Assessing the Charging Needs of Multi-EV Households in California

Electric vehicles are a key piece of California's plans to achieve a zero-carbon transportation system. Today, electric vehicles make up nearly 10% of new vehicle sales in California and 2% nationwide. While most research of electric vehicle adoption has focused on the first vehicle a household buys, most households in California own two or more vehicles, and these vehicles must be electrified too. Moreover, an increasing share of electric vehicle sales are going to households that already have one or two electric vehicles, and 9% of households in the most recent phase of the UC Davis eVMT survey have multiple electric vehicles. There is a great deal of uncertainty around the needs and behavior of multi-EV households but charging multiple vehicles is likely to be challenging for many more households than charging a single vehicle is. This project will determine the market penetration and charging infrastructure needs of multi-EV households by region and community in California from 2022 to 2040, with a particular focus on how access to charging will affect the rate at which households acquire additional EVs and on the difficulties of expanding EV ownership in Disadvantaged Communities in California.