Offering some of the highest leadership on local climate action and regional coordination, King County and its 39 cities have established the collective goal to reduce countywide sources of greenhouse gas (GHG) emissions 25% by 2020, 50% by 2030, and 80% by 2050, all compared to a 2007 baseline. To understand what it would take to achieve adopted GHG targets, King County and partners of the King County-Cities Climate Collaboration (K4C) established specific, quantifiable pathways nicknamed the “wedge analysis”. In light of changing federal and state policies the County contracted ICLEI USA to update its wedge analysis in 2019.