Solar Powered Radio
This is a simple idea that can be added to your electronic project to help demonstrate applications of solar energy.Solar power provides advantages for remote locations where there is a need for power but no electricity available. For example, if you go to the mountains for a camping trip or to the beach for a day in the sun there are no electrical outlets to conveniently plug in to.
   Solar Powered Radio
This is full detail on Solar Powered Radio website
www.makeitsolar.com