1. Cavalier Rural Electric Co-op Inc 1111 9th Ave, Langdon, ND 58249 Coordinate: 48.7617,-98.34935 Phone: (701) 256-5511
2. Otter Tail Power Co 405 8th Ave, Langdon, ND 58249 Coordinate: 48.76031,-98.37007 Phone: (701) 256-5411