. On 44 days in that period, at least 5% of customers were out at the same time. Outage time in Sumner County has risen recently: about 6 hr 41 min per customer per year in 2022–2025, versus 2 hr 26 min in 2018–2021.
The most recent significant outage on record (Dec 29, 2025) affected 1,519 customers (1.8%) amid severe thunderstorms.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Dec 9–13, 2023 | 35,732(42%) | 5 | Tornadoes |
| 2 | Mar 3–10, 2023 | 24,019(28.2%) | 8 | Severe thunderstorms |
| 3 | Jan 9–10, 2024 | 17,222(20.2%) | 2 | High winds |
| 4 | Dec 23–24, 2022 | 13,014(15.3%) | 2 | Winter Storm Elliott |
| 5 | Dec 11–12, 2021 | 9,785(11.5%) | 2 | Tornadoes |
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 Sumner County?
Electric companies with service territory in Sumner County (EIA-861, 2025)
| Utility | Type | Customers (TN) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Nashville Electric Service (NES) | Municipal | 470,927 | Not reporting | |
| Cumberland Electric (CEMC) | Cooperative | 113,734 | Reporting | |
| Tri-County Elec Member Corp (TN) | Cooperative | 30,837 | Not reporting | |
| City of Gallatin - (TN) | Municipal | 27,525 | 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 Sumner County outage headlines in the past week.
Cities in Sumner County
Hendersonville, Gallatin, White House
Nearby counties
Sumner County power outage FAQ
Is the power out in Sumner County right now?
No outages are currently reported for Sumner 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 Sumner County?
According to EIA-861 service territory data, Nashville Electric Service, Cumberland Elec Member Corp, Tri-County Elec Member Corp (TN), City of Gallatin - (TN) provide electric service in Sumner County, Tennessee.
What was the worst power outage in Sumner County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Dec 9–13, 2023. It peaked at 35,732 customers without power (42% of the county). NOAA storm reports for that period point to tornadoes.
How often does the power go out in Sumner County?
EAGLE-I has recorded 327 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 4 hr 34 min of power per year, and on 44 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. "Sumner County, TN Power Outages." Accessed November 2, 2026. https://poweroutagetracker.com/outages/tennessee/sumner-county