Investing in solar isn't just for energy companies any more. Giant corporations like Google (NASDAQ:GOOGL) and Apple (NASDAQ:AAPL) are making significant investments in renewables like solar power in an effort to cut energy costs at numerous facilities nationwide. Tech companies aren't the only ones making this transition either. In this video, contributor Aimee Duffy takes a look at which companies are making these moves, and how much energy -- and money -- they are actually saving.