PNM Resources is an energy holding company based in New Mexico, in the United States. The acronym "PNM" by itself usually refers to the PNM Resources subsidiary Public Service Company of New Mexico. Headquartered in Albuquerque, PNM Resources has approximately 2,530 megawatts of generation capacity and serves electricity to 498,000 homes and businesses in northern and central New Mexico and parts of West Texas. Wikipedia