It may be expencive to set up solar panels, but my pool is solar heated. There are a whole bunch of black pipes on the top of my porch and they heat the pool in the summer. It was a bit more expencive when installing it, but we don't have to pay for gas to heat the pool so it turned out to be quite the investment. As canpolitics said, it's not really that practical to power your entire house with it because there just isn't that much opportunity for it to charge up, especially if you live in a place where it is overcast a lot.
Thats Nice better