Nebraska Public Power District is a electric utility company in Nebraska, with a chartered territory including all or parts of 91 of Nebraskas 93 counties. It was formed on Jan. 1, 1970, when Consumers Public Power District and Platte Valley Public Power and Irrigation District (PVPPID) merged to become Nebraska Public Power District. The utility is governed by an 11-member Board of Directors, who are elected from NPPDs chartered territory. NPPDs revenue is mainly derived from wholesale power supply agreements with 53 towns and 25 rural public power districts and rural cooperatives who rely totally or partially on NPPDs electrical system. NPPD also serves about 75 communities at the retail level. About 5,000 miles of transmission lines make up the NPPD electrical grid system, which delivers power to about one million Nebraskans. NPPD uses a mix of generating facilities to meet the needs of its customers. This includes a nuclear plant (CNS), three steam plants (Canaday, GGS and Sheldon), nine hydro facilities, nine diesel plants and three peaking units. NPPD also purchases electricity from the Western Area Power Administration, which is operated by the federal government. The average mix of fuel to supply NPPDs customers in a typical year is 60 percent from coal, 20 percent from nuclear, 20 percent from hydro and .1 percent from gas or oil. NPPD is also a member of the Mid-Continent Area Power Pool and the Western System Power Pool.