FTSE Group, the National Association of Real Estate Investment Trusts, and the U.S. Green Building Council are working on a sustainability index that measures the portfolios of real estate investment trusts to provide transparency about LEED certification and Energy Star ratings. Scheduled to launch on March 21, the green-property index will feature the same set of real estate investment trusts, or REITs, thatcomprisean existing benchmarkfor U.S. real estate. Each of 172 companies will receive a score based on the proportional value of their holdings that have achieved LEED certification or Energy Star labeling.
(http://www.greenbiz.com/news/2013/03/07/sustainability-ratings-real-estate-investments)
