Luminant is a subsidiary of Energy Future Holdings, which was formerly known as TXU Corporation. Luminant is one of the largest purchasers of wind-generated electricity in Texas. The company produces nuclear and coal-fueled power. It operates Luminant Energy, which optimizes the purchase and sale of energy and also provides certified carbon offsets. The company s subsidiary, Capgemini Energy, maintains supplier and contractor information and registry of various projects and locations. Luminant operates through a network of small and minority- and women-owned businesses. It additionally operates a supply chain support center. The company maintains a land and mineral department that provides real estate services. In addition, it offers Web site that features property listings.