US energy storage developer Greensmith has added Aquion’s aqueous sodium-ion and ViZn’s zinc redox flow batteries to its product portfolio.
Aquion produces 1.5kWh S10 Battery Stack units, as well as an 18kWh system that combines twelve of its S10 units. The Pittsburgh-based firm claims a price point of $250/kWh.
ViZn produces an 80kW/160kWh zinc redox flow battery energy storage system housed in a 20-foot shipping container, as well as larger systems. Greensmith is understood to be developing a hybrid system using both the Aquion and ViZn storage chemistries.
Founded in 2006 founding, Maryland-based Greensmith has deployed 30 battery energy systems for 18 different customers and has a target of 23 MW installed by the end of 2014. Greensmith’s customers, mostly utilities, include San Diego Gas & Electric and Sacramento Municipal Utility District.