Courtesy TechCrunch

In an effort to have its facilities run on more sustainable energy, Amazon announced that it will be installing solar arrays on the roofs of 15 global fulfillment and sortation facilities by the end of this year. The company—who has been criticized by Greenpeace for its usage of grid power, compared to other tech giants such as Facebook and Apple—hopes to have installed solar arrays across 50 buildings by 2020. The group of panels on a single building are expected to provide 80 percent the structure's energy needs.

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