To address these issues, this paper proposes a multi-stage collaborative planning method for transmission networks and energy storage. This method considers the non-line substitution effect of energy storage resources and their characterization methods. . US developers of large-scale battery storage stations have 18. 7 GW of new capacity under construction, according to S&P Global Energy Market Intelligence data, indicating another strong year for the grid's electrochemical shock absorbers. Capacity under construction has grown by a net 4. 5 GW since. . On September 12, 2025, the National Development and Reform Commission (NDRC) and the National Energy Administration issued a notice on the "Action Plan for Large-Scale Construction of New-Type Energy Storage (2025–2027)," explicitly listing solid-state batteries as a key technology for development. . China has published a national plan to promote large-scale energy storage facilities, encouraging investment and broader participation in the electricity market. The 'Special action plan for large-scale construction of new energy storage (2025-2027)' was published last Friday (12 September). . By 2027, the new energy storage system will have achieved large-scale and market-oriented development, with a stable level of technological innovation and equipment manufacturing capabilities at the forefront of the world. The market mechanism, business model, and standard system will be basically. . Electrical Energy Storage (EES) systems store electricity and convert it back to electrical energy when needed. 1 Batteries are one of the most common forms of electrical energy storage. The first battery, Volta's cell, was developed in 1800. pioneered large-scale energy storage with the. . Due to the large-scale integration of renewable energy and the rapid growth of peak load demand, it is necessary to comprehensively consider the construction of various resources to increase the acceptance capacity of renewable energy and meet power balance conditions. However, traditional grid. .