NV Energy, Inc., formerly Sierra Pacific Resources, is an investor-owned holding company. The Company has six primary, wholly owned subsidiaries: Nevada Power Company (NPC), NV Energy, Sierra Pacific Power Company (SPPC), Sierra Pacific Communications, Sierra Pacific Energy Company, and Lands of Sierra. NPC and SPPC are referred to collectively as the Utilities. The Utilities operate three business segments: NPC electric, SPPC electric, and SPPC natural gas. Gas. Electric service is provided to Las Vegas and surrounding Clark County, and to northern Nevada and the Lake Tahoe area of California. Natural gas service is provided in the Reno-Sparks area of Nevada. The Utilities provide electric and natural gas services to a range of over one million residential, commercial, industrial and public sector customers. Major industries served include gaming/recreation, mining, warehousing/manufacturing, offices, health care, education, military bases and other governmental entities.