Powering the future

The world's first 300MW/1800MWh advanced compressed air energy storage (CAES) national demonstration power station in Feicheng, Shandong Province has been successfully completed and connected to the electricity grid.

At 11:18 am, on April 30, the world's first 300MW/1800MWh advanced CAES national demonstration power station with complete independent intellectual property rights in Feicheng, successfully achieved its first grid connection and power generation. The power station utilizes advanced CAES technology independently developed by the Institute of Engineering Thermophysics, Chinese Academy of Sciences. Zhongchu Guoneng (Beijing) Technology Co, Ltd invested in the project and led its construction. Power China Nuclear Engineering Company Limited is the construction party. It is currently a new type of CAES power station with advantages in scale, efficiency, and cost.

The R&D team made breakthroughs in key technologies for the 300MW CAES system, overcoming technical challenges such as a multistage wide-load compressor, a multistage high-load expander, a high-efficiency supercritical heat storage and heat exchange unit, an optimized design at full operation condition, and the integration of the whole system.

Compared to the 100MW CAES system, the unit cost of the 300 MW CAES system has decreased by more than 30 percent, and the system has 100 percent independent intellectual property rights. All core technologies are also independent and controllable.

The power station has a capacity of 300MW/1800MWh, with a total investment of 1.496 billion yuan ($207 million). Its rated design efficiency is 72.1 percent. It can achieve continuous discharge for six hours, generating approximately 600 million kWh per year.

This provides power support for about 200,000 to 300,000 households during peak electricity demand, saves about 189,000 tons of standard coal annually, and reduces carbon dioxide emissions by about 490,000 tons.