PNM Resources, Inc. (PNMR) is an investor-owned holding company of energy and energy-related businesses. As of December 31, 2011, PNMR�s primary subsidiaries are Public Service Company of New Mexico (PNM) and Texas-New Mexico Power Company (TNMP). PNM is a public utility with regulated operations engaged in the generation, transmission, and distribution of electricity. TNMP is a wholly owned subsidiary of TNP Enterprises, Inc. and Subsidiaries (TNP), which is a holding company that is wholly owned by PNMR. TNMP provides regulated transmission and distribution services in Texas. PNMR owns 50% of Optim Energy, which is focused on unregulated electric operations, principally within the areas of Texas covered by Electric Reliability Council of Texas (ERCOT). In November 1, 2011, PNMR sold First Choice Power. In April 2013, PNMR, through its PNM unit, acquired the entire share capital of Delta Person LP.