Beekissed
Mountain Sage
There are ways of utilizing solar heat that don't cost a lot. Types of construction, utilizing the direction of the sun in winter, preheating water with the sun before it hits the hot water tank....the possibilities are numerous. As far as producing energy, I believe its a little cheaper to have a grid-backed system than a battery back-up. Also, some states have big tax breaks for folks who invest in alternative energy systems.