How an N.C. Furniture Maker's Bright Green Roof Powers Up Its Bottom Line

From where Abel Zalcberg sits in his office at OFM headquarters in Holly Springs, North Carolina, he can't see the 250-kilowatt solar photovoltaic system on the roof, but its ROI is a glaring factor in his bottom line. His company -- an office and school furniture manufacturer, distributor, and wholesaler -- will produce over 300,000 kilowatts of electricity per year with the solar farm, and it won't use a watt of it. It's all sold to Progress Energy, a Raleigh-based power company. OFM's...