TOKUSHU TOKAI PAPER CO., LTD.’s Mishima Plant participated in the wholesale electricity market and began adjusting the operation of its own power generation facilities according to market prices and power supply and demand conditions. In addition to achieving cost reductions by purchasing electricity at low prices and selling electricity at high prices, it has also achieved “optimization of electricity demand” through upward and low DR. It is considered to be an initiative that will contribute to the elimination of the duck curve phenomenon, which has become a global issue due to the expansion of renewable energy.