To be fair, CA is one of the only places that's true, largely due to PG&E fuckups paired with a legislature keen to grant them unlimited money to kick back to shareholders.
I know there are other places with high energy costs, but for the majority of the US (both by land area and population count) solar doesn't make economic sense without additional incentives.
And even that analysis assumes that you're forced to use electricity. Many home appliances are vastly more efficient dollar-wise when powered by various petroleum products.