A new online platform, arc, announced at this year’s Greenbuild conference, will allow buildings to measure their energy performance against several green building rating systems, benchmark energy use against similar buildings, and make improvements. LEED-certified buildings can use arc to improve and benchmark against other certified buildings around them. Buildings that have not certified yet will be able to use arc to make incremental sustainability improvements and eventually achieve LEED certification. “The LEED rating system revolutionize