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Energy Storage for a Resilient Grid

October 2014

Renewable energy is important to the future of our nation, but incorporating it onto the grid has proved challenging. Large-scale energy storage solutions can help solve this problem. The Vanadium Redox Flow Battery, developed by PNNL, increases energy density by 70 percent more than the previous technology, making it an attractive alternative for the power grid. This battery technology was licensed by UniEnergy Technologies and, thanks to $14 million in Clean Energy Fund grants from the State, is being deployed by a test group of Washington State utilities.

For two of the utilities, PNNL is providing analytical and technical support, including conducting benefits analyses, compiling field data for use cases, and designing acceptance testing plans. PNNL is also working with Avista and Washington State University to provide optimal control strategies for using the storage system at the Schweitzer Engineering Lab campus in Pullman, Wash.

PNNL scientists continue to enhance the battery technology, with a new vanadium prototype system already showing 50 percent increased density while maintaining more than 75 percent energy efficiency. This technology earned PNNL a 2014 Federal Laboratory Consortium Far West Region Award for Outstanding Technology Development. For more information, read the news release.


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