Renewable energy such as solar power are being promoted as an alternative energy instead of fossil fuels. This research investigates the conditions that Japanese households use renewable energy, and the kinds of renewable energy sources will be preferred by a conjoint analysis. We included monthly bills, management suppliers’ type, local new employment, benefits (tax credits, etc.) as conditions. The data were collected via a web-based questionnaire. The sample size is 1000 households. A random parameter logit model and latent class model are used for this estimation. From the estimation results, households clearly desire lower bills and evaluate solar power and do not highly evaluate wind power and fuel cells. They hope that residents are hired in renewable energy electric power plants. They prefer major new suppliers. We also found that they did not evaluate monetary incentives. The results conclude that monetary incentives are not always necessary to promote renewable energy.