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Power Outages in Williamson County, TN

City of Dickson, Columbia Power System - (TN), Duck River Elec Member Corp, Middle Tennessee E M C and Nashville Electric Service publish only a system-wide total, not county figures. In 2025, the average customer here lost power for about 1.1 hours.

Williamson County, TN is served by 5 tracked utilities.

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https://massoutage.com/tennessee/williamson-county
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Not available
Publisher
MassOutage

MassOutage, "Power Outages in Williamson County, TN". https://massoutage.com/tennessee/williamson-county

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Williamson County, TN
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No outages reported (partial view)

City of Dickson, Columbia Power System - (TN), Duck River Elec Member Corp, Middle Tennessee E M C and Nashville Electric Service publish no county-level figures.

Live status by utility · Williamson County

0.0%of this county's ~125,334 customers are served by utilities with a county-level live feed.

Blind spots

System-wide total only, no county split: City of Dickson, Columbia Power System - (TN), Duck River Elec Member Corp, Middle Tennessee E M C, Nashville Electric Service.

UtilityFeedOutServed% outSmall outagesIncidentsUtility ETRAs of
City of DicksonLive · total onlynot by county------
Columbia Power System - (TN)Live · total onlynot by county------
Duck River Elec Member CorpLive · total onlynot by county------
Middle Tennessee E M CLive · total onlynot by county------
Nashville Electric ServiceLive · total onlynot by county------

Electricity-dependent residents

HHS emPOWER · data October 7, 2026

Medicare beneficiaries in Williamson 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.

Power-dependent
1,260
Oxygen service
176
Dialysis (facility)
109
Home health / hospice
279
By ZIP code (9)
ZIPPower-dependentVentilatorsO2 concentratorsHome dialysis
37064322≤11207≤11
37027282≤11167≤11
37067126≤1175≤11
37062114≤1184≤11
3713579≤1157≤11
3706973≤1150≤11
3717966≤11400
3704639021≤11
3701420≤1112≤11

Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.

🔔 Alerts for Williamson County, TN

Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Williamson County or any town and utility in it.

Get alerts for Williamson CountySend updates to your dashboardRSS feed
◢ ACTIVE WEATHER ALERTS · NWS

No active NWS alerts for Williamson County right now.

Recent NWS alert activity · Williamson County

Williamson County has been under 10 National Weather Service alerts recently, most recently a Dense Fog Advisory on October 12, 2026.

  • Heat Advisory ×6
  • Wind Advisory ×2
  • Dense Fog Advisory ×1
  • Flood Watch ×1

Latest Williamson County, TN outage updates

A running log of how this outage has changed, updated automatically as utilities report in.

  1. RESOLVED

    Power restored after 9m

  2. OUTAGE BEGAN

    Outage began: 954 customers out (0.8% of the county)

  3. RESOLVED

    Power restored after 15m

  4. OUTAGE BEGAN

    Outage began: 907 customers out (0.7% of the county)

  5. RESOLVED

    Power restored after 14m

  6. OUTAGE BEGAN

    Outage began: 2,735 customers out (2.2% of the county)

  7. RESOLVED

    Power restored after 15m

  8. OUTAGE BEGAN

    Outage began: 950 customers out (0.8% of the county)

Outage trend · Williamson County, TN
0customers out · peak 10
Data as of Oct 15, 2026 00:30 UTC
Williamson County, TN: customers without power, last 24 hoursPeak 10 customers out; latest 0 as of Oct 15, 2026 00:30 UTC. Each point is the highest reading in its interval.02.557.510Oct 146 AM12 PM6 PM
Use the arrow keys to read values.
Times in EDT. Shaded stretches had no reading.

Hardest-hit cities in Williamson County

Where this event is concentrated across the county's towns and townships.

  • Franklinno outage reported
  • Spring Hillno outage reported
  • Brentwoodno outage reported

Historical reliability

In 2025, the average customer in Williamson County went about 1.1 hours without power. Peak simultaneous outage on record reached 12,540 customers.

Official state benchmark (EIA 2025)Source: US EIA

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 1.1 hrs.

A decade of outages (2015–2025)
avg hrs without power / customer
Williamson County average outage hours per customer by year2015–2025: 2015 0.5h, 2016 1.0h, 2017 0.6h, 2018 0.8h, 2019 1.3h, 2020 2.0h, 2021 1.1h, 2022 2.2h, 2023 1.6h, 2024 1.1h, 2025 1.1h. Highlighted: 2022.01230.5h20151.0h20160.6h20170.8h20181.3h20192.0h20201.1h20212.2h20221.6h20231.1h20241.1h2025
Use the arrow keys to read values.

Worst year here was 2022 (peak 10,189 customers out) · decade average 1.2 hrs without power per customer/yr.

YearOutage eventsPeak customers outAvg hrs/customer
20156335,4130.5
20168698,5451.0
20176747,5650.6
20189006,7610.8
20196947,7211.3
202088712,5402.0
20219425,3881.1
202290610,1892.2
202386411,3401.6
20249136,4971.1
202588210,7001.1

Cost of power in Williamson County

ENERGY & AI DEMAND →

Estimated residential electricity price for Williamson 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.

12.7¢/kWh
estimated residential average
▲ 27% since 2015
vs Tennessee avg 13.7¢
vs US avg 20.0¢
BY UTILITY · RESIDENTIAL ¢/kWh

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.

Worst recorded outages
STARTEDPEAK OUTDURATION
May 3, 202012,5405d 14h
July 1, 202311,3403d 22h
September 5, 202510,7001d
March 30, 202210,18922h
April 14, 202210,0622d
See the biggest power outages in US history →
Natural hazards & outage risk
ELEVATED

Relatively High ice storms exposure · 1.2 hrs/yr of outages over the last decade.

Ice stormRelatively High
Strong windRelatively High
TornadoRelatively Moderate
FloodingRelatively Moderate
All hazard rankings →

Power outages in Williamson County: FAQ

How often does Williamson County, TN lose power?
Based on EAGLE-I records, Williamson County, TN logged 882 distinct outage events in 2025, averaging about 1.1 hours without power per customer over the year.
What was the worst power outage in Williamson County, TN?
The largest tracked outage peaked at 12,540 customers without power, beginning May 3, 2020 and lasting about 5d 14h.
Is there a power outage in Williamson County, TN right now?
No major outage is currently reported for Williamson County, TN. Live coverage depends on whether local utilities report to ODIN.
Which utilities serve Williamson County, TN?
Tracked electric providers include City of Dickson, Duck River Elec Member Corp, Middle Tennessee E M C, Nashville Electric Service.
Nearby counties
Cheatham CountyDavidson CountyDickson CountyHickman County
Cities & towns in Williamson County

Franklin, Spring Hill, Brentwood. Outage counts for these communities are reported at the Williamson County level shown above.

ZIP codes in Williamson County

Outages are tracked at the county level; these ZIP codes fall within Williamson County.

37014, 37027, 37046, 37062, 37064, 37067, 37069, 37135, 37179, 38476

Electric providers serving this county

From EIA-861 service territory, with official reliability where reported.

ProviderOfficial SAIDI (EIA)LiveReport outage
Duck River Elec Member Corp3.2 hrsLive · total only-
Middle Tennessee E M C0.8 hrsLive · total only-
Nashville Electric Service0.0 hrsLive · total only-
City of Dickson6.5 hrsLive · total only-
Columbia Power System - (TN)2.4 hrsLive · total 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/47187 and /api/v1/counties/47187/history.