Are you interested in building your own solar panels and/or windmill ? If so, you probably have heard about Frank Patrick.
Frank is the author of "Home Made Power Plant", a manual about solar and wind energy.
Basically this manual will teach you how to convert wind and sun into electrical energy and to build your own energy devices at home, and how to do it very cheaply.
You do not have to be an engineer to follow Franks plans, if you are just willing to spend some time, and you have a little experience with diy projects, you should be able to build your own power plant, and reduce your energy bills greatly, maybe even eliminate them completely and have the energy company pay you instead.