Prudent Energy, with offices in the United States, Canada, and China, is an energy storage technology developer, manufacturer and systems integrator, specializing in the patented VRB Energy Storage System (VRB-ESS™). With a global market focus, Prudent Energy provides high-quality environmentally safe, energy storage systems and solutions to improve power quality and reliability, enable large-scale penetration of renewable energy generation, and improve the efficiency of energy distribution.

Prudent Energy announced its acquisition of the assets of VRB Power Systems Inc. in January 2009. This acquisition included the purchase of all patents, trademarks, know-how, equipment and most of the material owned or controlled by VRB Power. Additionally, the core technical team of VRB Power has joined the combined company.  As of May 2010, Prudent Energy has 29 far-reaching patents worldwide encompassing core cell stack designs, electrolyte composition, system designs, as well as several application patents including use with wind farms, off-grid applications and smart grids.

Prudent Energy is combining the extensive efforts and successes of VRB Power with the cost reduction and manufacturing capabilities afforded in China. Over the course of the next year the company expects to see significant cost reductions in all parts of the technology as well as enhanced supply chain and partnership agreements. This latter step is essential for the development and long term supply of low cost electrolyte. The company is actively testing its proprietary membrane technology and has developed low cost bipolar plate materials. Prudent Energy's large scale systems are built on a 175kW modular basis allowing for easy scaling to multi-megawatt size with very high availability rates, essential for utility applications. In addition these packaged modules can be easily erected on site.