Mercury Marine today was named a winner of the 2020 Energy Efficiency Excellence Award by Wisconsin’s Focus on Energy program. The award, timed to coincide with Earth Day, honors Wisconsin businesses, organizations and communities that make outstanding efforts toward energy efficiency. The winners are chosen by Focus on Energy staff who work with program participants across the state. Focus on Energy is a statewide Wisconsin program that empowers people and businesses to make smart energy decisions with enduring economic benefits.…