Realization solar power availability in the Main Belt

Thus, to the extent that solar energy ever becomes really viable on the
surface of the Earth, it also becomes viable deep into the heart of the
Main Belt. Pretty exciting stuff !! In "The Millennial Project", Marshal Savage said something pretty close to "The Belt is not the dimly-lit realm of Orpheus that one might expect." I remember he compared the insolation at a Main Belt asteroid to that of a Scandinavian country.