Assessing the behavioral response of public fast charging station users to the EV 'hogging' penalty policy

Abstract

To prevent after-charge-idling at public charge facilities for Electric Vehicles (EVs), Korean government has enacted a law to impose fines on vehicles that uses public-fast-charger longer than one hour (Hogging). This study aims to analyze how the duration usage of public-fast-charger change before and after the policy. By panel regression models, individual-level change of charge duration and hogging duration has both proved to be significantly decreased. The decrement was shown largest in morning, which showed longest mean connection duration to avoid risk. The hogging duration showed significance decrease only in metropolitan area. Charge efficiency of fast-chargers are slightly increased as the average charge rate has significantly increased after the policy implementation. Therefore, the implemented policy significantly reduced the targeted action and proved that it was partially successful in increasing the efficiency of the infrastructure empirically.