Arkansas researchers say parallel concrete plates instead of packed rock inside a single storage tank would be an effective, safe and cheaper way to store solar energy.
A Hawaii project will use geothermal power to make hydrogen by electrolysis; the hope is to use the hydrogen stabilize the grid, making room for more renewables.
ARPA-E-backed researchers at USC borrow from the Pepto-Bismol ingredient list to turn iron-air batteries into a promising way to do large-scale energy storage.
Can a lithium-ion battery combined with a home solar power system ease peak load demand? The power utility in Sacramento is testing the proposition.
A U.K. startup gets $22 million to test its system of Pumped Heat Electricity Storage, which would become wind power’s best friend if it works.
Struggling A123, savaged by Republicans as an Obama-backed failure, uncorks Nanophosphate EXT, lithium-ion technology that excels at extreme temperatures.
Could “brown liquor,” a renewable byproduct of paper pulp mills, be the key to making sustainably produced batteries for renewable energy storage?