Solar can't produce electricity at night, it's hardly a a credible sole competitor if the power surge requires a constant power supply. Renewables are most of the time coupled with gas power plants to handle this.
Why is this any different than the sheer size of manufacturing and natural resources to extract other forms of energy?
Oil, natural gas, coal also all take vast amounts of capital investment and resource extraction to implement.
And California has the most expensive electricity prices in the US.