The cost of Lithium-ion batteries is still dropping and sodium-ion batteries use even lower cost materials, so it’s likely that the long duration energy storage – LDES – will not catch up for some time. One LDES is green hydrogen, and hydrogen LDES systems seem to have stagnated, partly due to the falling prices of batteries. <\/p>\n\n\n\n
Long-duration storage ‘increasingly competitive but unlikely to match Li-ion’s cost reductions’<\/a><\/blockquote>