Abstract:This study aims to explore the out-of-home charging demand in California with a focus on electric vehicle (EV) commuting. Using regression techniques, we first develop a method to estimate destination-based car commuters by considering other modes so that we estimate EV commuters at destinations (Census block group level). We then estimate the total number of daily EV charging events and energy demand for charging at commute destinations using charging demand models with multiple scenarios. Some key findings from charging demand models are as follows. First, the statewide commute charging demand is 2,462 MWh/day for a total of 581,710 EVs within the state in 2020. Second, we observe a significant positive relationship between free workplace charging and charging demand at commute destinations. Third, a decrease in homebased charging accessibility increases out-of-home charging demand. Lastly, increases in the range of electric vehicles (EVs) are less critical in altering charging behavior, which may imply that the average range of the current EV fleet is already sufficient for commuting.