The US will channel $350m into so-called long duration energy storage (LDES) demonstration projects as part of the Biden administration’s aim of developing a low-cost, reliable, carbon-free electric grid by 2035.

The Department of Energy (DoE) will fund as many as eleven pilots under the LDES initiative, which is focused on technologies able of delivering electricity for 10-24 hours, with the longer-view ambition orf cutting the cost of grid-scale energy storage by 90% inside the decade.

“Advancing [LDES] technologies is key to making energy generated from clean renewable resources – like wind and solar – available for 24/7 use, and is critical to achieving a decarbonized power grid,” said US secretary of energy Jennifer Granholm.