Power Out Map
– 0% of Putnam out 0 customers out in Tennessee

Power outage history

Putnam County Tennessee

0.4hours

without power for the average customer in a typical year, 2018–2025

72nd most of 73 in Tennessee 94% below the national median

Worst outage on record Mar 4, 2025 4% of customers out · lasted 40 hours
Hours without power, average customer per year 0.4h / yr State average 5.8 h · national median 6.6 h
Major outages a year 0.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% – Median across major outages, from the peak
Longest single outage 40hours Mar 4, 2025, over 1% of customers out
Outage hours on storm days 58% Share falling on days with a NOAA storm report here
Worst year 2025 1.2 hours without power, average customer
Electricity customers 50,117 ORNL customer model · 7 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Putnam's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2025 was the worst well-recorded year, at 1.2 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Putnam, hours without power per customer

PutnamUS median countyTennessee average
0 2 4 6 8 0.4 ’19 0.3 ’20 0.1 ’21 0.1 ’22 0.5 ’23 0.3 ’24 1.2 ’25 US 6.6 TN 5.8

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Mar 4, 2025 Windstorm 1,928 4% 40 h – 31k
Mar 15, 2025 No storm report 2,070 4% 8.5 h – 11k
Mar 3, 2023 Windstorm 1,311 3% 1.8 h – 2.3k
Apr 1, 2023 No storm report 556 1% 4.2 h – 2.2k
Sep 27, 2024 Hurricane Helene 2,280 5% 2.2 h – 1.9k
Jun 3, 2020 No storm report 1,189 2% 1.5 h – 1.8k
Jun 28, 2025 No storm report 678 1% 2.5 h – 1.7k
May 5, 2025 No storm report 1,288 3% 1.2 h – 1.6k
Mar 29, 2020 No storm report 1,345 3% 3.2 h – 1.6k
Mar 3, 2023 Windstorm 592 1% 2.5 h – 1.4k
Dec 14, 2019 No storm report 684 1% 2.0 h – 1.4k
Dec 5, 2024 No storm report 2,330 5% 30 min – 1.2k

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Putnam from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • Windstorm 50%
  • No storm on record 42%
  • Tropical storm 4.2%
  • Thunderstorms 2.5%
  • Winter storm 1.5%

Who keeps the lights on

Utilities serving Putnam

As each utility reports to the Energy Information Administration for its whole Tennessee territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Volunteer Electric Coop Cooperative 685 436 5.80 13.1 105k
Upper Cumberland E M C Cooperative 344 255 – 13.7 46k
Caney Fork Electric Coop, Inc Cooperative 322 322 2.66 13.6 30k
City of Cookeville Municipal – – – 11.8 16k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across Tennessee

Where it is darkest

Hours / yr64+

All Tennessee counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 50,117 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →