Hours Of Operations Otter Tail Power Company North Dakota Wahpeton Otter Tail Power Company Hours of Operation and Locations in Wahpeton, ND 4.8 - 14 votes 1 Locations in Wahpeton www.otpco.com Otter Tail Power Company Hours Category: Home & Garden Otter Tail Power Company - Wahpeton, ND 58075 2111 15th St N(701) 642-6664 View Store Details Explore WahpetonView More Apparel H & MJCPenneyRainbowDotsRoxy Sports RoxySnap Fitness Recommend For You Peoples Gas Pepco Runnings Farm & Fleet Tucson Electric Power United Power Urgent Care of Connecticut Aero Energy Bellagio Salon Blind Barber Dairyland Power Cooperative