RetroGreen Energy is Minnesota’s specialty insulation contractor. We focus on using high performance insulation and building science to improve home performance and energy efficiency. Our work encompasses all types of existing buildings including residential, multi-unit residential, agricultural, industrial and commercial buildings. RetroGreen Energy services Benton, Cass, Crow Wing, Douglas, Grant, Hubbard, Itasca, Kanabec, Koochiching, Mille Lacs, Morrison, Otter Tail, Pope, Stearns, Stevens, Todd, and Wadena Counties.