Workers installed a new, 19-foot-high TVA sign Thursday on the Lookout Place building along Market Street in downtown Chattanooga.
The Tennessee Valley Authority acquired its Chattanooga Office Complex in 2011 after its initial 25-year lease expired for the 1.2 million-square-foot complex.
TVA is installing more energy efficient LED lights on the TVA logo and other exterior lights and has replaced heating and air conditioning units to also limit energy consumption in the four buildings.