Solar panels are not new technology, but they are expensive and take awhile for the investment to pay off. Jigar Shah developed a way to get businesses to go green. Instead of paying for solar panel installation, a business agrees to pay Jigar's company, SunEdison, for at least 10 years to provide solar energy from panels SunEdison will install on their property. SunEdison, however, retains ownership of the panels, so SunEdison can sell those panels or keep them and the money they generate to keep putting up more solar panels. Here is a link to a short slide show
that explains it better.