Pinnacle West Capital Corporation (PNW), primarily operating through its Arizona Public Service Company (APS) subsidiary, delivers retail and wholesale electricity services predominantly within Arizona. The company manages the full scope of electricity provision, encompassing generation, transmission, and distribution, leveraging a diverse energy portfolio that includes coal, nuclear, natural gas, oil, and solar power facilities. Its robust infrastructure for power delivery features approximately 5,814 pole miles of overhead transmission lines and roughly 74 miles of subterranean transmission lines.