Comment by JuniperMesos

There are both red states and blue states in places in the US that are good for solar power (rural, lots of sun). The sunny American southwest with huge amounts of empty desert land good for solar arrays includes the states of California (blue), Arizona (red), Nevada (toss-up), New Mexico (blue), and Texas (red). And the party that a state's population prefers in presidential elections isn't stable over mutli-decade time periods, but this doesn't change suitability for solar energy production.