Rockland sold its interests in Stephentown Spindle, LLC (“Spindle”) in April 2018.

Stephentown owns and develops flywheel-based projects to provide fast-response frequency regulation services to the grid.

Spindle owns a 20 MW facility in Stephentown, NY that commenced operations in 2011 and sells frequency regulation services to New York ISO under tariff rates. The facility sits on five acres and is comprised of 200 flywheels each with a peak power capacity of 100 kW and storage capacity of 25 kWh. Spindle was originally developed and built by Beacon Power (“Beacon”). Beacon operates the facility.

Spindle is also developing a second 20 MW facility in Hazle Township, PA with financial assistance from the Department of Energy and Commonwealth of Pennsylvania.

Rockland created Spindle in March 2012 in conjunction with the acquisition of Beacon Power.

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