Primus Power

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Primus Power

Primus Power is a producer of energy storage products, namely sustainable liquid batteries used to support the electric grid. Based in Hayward, California, it has developed a zinc bromine flow battery, called the EnergyPod, with support from the Department of Energy. The EnergyPod can scale from 25kW to 25MW for use on corporate campus or on site next to the substation, wind farm, or solar farm. The low maintenance Primus Power batteries allow five hour discharge and twenty year life span, necessary for grid applications. [1][2][3][4] Primus is developing projects for Puget Sound Energy and Bonneville Power Administration and The Marine Corps Airstation in Miramar, California.[5][6][7] The company shipped its first system to Asia in early 2015.[8] Primus signed a partnership with Microsoft in 2016 to supply battery support for Microsoft datacenters globally.[9]

On February 21, 2017, the company announced production of their second generation product, EnergyPod 2. Streamlined for production, it features a small footprint, reduced cost of goods, high reliability components, and a sturdier enclosure. The modular unit is designed to last twenty years and supply a system capability from 25kW to 25MW with five hour discharge duration.

The company has raised more than $80[10] million in venture funds and government backed grants and is manufacturing systems for customers. The company's energy storage systems decouple instantaneous electricity demand from supply generation, bolstering the stability and security of the electric grid, and helping accelerate the penetration of wind and solar energy. The company has numerous patents in chemistry, cell design, and system engineering, which make the energy density greater while improving reliability and life span thus enhancing the price /performance.[11]


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