Nebraska Public Power District is a electric utility company in Nebraska, with a chartered territory including all or parts of 91 of Nebraska's 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 NPPD's chartered territory. NPPD's 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 NPPD's 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.