Thirteen's the lucky number for Omaha Public Power District (OPPD). A subdivision of the Nebraska state government, OPPD generates and distributes electricity to residents and businesses in 13 counties in southeastern Nebraska. It operates and maintains its facilities without tax revenues and raises money for major construction through bonds. OPPD serves more than 356,000 customers in an area covering 5,000 sq. mi. The utility has a generating capacity of more than 3,235 MW, which is powered by primarily nuclear, coal, oil, and natural gas sources. It sells wholesale power to other utilities and offers energy consulting and management services.