California is "bending the duck curve" with batteries:

Grid batteries reach stunning new peak of 44 pct of evening demand in world’s fourth biggest economy

https://reneweconomy.com.au/grid-batteries-reach-stunning-new-peak-of-44-pct-of-evening-demand-in-worlds-fourth-biggest-economy/

#renewableenergy

Grid batteries reach stunning new peak of 44 pct of evening demand in world's fourth biggest economy

Battery storage reaches a stunning new record in the world's fourth biggest economy, reaching 44 pct of evening demand. The biggest loser is gas.

Renew Economy

@bascule

And for reference: The batteries peak power delivery corresponds to that of seven EPR-II nuclear reactors.

... which would take 20-30 years to build.

@bsdphk @bascule The batteries would however generate radioactive waste that we have a hard time finding a good solution for... No wait that would be the reactors.