Retailers who want to get on top of high energy prices should check their rooftops. There's a lot of potential green up there.
Just ask Shaw's Supermarkets. The East Bridgewater, Mass.-based division of Supervalu was a finalist in this year's Green Roof Awards of Excellence landscape competition for its Prudential Center store in Boston. The 50,000-square-foot urban supermarket's rooftop garden, adjacent to the building's community room, includes grass, trees and other plants that do