Subsidiary of AGL Resources, AGLC serves 1.5 million customers in Georgia and Tennessee. Find customer service info and press releases.

Provides electric, gas, water, and wastewater services to 360,000 customers in the Knoxville, Tennessee, area. Refer to the service area map.

Tennessee utility company provides a history, office directory, and calendar, plus information on safety and conservation.

Founded in 1851, this division of Piedmont Natural Gas provides an emergency number, and info for those planning to dig.

Based in Chattanooga, TPCO is involved in wholesale power transactions and electric power generating projects. Read the tutorial on electricity.