did you want explanations for the nuclear fixation or just want to argue? it's a way cooler technology, even if the real world intrudes upon its implementation.
it's not the cost of solar you've got to look at, but the cost of solar + batteries to cover the problem with solar: it doesn't work when the sun isn't shining. Now, that's less of a problem for most of California (it's an issue in snowy Tahoe), and grid-sized energy storage can cover the shortfall, but nuclear fission simply doesn't have that problem. It has other problems instead, which make solar the better choice for California, imo, but not everywhere is LA.
A solar plant will produce at full capacity an equivalent of ~5 hours a day.
Nuclear will produce at full capacity for 24/7/365.