Batteries fed cheap solar power can provide relatively cheap peaking power whenever you want. That’s going to effectively be the maximum daily wholesale price per kWh long term.

Wind/Hydro and possibly some Nuclear might survive in that kind of an environment, but most industry insiders think Nuclear is basically doomed outside the far north without truly massive subsidies.

Small problem, we don't have enough batteries to power even one large city for a day and we won't have those for at least a decade.

A decade is fine.

While it would be nice if all the required nuclear or storage was installed decades ago, (1) we don't need to do this transition overnight, (2) a decade is on the optimistic side for rolling out new nuclear on this scale so it's not much of an improvement in that regard, and (3) most of the existing power infrastructure can be kept running until the batteries are available, and we get to keep looking at storage supply in the supply is still growing appropriately for the targets.