Make Downtown Knoxville Green Make the Tree Green!! As the leaves of the tree turn green, we are closer to reaching our downtown goal of 400 green power blocks. Help us make downtown green by signing up for Green Power Switch©. Downtown residents and businesses: Buy Green Power and help us reach our goal of 400 blocks - one for each of the 400 city blocks in downtown Knoxville, extending from just past Interstate 40 to the north, Blount Avenue to the south, Hall of Fame Drive to the east and 11th Street to the west. Block for block, we'll have a green downtown. The downtown Green Power Switch© initiative was launched in April 2008 by KUB, the city of Knoxville, Tennessee Valley Authority (TVA), the Southern Alliance for Clean Energy, the Central Business Improvement District, the Knoxville Chamber and the Market Square District Association. Green power, which is energy created by renewable resources such as wind, solar power and methane gas, is provided by KUB through TVA's Green Power Switch© program. Each 150-kilowatt-hour block of green power purchased costs $4, which is added to your monthly utility bill. Learn more about the Green Power Switch© program and sign up for green power.