Verified answer

Not really you need to consider the world energy demand at the moment and practically how much of it solar would provide.

In general solar photovoltaics are inefficient they only convert something like 20% max, not to mention the fact that they're intermittent and are not much use in colder countries... You couldn't run a countries electrical supply and demand like this.

Solar thermal on the other is good for warn water in your house but again limited.

What solar is good for is to take the edge of demand in energy and reduce our usage.

There is some fantastic research regarding nano particles etc at MIT but its a long way of.