News

# $120+ Million DOE Programs Target Energy Storage and Grid Resilience September 19, 2018 by Paul Shepard Today, the U.S. Department of Energy (DOE) announced plans to provide$120 million over five years to renew the Joint Center for Energy Storage Research (JCESR), a DOE Energy Innovation Hub devoted to advancing battery science and technology, led by Argonne National Laboratory.

Also today, the DOE announced the selection of 10 projects as part of a new Advanced Research Projects Agency-Energy (ARPA-E) program, Duration Addition to electricitY Storage (DAYS). Awardees will develop energy storage systems to provide reliable, affordable power to the electric grid for up to 100 hours, enhancing grid resilience and performance.

"The Department of Energy is committed to researching innovative energy technologies and discovering opportunities to make America's energy infrastructure more competitive and more secure," said Under Secretary for Science Paul Dabbar. "The DAYS awardees will take a good look at what tomorrow's grid-scale storage could be, and work to develop the technologies that get us there."

Most energy storage systems deliver power over a limited time to alleviate congestion, stabilize grid frequency and voltage, or provide intraday shifting services. DAYS projects' extended discharge times will enable a new set of applications for grid storage, including long-lasting backup power and greater integration of intermittent, renewable energy resources.

DAYS projects will explore a new design space in electricity storage, exploiting opportunities for smart tradeoffs that keep costs low in electrochemical, thermal, and mechanical systems.

DAYS project teams will work to combine the long-term power output of technologies like pumped storage hydroelectric (PSH) systems with the flexibility of battery systems that can be deployed in multiple environments. PSH power provides more than 95% of stationary electricity storage capacity on the U.S. grid today, but there have been few new installations due to geographical and financial challenges.

Lithium ion batteries, meanwhile, have experienced a rapid growth in deployment on the grid, but high cost limits viability in long-duration applications.