Dripbydrip is right, just google "buy solar panel" you'll find many alternatives. But the thing is we don't know the exact quality of the product.
Well, I searched on google for some guidance on any DIY green power be it solar or wind. And I stumbled upon a good review site [http://gogreenpowereasy.com] which reviewed some best DIY Guides on homemade green power available on the market. There are about five products that are recommended.
To be honest I didnot buy yet the guides, but they all look very informative and useful. And one of them the Green-Power Easy gave away free good report.
Just have a look and please made your informed decision.
Well Stephen, That's all I can share. I hope this info is useful to you, although not directly answering your question [the answer is inside those guides.]
Have a greener life and earth!
