an engineer works on the inspection and maintenance of equipment at roof-mounted solar power plants of condominium buildings,

adjustment alternative architecture blue buildings business cell checking condominium construction eco ecology electric electrical electricity energy engineer engineering environment equipment grass green hand his houses industry innovation inspection installation lightbulb maintenance man nature operate operation outdoor panel people performance photocell photovoltaic plant plants power renewable roofmounted safety setup solar solarization station sunlight system tabletop technician technology voltage worker works