The portfolio of renewable energy sources for achieving the three E policy goals

►This study aims to propose a portfolio of renewable energy sources to achieve energy, environmental, and economic policy goals for Taiwan. ►Non-pumped storage hydropower performs best to achieve energy and environmental goals. ►Wind energy performs well to accomplish environmental goal. ►Solar energy is the most preferred alternative to achieve economic goal. ►The portfolio of non-pumped storage hydropower, wind energy, and solar energy can accomplish the three E policy goals at the same time.