I don't see how that's possible, give the latest bids for solar + battery come in at under $33 / MW hour, ($20 / MW hour after subsidies):

https://www.pv-magazine.com/2019/06/28/los-angeles-seeks-rec...

$33 is under 1/2 the price of new coal generation. To the engineers who build this stuff it's all over - talking to them they seem to thing the long term price of generation and storage will drop to near 0.