German compressed air energy storage research

What is compressed air energy storage (CAES)?

The expansion potential is severely limited, especially in northern Germany where the balancing need is greatest. Compressed-air energy storage (CAES) is similar in its principle: during the phases of excess availability, electrically driven compressors compress air in a cavern to some 70 bar.

What is adiabatic compressed air energy storage?

RWE Power is working along with partners on the adiabatic compressed-air energy storage (CAES) project for electricity supply (ADELE). „Adiabatic“ here means: additional use of the compression heat to increase efficiency. When the air is compressed, the heat is not released into the surroundings: most of it is captured in a heat-storage facility.

Can compressed air energy storage improve the profitability of existing power plants?

New compressed air energy storage concept improves the profitability of existing simple cycle, combined cycle, wind energy, and landfill gas power plants. In: Proceedings of ASME Turbo Expo 2004: Power for Land, Sea, and Air; 2004 Jun 14–17; Vienna, Austria. ASME; 2004. p. 103–10. F. He, Y. Xu, X. Zhang, C. Liu, H. Chen

When will compressed air energy storage be available in China?

Only most recently a new build plant has been commissioned in China. In the Western hemisphere we recognize a strong and increasing interest in this solution, with the first projects to potentially enter operation as early as 2026/27. There are two different variants of Compressed Air Energy Storage solutions.

Where is compressed air stored?

Compressed air is stored in underground caverns or up ground vessels , . The CAES technology has existed for more than four decades. However, only Germany (Huntorf CAES plant) and the United States (McIntosh CAES plant) operate full-scale CAES systems, which are conventional CAES systems that use fuel in operation , .

What are the different types of compressed air energy storage solutions?

There are two different variants of Compressed Air Energy Storage solutions. The first is the already known (diabatic) version as it can be seen in Huntorf or McIntosh. Air from environment is compressed by means of several compressors and stored in an underground salt cavern.