It's an interesting idea.
If you don't want to wait, you can try one of these:
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
It's a sturdy solar panel that charges its own battery. Once that's done you can charge an ereader (or phone) several times.
With this and a good ebook library, my reader and I can go completely off the grid for a very long time!