Where can I learn about installing energy efficiency products in homes as a career?

Hey all, I want to take up a career in energy conservation in the home. Basically I want to learn how to install and connect solar panels and other modifications to homes for decreasing utility costs and being more environmentally conscious. I was wondering is anyone knows any schools or other institutions that would be able to give me the training I need. Or if you think I should just go and work in the electrically field and branch off on my own. Any help would be greatly appreciated.