@MSUB Downtown Campus (Enter from Rimrock Rd) The Montana Clean Energy Fair is the premiere event for comprehensive, clean-powered living in the Big Sky State. Experience the power of cost savings with renewables and efficiency. Attend top tier workshops, meet a host of local and regional exhibitors, and check out the EV car show. This indoor-outdoor Fair is family friendly. You will walk away with the practical tools to save money, support local, and experience energy freedom and resilience. Electrify your life at the Montana Clean Energy Fair in Billings!