Recently, the Hebei Institute of China Power Construction signed a contract for the survey and design of the 100 MW / 1000 MWh CO2 Compression Energy Storage Power Station project with Huadian Group in Mulei County, Xinjiang.
Located in the Changji Hui Autonomous Prefecture of Xinjiang, this project aims to build a CO2 compression energy storage system with a planned capacity of 100 MW, an energy storage duration of 8 hours, and a power generation duration of 10 hours. The system will utilize a non-combustion-based CO2 compression energy storage technology. This project represents a new type of energy storage demonstration project that complements large-scale wind and solar power plants in desert, gobi, and arid areas. It is also the largest CO2 energy storage power station in the world to date.
CO2 energy storage is an innovative technology that allows for the conversion and storage of energy by utilizing the phase change of carbon dioxide between gas and liquid states. The fundamental principle of this technology is to compress gaseous CO2 at normal temperature and pressure into a liquid during periods of low electricity demand, using surplus electricity. The thermal energy generated during the compression process is stored. During peak electricity demand periods, this stored thermal energy is used to heat the liquid CO2 back into a gas, which then drives a turbine for power generation.
Once completed, this project will significantly alleviate the peak load pressure on the Xinjiang power grid, reduce the curtailment rates of wind and solar power, and address the challenges associated with the large-scale integration of renewable energy sources into the grid. Additionally, it will enhance the stability and reliability of the power grid. The project is poised to advance the development of new energy storage technologies towards large-scale, industrialized, and market-oriented applications, thus promoting the upgrading of high-end energy storage technologies in China.
The significance of this project extends to the construction of a clean, low-carbon, safe, and efficient new energy system in China. It aligns with the country’s goals for energy transformation and carbon neutrality, facilitating a transition towards more sustainable energy solutions.
As the global demand for renewable energy continues to rise, projects like the CO2 compression energy storage system will play a crucial role in integrating renewable energy into existing power infrastructures. By leveraging innovative storage technologies, China aims to establish a more resilient and adaptive energy system that can meet the challenges of fluctuating energy supply and demand.
With the signing of this contract, the Hebei Institute and Huadian Group are set to collaborate closely on the design and implementation of this groundbreaking project. The successful execution of this energy storage solution will not only enhance the energy landscape in Xinjiang but also serve as a model for similar initiatives worldwide, highlighting China’s commitment to advancing energy storage technology and fostering sustainable energy development.
The CO2 compression energy storage project in Xinjiang is expected to pave the way for further investments and innovations in the field of energy storage, driving the country towards its ambitious energy goals.
