Technology
Compressed Air Energy Storage (CAES) is a technology that stores energy by using excess electricity (often from renewables) to compress air and store it in underground caverns or tanks. When electricity is needed, the compressed air is released, heated (sometimes with natural gas or other heat sources), and expanded through turbines to generate power. CAES can help balance the grid by storing renewable energy generated during low-demand periods and releasing it during peak demand, acting as a large-scale energy storage solution.