You don't have to have a heart for clean energy--just be smart.  And you don't have to be Google to understand sustainability, or do you?  According to Greenbiz.com, Google executives believe that the company will generate long-term returns by investing in wind farms, utility-scale solar plants and even solar panels on the rooftops of homes and businesses. They are putting their money where thieir brain is--in clean energy. 

Last year, Google invested more than $915 million in clean energy projects -- solar, wind and transmission.

That's a lot of money, even for Google, which had $38 billion in revenues in 2011. The investments don't appear to be core to the company's mission of organizing information, and they have attracted criticism, as well as some careless reporting, implying that the Internet giant is exiting the alternative energy business.

Does Google have an energy policy? Does it need one?