This month office and school furniture manufacturer, distributor and wholesaler OFM is celebrating the one-year anniversary of the 250-kilowatt solar farm it installed on the rooftop of its headquarters in Holly Springs, N.C. last August. The company has since been producing more energy than it uses.

OFM’s solar farm at present consists of 1,042 solar panels generating 322,500 kilowatts of energy each year which is sold to Progress Energy as part of its SunSense Commercial Solar PV program. This is a new initiative inspired by the North Carolina General Assembly, which mandates Progress Energy obtain three percent of its power from renewable energy sources in 2012 and up to 12.5 percent by 2021.