Prudent Energy is the designer, manufacturer, and integrator of the patented Vanadium Redox Battery (VRB) Energy Storage System, a long-life, environmentally friendly "flow battery" system. With a growing number of megawatt-scale VRB-ESS projects installed or under development, Prudent Energy warehouses electricity to balance load, bridge generation from one plant to another, and control voltage and frequency - all in one low maintenance system. Prudent also sells or leases VRB products to industrial and commercial onsite generators to reduce their operating expenses via lower utility bills. The company is privately owned by prominent investors, including CEL Partners, Draper Fisher Jurvetson, DT Capital Partners, GS Energy, idInvest Partners, Jafco Ventures, Mitsui Global Investment, Northern Light Venture Capital, Sequoia Capital, and State Power Group Co., Ltd. Founded in 2007, the Prudent Energy group of companies maintains corporate offices in Bethesda, Maryland and Beijing, China, with research, development, and assembly facilities in the United States, Canada and Asia. Prudent employs over 170 professionals at a number of locations in the US, Canada, and Asia.