Flywheels

ASPES Engineering AG - Graphic comparisons of power, rotor speed, and energy. Bibliography includes English and German titles.
Beacon Power - Makes 2 and 6 kilowatt-hour flywheel (kinetic-electric) energy storage units.
FAQ: Kinetic Energy Storage - ASPES Engineering AG site with technical information and theory on flywheels and design. Photos of failures.
Flywheel energy storage - Wikipedia - article includes equation for kinetic energy
Flywheel Energy Systems, Inc. - Private corporation to "bring flywheel technology to the marketplace" Rotors, testing, and systems.
Flywheel Theory - Basics of flywheel energy storage, with links to many other sites.
Flywheels - Technical paper and information on exotic bearings for flywheels.
Motor Generator - Brushless DC Motor - on motor types for high speed flywheel energy storage.
PowerCorp - Markets PowerStore flywheel system.
Regenerative Power and Motion - promotes company. (includes popup ad)
Regenerative Power and Motion: A Low-Loss Flywheel Battery - technology and applications of stationary model.
RPM's Flywheel Battery - Flywheel battery described as having near-zero storage (idling) loss, unlimited service life with no maintenance, ultra-high power conversion efficiency.
Tribology Systems, Inc. - Solid-lubricated bearing technology. Operational speeds can range up to 500,000 RPM, with temperatures up to 1000 F. Links to flywheel battery information.
Pentadyne/Liebert Flywheel Energy Storage System Wins the 'Perfect 10' Award - Release from Pentadyne tells of award (obtained with partner Emerson Network Power) from Consulting-Specifying Engineer magazine. (November 20, 2006)
Pentadyne Selected as ``Most Promising Company'' - at Energy Venture Fair V. Flywheel maker lauded. (November 22, 2004)
Technology Management & Funding Press Release - Announces addition of World Flywheel Consortium, Inc. (WFC) to its portfolio and demonstration unit with 0.5 kWh of energy and 40 kW of power. Contact information. (June 30, 1999)