Hours Of Operations NorthWestern Energy Montana Bozeman NorthWestern Energy Hours of Operation and Locations in Bozeman, MT 4.8 - 111 votes 1 Locations in Bozeman www.northwesternenergy.com NorthWestern Energy Hours Category: Home & Garden NorthWestern Energy - Bozeman, MT 59715 121 E Griffin Dr(800) 586-1386 View Store Details Explore BozemanView More Apparel CostcoTJ MaxxRoss Dress for LessColdwater CreekCarhartt Sports CostcoTargetSport ChaletSportsman's WarehouseVans Jewelry CostcoKohl's OutletChico'sAvonAppraisal Services Recommend For You NSTAR Orlando Utilities Commission Otter Tail Power Company Peoples Gas Pepco Runnings Farm & Fleet Tucson Electric Power United Power Urgent Care of Connecticut Aero Energy