Early fall is a good time for tree planting in Wisconsin. Placed strategically on the south and west sides of buildings, trees provide shade from the summer sun that can improve comfort and reduce costs of air conditioning. Broadhead Power and Light recognizes this natural energy efficiency strategy and is providing $50 rebates to their customers toward the purchase of shade trees through the end of September. Even without a rebate, planting a tree to shade south and west windows is a value proposition for your building and for the environment (trees make oxygen and absorb carbon dioxide- a greenhouse gas, provide wildlife habitat, and help reduce urban temperatures).