A Study on Policies for Sustainable Investment on Renewable Energy at the Post-FIT Era

摘要

This paper estimates a future wholesale power market price with the power generation mix model and discusses policies for renewable energy. The result of power generation mix model analysis describes that a massive introduction of renewable energy would stagnate the wholesale power market price. If Japan would increase a total amount of renewable energy continuously, it would suppress the wholesale power market price. Renewable energy would impair their profitability under lower market prices in some regions. Japan will need some policy measurements to promote their sustainable growth for the future low carbon power generation mix, considering regional differences of power generation mix. The Government of Japan has already decided to revise their policy for the utility-scale PV and biomass from FIT (Feed in Tariff) to the auction scheme in order to alleviate cost burdens for promoted renewables by FIT. This paper presents study on policies for sustainable investment on renewable energy at the post-FIT era to increase the share of renewable energy in the future generation mix beyond 2030.