Power Outages in Sumner County, TN
As of October 15, 2026 00:30 UTC, about 5 customers are without power in Sumner County, TN across 1 reported incident. City of Gallatin - (TN), Nashville Electric Service and Tri-County Elec Member Corp (TN) publish only a system-wide total, not county figures. In 2025, the average customer here lost power for about 3.2 hours.
Sumner County, TN is served by 4 tracked utilities.
Cite this data
- URL
- https://massoutage.com/tennessee/sumner-county
- As of
- October 15, 2026 00:30 UTC
- Publisher
- MassOutage
MassOutage, "Power Outages in Sumner County, TN", live data as of October 15, 2026 00:30 UTC. https://massoutage.com/tennessee/sumner-county
0.0%of this county's ~97,375 customers are served by utilities with a county-level live feed.
Only visible while reporting outages: Cumberland Elec Member Corp. Zero here is not a confirmed all-clear.
System-wide total only, no county split: City of Gallatin - (TN), Nashville Electric Service, Tri-County Elec Member Corp (TN).
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| City of Gallatin - (TN) | Live · total only | not by county | - | - | - | - | - | - |
| Cumberland Elec Member Corp | Outages only | none reported | - | - | - | - | - | - |
| Nashville Electric Service | Live · total only | not by county | - | - | - | - | - | - |
| Tri-County Elec Member Corp (TN) | Live · total only | not by county | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Sumner Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.
By ZIP code (7)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 37066 | 659 | 25 | 508 | ≤11 |
| 37075 | 555 | 19 | 417 | ≤11 |
| 37148 | 308 | ≤11 | 238 | ≤11 |
| 37186 | 189 | 12 | 167 | ≤11 |
| 37022 | 83 | ≤11 | 68 | ≤11 |
| 37048 | 73 | ≤11 | 58 | 0 |
| 37031 | 64 | ≤11 | 51 | 0 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Sumner County or any town and utility in it.
No active NWS alerts for Sumner County right now.
Sumner County has been under 12 National Weather Service alerts recently, most recently a Special Weather Statement on October 15, 2026.
- Heat Advisory ×6
- Dense Fog Advisory ×2
- Special Weather Statement ×2
- Wind Advisory ×2
Hardest-hit cities in Sumner County
Where this event is concentrated across the county's towns and townships.
Live outage counts are tracked at the county level; a city-by-city split within Sumner Countyisn't available yet.
Historical reliability
In 2025, the average customer in Sumner County went about 3.2 hours without power. Peak simultaneous outage on record reached 35,732 customers.
The US EIA reports Tennessee utilities averaged 3.8 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 3.2 hrs.
Worst year here was 2023 (peak 35,732 customers out) · decade average 3.9 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 1,005 | 7,572 | 2.6 |
| 2016 | 947 | 8,034 | 2.3 |
| 2017 | 983 | 6,646 | 1.5 |
| 2018 | 1,044 | 4,974 | 1.2 |
| 2019 | 1,107 | 8,941 | 2.5 |
| 2020 | 1,059 | 8,262 | 2.5 |
| 2021 | 917 | 9,785 | 3.6 |
| 2022 | 1,075 | 13,014 | 2.9 |
| 2023 | 863 | 35,732 | 17.7 |
| 2024 | 930 | 17,222 | 2.9 |
| 2025 | 986 | 9,303 | 3.2 |
Cost of power in Sumner County
ENERGY & AI DEMAND →Estimated residential electricity price for Sumner County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.
- Nashville Electric Service14.0¢424,808 cust
- Cumberland Elec Member Corp13.8¢101,734 cust
- Tri-County Elec Member Corp (TN)12.9¢25,085 cust
- City of Gallatin - (TN)12.8¢23,744 cust
Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.
Relatively High ice storms exposure · 3.9 hrs/yr of outages over the last decade.
Power outages in Sumner County: FAQ
- How often does Sumner County, TN lose power?
- Based on EAGLE-I records, Sumner County, TN logged 986 distinct outage events in 2025, averaging about 3.2 hours without power per customer over the year.
- What was the worst power outage in Sumner County, TN?
- The largest tracked outage peaked at 35,732 customers without power, beginning December 9, 2023 and lasting about 11d 23h.
- Is there a power outage in Sumner County, TN right now?
- Yes, about 5 customers are currently without power across 1 reported incident(s).
- Which utilities serve Sumner County, TN?
- Tracked electric providers include City of Gallatin - (TN), Cumberland Elec Member Corp, Nashville Electric Service, Tri-County Elec Member Corp (TN).
Hendersonville, Gallatin. Outage counts for these communities are reported at the Sumner County level shown above.
Outages are tracked at the county level; these ZIP codes fall within Sumner County.
37022, 37031, 37048, 37066, 37075, 37148, 37186
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Tri-County Elec Member Corp (TN) | 8.8 hrs | Live · total only | - |
| Nashville Electric Service | 0.0 hrs | Live · total only | - |
| City of Gallatin - (TN) | 0.8 hrs | Live · total only | - |
| Cumberland Elec Member Corp | - | Outages only | - |
Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Tennessee customers). Machine-readable data: /api/v1/counties/47165 and /api/v1/counties/47165/history. Live data as of .