According to this article, the real carbon footprint of a company is on average 4 times their own emissions (when you take into account their suppliers). A number of large corporations are doing something about it. WalMart is launching their One Gigaton by 2030 project. Apple is already close to 100% renewable energy. At a time when the world is biting its fingernails, waiting to see if the US will scrap the Paris Climate Agreement, the trend toward clean energy is only accelerating.