Typical CAES project costs range between $800/kW to $1,500/kW depending on scale and configuration – significantly lower than lithium-ion battery systems for long-duration storage. Final Project Report, High-Temperature Hybrid Compressed Air Storage: Ultra-Low-Cost Energy Storage System Alternative to Batteries This report was prepared as the result of work sponsored by the California Energy Commission. It does not necessarily represent the views of the Energy Commission, its. Summary: This article explores the cost dynamics of compressed air energy storage (CAES) systems, analyzing capital expenses, operational factors, and market trends. Learn how CAES competes with other storage technologies and discover actionable insights for project planning. However, conventional CAES systems rely on the combustion of natural gas, require large storage volumes, and operate at high pressures, which. Vilayanur Viswanathan, Kendall Mongird, Ryan Franks, Xiaolin Li, Vincent Sprenkle*, Pacific Northwest National Laboratory. Neither the United States government nor any agency thereof, nor any of. The Department of Energy's (DOE) Energy Storage Grand Challenge (ESGC) is a comprehensive program to accelerate the development, commercialization, and utilization of next-generation energy storage technologies and sustain American global leadership in energy storage. At a utility scale, energy generated during periods of low demand can be released during peak load periods.