Creating Energy

I have long wondered if I (personally) shouldn't be doing something to reduce dependence on gas and oil. So I was delighted to see that one of our neighbors has covered his roof with solar panals!

 












How much money does this cost? How much money will they save? At what point is an installation like this cost-effective? These are all good questions to ask...














But perhaps a better one is: Will I be doing something that makes a difference? If so - and I can afford it - maybe I should just do it because it's a step in the right direction.