Flywheel Energy Storage

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Basic Technology CharacteristicsSMW-Info-button.png


Cross section of a flywheel module. Courtesy of Stornetic.

How it Works: Rotating mass stores rotational kinetic energy.
  • Fast response time
  • High power capability
  • Low energy capacity
  • High self discharge rates
Technology Variations:
Applications: Power quality, frequency regulation, wind generation stabilization; high energy flywheels are being developed for longer duration applications.
AC RTE Efficiency: 85-90%
Cycle Life: >100,000 cycles
Technology Readiness Level (TRL): 7 - Deployed
Installed Capacity: ~60 MW