Enlarge / Amazon solar rooftop. (credit: Amazon)

On Tuesday, Amazon said that it would install solar panels on 15 of its fulfillment and sorting centers around the US in 2017. That may not seem like a lot, but the massive warehouses in California, New Jersey, Maryland, Nevada, and Delaware account for millions in rooftop square footage and will ultimately reflect 41 MW of installed capacity.

“Depending on the specific project, time of year, and other factors, a solar installation could generate as much as 80 percent of a single fulfillment facility’s annual energy needs,” Amazon wrote in a press release. That energy will provide electricity for everything from keeping the lights on to powering Amazon Robotics at fulfillment centers.

Amazon is finding stride with other major companies, but it's a bit short compared to some of its more ambitious peers. For example, Google announced in December that by the end of 2017 it would be using a carbon offsets program to pay for as much renewable energy as all of its data centers and offices worldwide consumed. The search giant said at the time that the move to renewable energy wasn’t just for show—it was about avoiding energy price fluctuations long term.

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