I don’t know for sure, but I bet it takes a lot more mining to make enough solar panels + battery’s than powering enough fission plants. Plus solar panels wear out and have to be redone every 20-30 years from what I understand. Not counting maintenance and ones that get broke from natural disasters.
As I said though. I want both. solar/wind/etc definitely have a place. Just don’t think its good enough. Maybe if we have a massive break through on battery tech they will be.