Government Energy Policy, Business and Technology

100-Hour storage? DOE launches $30M program to explore new technologies

Utility Dive: Lithium-ion batteries have about 90% or more of the stationary energy storage market, but they have their limitations. Most notably, li-ion batteries have limited durations. Energy storage experts say new li-ion projects are beginning to stretch those durations up to the four-hour mark, but the technology is not well suited for longer durations.

Longer duration energy storage solutions are expected to become more important as more intermittent generation sources, such as wind and solar power, come onto the grid. The DAYS program is designed to address those needs by enabling a new set of applications that can provide long lasting backup power and facilitate the integration of renewable energy resources onto the grid.

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