[nine_k]

Transmission from Arizona or Nevada to California looks reasonable. The cost may be reasonable, too, at least the Nevada part.

[bombcar]

The eastern half of Southern California is already desert so you might as well just use that, though one of them had trouble getting of the ground and costs weren't the greatest: https://en.wikipedia.org/wiki/Crescent_Dunes_Solar_Energy_Pr...

Others, including https://en.wikipedia.org/wiki/Ivanpah_Solar_Power_Facility are doing better

[ncmncm]

Except, desert is a dumb place to put solar.