Peer-to-peer residential charger sharing: Exploring public perceptions in California

• Short-term private home charger rentals can quickly increase public charger supply. • Up to 38.6% of Level 2 charger households are willing to share their plugs. • About 28% of EV drivers would rent, seeking convenience and cost savings. • Liability concerns are the strongest deterrents for all participants. • Peer-to-peer sharing serves neighbors; 36.2% would walk up to 5 min, one-way. Peer-to-peer residential charger sharing (P2P-EVSE) matches private electric vehicle (EV) chargers with drivers seeking near-home charging alternatives. We surveyed 367 California EV households to assess their perceptions of this emerging service. Approximately 28% of respondents expressed willingness to host and 31% to rent through a P2P-EVSE platform. Hosts prioritized rental income, while renters valued charging convenience and cost savings. Liability concerns were the primary deterrent for both groups, with environmental benefits considered less critical. EV drivers in detached houses showed lower interest in renting, while those with above-average mileage and daily charging habits showed higher interest. The success of P2P-EVSE in reducing barriers to near-home charging access will depend on matching price offers and bids. Regions like Southern California, where cost disparities between home and public charging are greater, have a higher match probability. Further research and policy development to support P2P-EVSE could quickly integrate private chargers into the marketplace.