Decarbonizing power systems is crucial to mitigating climate change impacts and achieving carbon neutrality. Increasing renewable energy supply can reduce greenhouse gas emissions and accelerate the decarbonization process. However, renewable energy sources (RESs) such as wind and solar power are characterized by intermittency and often non-dispatchability, significantly challenging their high-level integration into power systems. Energy storage is acknowledged as a vital indispensable solution for mitigating the intermittency of renewables such as wind and solar power and boosting the penetrations of renewables. In the CSEE JPES Forum, five well-known experts were invited to give keynote speeches, and the participating experts and scholars had comprehensive exchanges and discussions on energy storage technologies. Specifically, the views on the design, control, performance, and applications of new energy storage technologies, such as the fuel cell vehicle, water electrolysis, and flow battery, in the coordination and operation of power and energy systems were analyzed. The experts also provided experience that could be used to develop energy storage for constructing and decarbonizing new power systems.