Beacon Power LLC broke ground on a 20 MW flywheel energy storage site in Hazle Township, Pa.
The first 4 MW of storage are expected to begin commercial operations in the PJM Interconnection in September, with the full plant planned to become operational in mid-2014. Flywheels help to provide frequency regulation by absorbing excess electricity from the grid and storing it until it is needed, according to the company.
The company already has a 20 MW flywheel energy storage plant in operations in Stephentown, N.Y. The company filed for Chapter 11 bankruptcy in October 2011 and was bought by Rockland Capital in April 2012.
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