Conservation efforts on the facilities side include installing speed drives on motors, more efficient air compressors, and retrofitted lighting in both parking garages and two buildings. BConserves, a conservation program that began in 2006, has resulted in a 10 million-kilowatt (15 percent) reduction over the previous year. As of January 1, 2007, the college’s electricity provider generates 59 percent of its portfolio from renewable resources. The college has recently increased its purchase of renewable energy credits threefold from the previous year.