I bought a few solar flashlights. I keep them by my windows. They work great. However, I bought a solar charger for my riding mower, and another solar battery pack and after a few months, it won't hold a charge and the one on the mower doesn't charge the battery much at all. I personally think solar is a great idea, but the technology is just "not there yet" for anything major around the house.
What's your take?