# China energy storage technology development > Developing situation record from CLSTR: https://clstr.news/situations/china-energy-storage-technology-development > Updated: 2026-10-17T08:56:01.000Z. Sources: 9. Developments: 2. China is advancing several large-scale energy storage technologies to support renewable energy integration and grid stability. In Shandong province, construction has commenced on the Ruitan demonstration project in Yantai. This facility aims to be the first utility-scale plant to combine supercritical carbon dioxide (sCO2) power generation with a 100-megawatt molten salt thermal energy storage system. The water-free, closed-loop technology is designed to adjust loads significantly faster than traditional coal units and is expected to be operational by 2027. Further developments include the successful grid connection of a 100 MW/1,000 MWh compressed CO2 energy storage plant by China Huadian in Xinjiang. This long-duration facility is intended to provide 10 hours of storage. Additionally, a pilot project in Hebei province is testing a dual-technology approach by combining lithium-ion and sodium-ion batteries to optimize costs and system complexity. ## Timeline ### 2026-10-17: China advances energy storage with CO2 plant and lithium-sodium pilot China reports major energy storage milestones, including a 1,000 MWh compressed CO2 plant in Xinjiang and a dual lithium-sodium ion battery pilot project in Hebei using large-format cells. 2 sources. https://clstr.news/cluster/china-advances-energy-storage-with-co2-plant-and-lithium-sodium-pilot ### 2026-09-23: China begins construction on world-first sCO2 and molten salt energy plant China has begun construction on the Ruitan project, a world-first facility combining supercritical CO2 power generation with 400MWh of molten salt energy storage to improve grid stability. 7 sources. https://clstr.news/cluster/china-begins-construction-on-world-first-sco2-and-molten-salt-energy-plant --- Cite as: China energy storage technology development. CLSTR, https://clstr.news/situations/china-energy-storage-technology-development