USGBC increases LEED energy performance requirements
New projects registering for LEED 2009 must now meet a higher threshold for minimum energy performance. Projects must now earn at least 4 of a possible 19 points in Energy & Atmosphere Credit 1, Optimize Energy Performance. An energy savings of at least 18 percent is required for a new building, while 14 percent is the minimum savings for a major renovation over the baseline rating, according to ASHRAE 90.1-2007.
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