Rounding out the four largest grants was $7.2 million to develop low cost, megawatt-rated batteries capable of backing up and smoothing out the intermittent energy supply from wind farms and other renewable sources. Today, such power-grid-scale batteries are prohibitively expensive for most renewable energy applications.
EaglePicher Technologies of Joplin, Missouri, and the Pacific Northwest National Laboratory in Richland, Washington, will use the funds to develop a sodium beta alumina battery that will cost no more than $200 per kilowatt hour of capacity, compared with about $500 today.
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