Ask any physics professor. Solar is cleanest thermally and with regard to CO2. If you continue with him or better, an engineer, they will both tell you that to think it could any where meet even a small fraction of our energy needs is not just sophomoric but downright retard level cognition. (or yer standard DUmmie libturd.)
Solar panels can’t meet the current densities required for anything other than simple lighting and small appliances.
Large solar reflector/steam plants do meet the demand however they require LOTS of land.
Kind of like some particular ranch land in southern Nevada...
My father has a PhD in physics and used to teach at Stanford. He laughed when I told him about your CO2 claim.
He said, “Sure, but only if you use nuclear to power every single step of producing the raw materials and the manufacturing process, not to mention all the transportation involved at each step. Or you could just use nuclear power for all your electric needs and leave solar panels to the granola munchers and the folks that live off grid.”