User preferences among households in hydrogen electricity storage using photovoltaic panels

In studies on the effective use of renewable energy sources, the use of hydrogen as a storage medium for electricity has become a prominent topic. In 2020, a web-based survey was conducted of 1000 residents in western Japan who used a photovoltaic power generation system in their homes. Of the total respondents, 30% had at least some knowledge regarding hydrogen electricity storage. As part of the survey, a choice experiment was conducted to determine the respondents’ willingness to pay for improving or changing four attributes of hydrogen electricity storage. The respondents were randomly divided into two groups: one that was given information about carbon prices for reducing greenhouse gas emissions from residential energy use, and another that was not given any information. The carbon prices were calculated based on the information provided for each storage profile. Willingness to pay was calculated using mixed logit models. Including the carbon prices in the choice questions reduced the variance in the willingness to pay.