Power Out Map

Municipal utility · · TN

Columbia Power System

In 2025, the average Columbia Power System customer in Tennessee was without power for 143 minutes (2.4 hours), 23% less than the median Tennessee utility.

Outage minutes per customer 143min 2025, including major storms
Excluding major storm days 86min The everyday reliability of the network
Outages per customer a year 1.95 SAIFI, 2025
Residential price 12.7¢/kWh 2025 · Tennessee median 13.0¢

Reliability

Minutes in the dark, year by year

Average minutes without power per customer in Tennessee (SAIDI), with and without major event days, against the median Tennessee utility.

0 200 400 600 800 1,000 1,200 20182019202020212022202320242025 All days 143 No major storms 86 TN median 186

Price

Residential cents per kWh

Revenue from full-service residential customers divided by their sales, as reported to the EIA.

0.0 5.0 10.0 15.0 20182019202020212022202320242025 This utility 12.7 TN median 13.0

Territory

Counties served

Counties where Columbia Power System reports customers. Open one for its full outage history.

Tennessee

MauryWilliamson

Source: U.S. Energy Information Administration, Form EIA-861, 2018–2025. Reliability uses the IEEE 1366 standard where the utility reports it. Residential customers in 2025: 32,032.