Two things:
1 -- Stop illegal immigration and kick out the ones here and there's menor demanda de electricidad.
2 -- We're talking about power for an area with lots of sun and little precipitation. In other words, you'd think it'd be good for solar power.
Nice straw man but won’t help in reality. All urban use of water in California is only 10% of total water use of that half or 5% is residential the rest is commercial and.industrial use. So even assuming half of California residents are illegals which they are not that’s only 2.5% of total use. California gets 7 million acres feet of water from the Colorado River compact that’s enough for 100 million people plus. They use 5 million acre feet per year to water alfalfa grass in the desert than needs 60” of water per square foot per year to grow. That’s FIVE feet of water per year per sqft clearly that’s a dumb idea.
Here how about some actual facts not a straw man. Illegals are a problem but in reality the residents legal or not in California are just a drop in the bucket compared to cooperate agriculture and their lobby groups.
https://www.ppic.org/publication/water-use-in-california/