the worst location in the continental U.S. is only a factor of two worse than the best solar location.
Solar is dead. Most of the US doesn't get enough sun to make solar feasible.
This article has a good solar efficiency study for the entire US. In summary, there's not a lot of difference in the contiguous US - about the only place where solar is significantly worse off is Alaska.
The substructure of the universe regresses infinitely towards smaller and smaller components. Behind atoms we find electrons, and behind electrons, quarks. Each layer unraveled reveals new secrets, but also new mysteries.
- Academician Prokhor Zakharov, "For I Have Tasted the Fruit"
So you think that money is the root of all evil. Have you ever asked what is the root of money? -- Ayn Rand