Exact reason we just expanded our solar system from 12 to 16kw. We intend to be 99.9% self-sufficient and give the big middle finger to SDG&E (San Diego Gas & Extortion for those unfamiliar).
When I used to live in El Lay, I would frequently drive to San Diego and environs. I recall that someone had erected a billboard along the highway (I don't remember which one) soon after crossing the San Diego County line. The billboard read, "Welcome to San Diego County! Owned and Operated by San Diego Gas & Electric."
This was back in the '70s-'80s, so I presume the billboard is long gone. But it validates your belief.