Energy storage system (ESS) can mediate the smart distribution of local energy to reduce the overall carbon footprint in the environment. South Korea is actively involved in the integration of ESS into renewable energy development. This perspective highlights the research and development status of ESS in South Korea. We provide an overview of different ESS technologies practiced in South Korea with a special emphasise on the electrochemical energy storage systems. We also discuss the possible strategies for the sustainable development of ESS in South Korea.