Wireless telecommunications providers—a.k.a. mobile phone companies—are becoming some of the most powerful and profitable entities in the world. However, as their sphere of influence increases, so does their carbon footprint. Always on mobile devices like smartphones and tablet computers are making their way into the homes and businesses of billions of people around the world. Telecommunications giant Verizon has decided to seek help from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) to improve energy efficiency in its products and for the industry as a whole.