Abstract:The authors amassed their significant and varied expertise in plug-in electric vehicle (PEV) charging infrastructure to undertake a study of optimal DC fast charger siting within Pacific Gas and Electric’s (PG&E’s) utility service territory. The study combined EV adoption forecasts from Ricardo, PlugShare data on California’s existing EV charging infrastructure, and a detailed model from UC Davis, in order to forecast likely unmet charging demand in 2025. The authors further utilized existing literature, expert interviews, and PG&E’s distribution network data to formulate an algorithm, which outputs driver- and cost-friendly potential charger sites within areas of greatest unmet demand. Finally, the team created a micro-siting rubric to enable charging network developers on the ground to score, weight and sort DC fast charger sites to offer maximum support to EV adoption at least cost.