Washington DC.  DC first published a sustainability plan in 2013.  The plan aimed to reduce GHG emissions by 50% by 2032, and by 80% by 2050, compared with 2006’s baseline numbers.  This plan was modified in 2018 to achieving a net-zero carbon footprint by 2050.  See “Climate of Opportunity: A Climate Action Plan for the District of Columbia”. www.doee.dc.gov .  It has been reported that DC leads the U.S. in the area of green roofs, with 1,000,000+ s.f. of roof area in the city receiving some sort of green roof treatment.  “Washington, D.C. Leads the Nation in Green Roofs”. www.planetcitizen.com  7/31/18.  The nation’s capitol is ranked #3 of 100 cities in the country on the ACEEE Energy Scoreboard, 2021.  It also received the nation’s first Platinum certification in LEED for Cities.  It scores an “A” grade in the cdp.net climate ranking.