Utilities go Results Found: 3 Button group with nested dropdown South Sioux City 1615 1st Ave. South Sioux City NE 68776 (402) 494-7503 Nebraska Public Power District 3601 Daniels Lane South Sioux City NE 68776 (402) 412-2554 MidAmerican Energy Company 401 Douglas St. Sioux City IA 51101-1213 (888) 427-5632