The White House has created a program that will allow low income communities to have access to solar. The cost of solar equipment has decreased steadily over the last several years. And now with the help of companies, such as SolarCity, and the new government program, low cost solar will be available to lower income homes.
http://fortune.com/2015/07/07/solar-panels-not-just-for-rich-home-owners-anymore/?xid=yahoo_fortune