Energy Storage Flywheel: The Power Ring

Power Ring Gen I Energy Storage Flywheel

High-speed carbon fiber composite flywheels are a good solution for energy storage applications where high power is required for short durations with limited available space. Flywheels also have the benefit of little or no degradation in performance over a lifespan that can exceed 20 years, regardless of the number of charge/discharge cycles.

LaunchPoint Technologies Inc. has received venture funding to continue the development of the Power Ring: a new, more cost-effective kinetic energy system. The Power Ring system will have a power output that is larger than any other commercially available carbon fiber flywheel and is designed to handle high duty cycle applications.


Power Ring Gen II Energy Storage FlywheelWell suited applications include:

  • Uninterruptible Power Supply (UPS) systems for large facilities
  • Rail wayside energy storage for reduced energy costs and infrastructure deferrals
  • Energy storage for directed energy weapons, such as solid state lasers

The Power Ring was initially developed at LaunchPoint with research and development funds from the following agencies:

  • Department of Energy, Inventions & Innovations Program (Award # DE-FG36-05GO15163);
  • National Science Foundation (Award #OII-0539520);
  • United States Navy (Award #N00014-07-M-0334 for a flywheel permanent magnet motor; and Award #N00178-03-C-3043 for NSWC Electromagnetic Aircraft Launch System (EMALS) ); and
  • New York State Energy Research and Development Authority (NYSERDA Award #NO2-134).

The project has given LaunchPoint the opportunity to further develop several important technologies, including:


Energy Storage Flywheel Motor Coils Under Construction
Gen II Flywheel Motor Coils
Under Construction
               Energy Storage Flywheel Motor Coils
Gen II Flywheel Motor Coils