What are the site selection criteria for compressed air energy storage

What is compressed air energy storage?

Compressed Air Energy Storage (CAES) is an emerging mechanical energy storage technology with great promise in supporting renewable energy development and enhancing power grid stability and safety. Conventional CAES typically utilize constant-volume air storage, which requires throttling to release high-pressure air.

What are the different types of compressed air energy storage (CAES)?

Figure 1. Various options for compressed air energy storage (CAES). PA-CAES: Porous Aquifer-CAES, DR -CAES: Depleted Reservoir CAES, CW-CAES: Cased Wellbore-CAES. Note: this figure is not scaled. Figure 2. A sealed mine adit as a potential pressure vessel. Note - CA: compressed air, RC: reinforced

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.

Where is compressed air stored?

Storage: The compressed air is stored, typically in large underground caverns such as salt domes, abandoned mines, or depleted natural gas reservoirs. Above-ground alternatives include high-pressure tanks or specially designed vessels, though these are generally more expensive and limited in capacity.

How much power does a flexible air storage system produce?

A larger flexible air storage device was deployed approximately 3 km from Toronto Island, at a depth of around 55 m in Lake Ontario. The energy conversion equipment is placed onshore, and the UW-CAES system can achieve an output power of approximately 0.7 MW, providing electricity for around 330 households.

Should compressed air be injected into a depleted oil & gas reservoir?

However, care is required to inject compressed air into depleted oil and gas reservoirs due to the potential for a combustible environment at the surface or in the subsurface (Kim et al., 2023). CAES also offers extended energy storage durations, enabling the storage of electricity for prolonged periods.