Fusion is solved, at a distance, with solar, wind, and batteries. Half an hour of sunlight on Earth can power humanity for a year. Long duration storage remains to be solved for, but look how far we’ve come in 1-2 decades.

(at this time, short duration storage will likely be LFP, sodium, and other stationary friendly chemistries, but this could change as the state of the art advances rapidly and the commodities market fluctuates)