Modular Green Substation means a combination of Modular Substation and Green Substation. A modular substation is a substation in which all of its facilities will be manufactured in modular type, stored in a container, and transported to a trailer. Green substation is a substation equipped with compensation facilities such as ESS, and FACTS to link renewable energy to power system by guaranteeing power quality. This paper deals with plans for development and application of Modular Green Substation to cope with emergencies in the case of substation failure and to improve the acceptability of renewable energy.