Abstract:Energy storage technology is considered to be the urgent needs of solving instability and intermittent of renewable energy, as well as improving the system efficiency, security, and economy of traditional power system and district energy systems. Its status can be regarded as the strategic location in developing safe, highly efficient, and low-carbon energy technology for seizing the energy technical commanding point. In the field of intelligent microgrid and application of distributed renewable energy, energy storage technology has significant strategic demands and research values, and an enormous potential for development. Many energy storage technologies have rapid developments with distributed renewable energy generation and intelligent microgrid technology, in the fields of which, energy storage technology encounter lots of problems such as high-cost and immaturity. Because of this, only pumped hydroelectric storage is applied in large-scale. However, the proportion of renewable energy connected with power system will increase with the issues of energy and environment, and energy storage technology will have an important and irreplaceable role to play in power grid, client terminal, wind farm, and photovoltaic power station etc., which provides a new opportunity for developing and applying energy storage technology. The area of innovation in energy storage technology includes complementary application of energy type and power type energy storage technologies, energy integration system based on CHP and thermal storage, vehicle-togrid(V2G) technology, virtual power plant based on energy storage and compressed air energy storage with wind-solar complementary method. These energy storage technologies have their own features, advantages and application areas, and are gaining development rapidly. And some hi-tech and new industries, such as the new materials industry, specialized accessories and their processing equipment industry, special control equipment industry, and R & D and manufacturing industry, will be driven by them. At the same time, the development of energy storage technology in China cannot go without the protection and innovation of energy storage policy which tightly linked with the national infrastructure. Building competent functional department, improving management system, and introducing incentive policy would be the leading political measures for developing energy storage technology and macro policy, electrical price mechanism, and the technologies & standards for upgrading the energy storage application to its maturity would be the focus of the policy innovation of distributed energy storage.