Abstract

Premium Power and its partners will demonstrate a multi-hour, zinc bromide batterybased energy storage system (ESS) for load shifting, peak shaving, renewable system integration, and support for micro-grid operations. The project is based on Premium Power’s trailer-mounted 500 kW, 6-hr TransFlow 2000 energy storage system, providing capacity on demand. The TransFlow 2000 is a fully integrated system that comprises energy storage, power conditioning, system control, and thermal management subsystems. Two utilities will demonstrate this technology, National Grid and Sacramento Municipal Utility District (SMUD). Three ESSs are to be demonstrated with National Grid at locations in Massachusetts. Two ESS’s will be integrated into a single 1MW/6 hr system installed next to a 605 kW photovoltaic (PV) array in Everett, MA and the other ESS will be interfaced with a 600 kW wind turbine at the Holy Name High School feeder in Worcester, MA. Two ESS’s will be installed in Sacramento, California, one at the SMUD headquarters substation serving the SMUD campus micro-grid and one at a substation serving the Anatolia III SolarSmart HomesSM community development that will have 600 homes totaling 1.2 MW of photo-voltaic (PV) generating capacity. The headquarters storage system will improve micro-grid operations, emergency operations, and augment peak period campus operation with non-peak generated electricity. National Grid and SMUD will deploy, operate, and monitor the TF2000 units in their respective systems for two years.