Beacon Power To Begin Construction of First Flywheel Frequency Regulation Plant

Beacon Power Corporation will begin construction on the nation’s first full-scale 20-megawatt (MW) flywheel frequency regulation plant later this month, at its site in Stephentown, New York.

All state and local construction-related permits and approvals for the plant have now been received. Beacon will start initial site work while continuing to progress toward closing a US $43-million loan with the Federal Financing Bank, with the support of a a loan guarantee commitment from the U.S. Department of Energy (DOE) that Beacon received earlier this year. The loan is intended to support construction of the plant.

“We’re extremely pleased to be breaking ground on our first 20-megawatt flywheel plant this month,” said Bill Capp, Beacon president and CEO. “Thanks to the support of a number of agencies, organizations and individuals, including the Federal Energy Regulatory Commission, Department of Energy, New York ISO, the New York State Energy Research and Development Authority and the Public Service Commission, as well as local officials in Stephentown, we can now move forward with construction.”

Frequency regulation is an essential grid service that is performed by maintaining a tight balance between electricity supply and demand. Beacon’s 20 MW plant has been designed to provide frequency regulation services by absorbing electricity from the grid when there is too much, and storing it as kinetic energy in a matrix of flywheel systems. When there is not enough power to meet demand, the flywheels then inject it back into the grid, thus helping maintain proper electricity frequency (i.e., 60 cycles/second).

Thanks to its ability to recycle electricity efficiently and act like a “shock absorber” to the grid, the flywheel plant will help also support the integration of greater amounts of intermittent wind and solar power resources.


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