My BIL and his friends already use a separate solar charger that charges their phones when they are up at the cabin (no electrical hookup). Solar chargers wear out before the units do, so I don't actually see any advantage here. It does make sense if you live in a 3rd world country where there is limited access to any electricity. I do think the number of people who live in the US who would need a solar powered ereader would be fairly limited. My sister fried her solar powered calculator when she left it out to get rays when she was in Wyoming last summer. Heat is an issue.
