Nevada Power Company (NPC) was a Las Vegas-based company that produced, distributed, and sold electricity in the southern part of the state of Nevada. In 2005, it had over 700,000 electric customers in parts of three Nevada counties — a service area of more than 4,000 square miles (10,000 km2). In 1998, Nevada Power merged with Nevada's other major utility, Sierra Pacific Resources. It continued as a subsidiary of Sierra Pacific until 2005, when the company changed its name to NV Energy.

NV Energy is a public utility which generates, transmits and distributes electric service in northern and southern Nevada, including the Las Vegas Valley, and provides natural gas service in the Reno–Sparks metropolitan area of northern Nevada. Based in Las Vegas, Nevada, it serves about 1.3 million customers and over 40 million tourists annually.