Well, I accept powering an entire home would be a bit much, but ideas like this would be a help, surely?
I've long pondered how to use the energy we produce whilst cycling, to do something useful. I mean, you can get dynamos to power lights, etc, but a couple of hours ride could charge a mobile, etc.
I was in the science Museum on Sunday, and they've got a KERS unit from an F1 car on display, and it got me thinking. We use a lot of energy, but aren't particularly efficient at producing it. I'm sure there's loads of ways we could each make a small difference. Think of kids; loads of energy, run about all over the place; put that to good use! 😀