Underground space compressed air energy storage

What is underground compressed air energy storage (CAES) in lined rock caverns?

Underground compressed air energy storage (CAES) in lined rock caverns (LRCs) provides a promising solution for storing energy on a large scale. One of the essential issues facing underground CAES implementation is the risk of air leakage from the storage caverns.

What is compressed air energy storage (CAES)?

Storage needs to be cost effective, and it needs to be efficient, that is, we need to get a high proportion of the energy we put into storage back out again. Compressed air energy storage (CAES) is a promising, cost-effective technology to complement battery and pumped hydro storage by providing storage over a medium duration of 4 to 12 hours.

What are the challenges in underground storage of compressed air?

One of the key challenges in underground storage of compressed air in LRCs is the risk of air leakage from the storage caverns.

Can compressed air energy storage (CAES) be used in LRCS?

These results may help in the overall design of a monitoring and alarm system for the successful implementation and operation of CAES in LRCs. Compressed air energy storage (CAES) is a promising method for storing energy on a large scale.

How is energy stored in compressed air?

In Germany, a patent for the storage of electrical energy via compressed air was issued in 1956 whereby “energy is used for the isothermal compression of air; the compressed air is stored and transmitted long distances to generate mechanical energy at remote locations by converting heat energy into mechanical energy” .

Can a small compressed air energy storage system integrate with a renewable power plant?

Assessment of design and operating parameters for a small compressed air energy storage system integrated with a stand-alone renewable power plant. Journal of Energy Storage 4, 135-144. energy storage technology cost and performance asse ssment. Energy, 2020. (2019). Inter-seasonal compressed-air energy storage using saline aquifers.