hackertourist writes "A novel type of electricity storage was recently added to the New York power grid. The unit, supplied by Beacon Power uses flywheels to store energy. The unit is intended to replace gas turbines in supplying short-term peaks in power demand (also known as frequency regulation). It can supply up to 20 MW, using 200 flywheels." Link to Original Source
Seen on a button at an SF Convention:
Veteran of the Bermuda Triangle Expeditionary Force. 1990-1951.