System evaluation of power generation with thermal energy storage for massive variable renewable energy penetration

Fujii, Shoma*; Yamano, Hidemasa   ; Ohno, Shuji  ; Hayafune, Hiroki

A modified price-following model was developed to perform annual simulations, and case studies were performed for systems combining Solar power, wind, and SMR with thermal storage. The results show that, when comparing wind power and solar power as heat source, solar power is more effective in applying thermal energy storage technology because it allows for a larger price differential between heat charging and discharging. It was also found that a stable heat source such as SMRs allows a larger amount of electricity to be sold with the same amount of heat storage material.