The New York Power Authority (NYPA) will install and demonstrate a high speed Flywheel Energy Storage System (FESS) at the Long Island Rail Road (LIRR) Malvern station in Long Island NY. The scope of the project is a turn-key installation of a 2.5 MW FESS to provide traction power voltage support for LIRR to mitigate voltage sag problems, reduce power peak demand charges, and offset costly electric distribution upgrades.

Primary participants:

- New York Power Authority (NYPA)
- MTA Long Island Rail Road
- Pentadyne Power Corporation


Site Overview



Energy Storage System


System Connection and Operation


Data Acquisition and Monitoring


EnerNex Corporation


Preliminary Findings