China’s first 100-megawatt compressed carbon dioxide energy storage project connected to the grid

On October 2, China's first hundredmegawattscale compressed carbon dioxide energy storage project — the China Huadian Xinjiang Mulei Compressed Carbon Dioxide Energy Storage Project — was successfully connected to the grid, marking new progress for our country in the field of largecapacity compressed carbon dioxide energy storage. Located in Mulei, Xinjiang, the project has the capability to store electricity during offpeak hours and discharge during peak periods, and can respond flexibly according to grid demand. Using carbon dioxide as the circulating medium, the project achieves energy storage and release through processes such as compression, heat storage, heat exchange, and expansionbased power generation, with continuous power generation time exceeding 6 hours. According to reports, the project is equipped with multiple gas storage tanks, liquid storage units, and heat storage units, and its key core technologies are independently controllable. After completion, the project is expected to generate about 200 million kWh of electricity annually, save about 50,000 tons of standard coal each year, reduce carbon dioxide emissions by about 170,000 tons, and help improve the grid's capabilities for peak shaving, valley filling, frequency regulation, and voltage regulation.