PHILADELPHIA (November 20, 2013) — The U.S. Green Building Council (USGBC) announced that LEED v4, the newest version of the LEED green building program, launched at the annual Greenbuild International Conference and Expo in Philadelphia on Nov. 20. LEED has been a benchmark for the design, construction and operation of high-performance green buildings since 1998.
More than 100 projects across the globe already use the new LEED system.
