VRB Energy (formerly known as Pu Neng and Prudent Energy) designs and manufactures Vanadium Redox Battery Energy Storage System, an advanced flow battery system. VRB-ESS allows utility customers to balance load, bridge generation, and regulate voltage and frequency in one low maintenance system. The Company also sells or leases VRB systems and services to commercial onsite generators and telecoms companies to reduce their operating expenses and provide backup power.