http://www.realestaterama.com/2017/01/26/u-s-green-building-council-releases-annual-top-10-states-for-leed-green-building-ID040147.html

(RECAP: USGBC announced the Top 10 States for LEED, an annual ranking that highlights states throughout the United States that made significant strides in sustainable building design, construction and transformation over the past year. LEED is the world’s most widely used and recognized green building rating system. A continued presence on the list from Maryland and Virginia has reaffirmed the mid-Atlantic region, which includes Washington, D.C., as the center of green building.)