A Dynamic Analysis of the Green Electricity Fund:Threshold Models Revisited

This study applies a threshold model proposed by Granovetter (1978) to analyze the dynamic diffusion process of donating behavior for renewable energy. Using data on people's willingness to donate for renewable energy under various predicted participation rates, we simulate how herd behavior spreads and the participation rate reaches the equilibrium. The participation rate at the equilibrium is estimated as 66.46% when the suggested donation is 500 yen, while it is 25.88% when the suggested amount is 1,000 yen. The influence of environmentalism and altruism is also examined, and we find that these motivations increase the participation rate 43.38% on average.