Compressed Air Energy Storage (CAES)

From EPRI Storage Wiki
Jump to navigation Jump to search
Basic Technology CharacteristicsSMW-Info-button.png


How it Works: Air is compressed (charging), stored, and expanded (discharging).
  • Mature bulk storage
  • Low cost per kWh potential
  • Geographical limitations
  • Requires fuel for heating producing CO2 emissions
Technology Variations:
Applications: Bulk, long-duration services
AC RTE Efficiency: 40-55%
Cycle Life: 30 years
Technology Readiness Level (TRL): 9 - Fully Mature
Installed Capacity: ~500 MW