Home charging access and the implications for charging infrastructure costs in the United States
As the electric vehicle market expands, substantial investment in home, workplace, and public charging infrastructure will be necessary. This analysis shows how additional efforts to expand home charging access can lead to overall reductions in the total costs required to deploy the necessary charging ecosystem.
The study finds the total private and public sector costs of deploying the necessary charging infrastructure through 2030 are reduced when the availability of home charging is increased. When the share of electric vehicle drivers with home charging access increases from 70% to about 82%, $5.6 billion worth of savings on projected total charging infrastructure investments could be achieved by 2030 by offsetting the need for additional public and workplace chargers. Although multi-family home chargers are more expensive than single-family home chargers, this analysis finds that expanding both private and multi-family home chargers can lead to total charging infrastructure network costs that are 1% to 20% less than one where home charging access is limited. Even in the most aggressive home charging access scenarios presented, around 2 million new non-home charger installations will be required over the next decade.
The analysis shows that there is significant potential to provide a greater amount of the U.S. population with access to charging at home, and that doing so would be particularly cost-effective. Policymakers would ideally consider supporting expansion of home charging access within their communities to encourage EV adoption and maximize limited public funds simultaneously.