Value of different electric vehicle charging facility types under different availability situations: A South Korean case study of electric vehicle and internal combustion engine vehicle owners

The availability of charging facilities plays a critical role in electric vehicle (EV) adoption; however, as EVs continue to diffuse and the initial lack of charging availability is improving in some countries, governments must consider additional charging facility rollout policies as EVs can be charged through various types of facilities, including those at households, workplaces, and public areas. Previous studies mainly utilized real-world charging data or surveys conducted solely on EV owners for investigating these aspects. However, the opinion of conventional internal combustion engine vehicle (ICEV) owners is also important when making policy decisions for EV charging facilities. As EVs are expected to positively impact the environment, ICEV owners may also value the rollout of EV charging facilities. Moreover, some ICEV owners are potential future EV owners. Therefore, along with surveying EV owners, this study utilized the contingent valuation method for ICEV owners to estimate how their willingness to pay (valuation) changes under different facility rollout stages (initial and additional) and different types of charging facilities (public and workplace). The results showed that ICEV owners also imposed significant value for EV charging facilities. However, they imposed higher values than EV owners on public chargers during the initial diffusion stage.