By this time next year, Google hopes to be 100 percent green.
The internet giant says it plans to pay for enough renewable energy to power all of its data centers and offices around the globe by 2017.
Google calls itself the "largest corporate buyer" of green energy in the world. The company is currently buying up 2.6 gigawatts — or just over two DeLoreans — of renewable power.
The facilities will still be hooked up to the regular power grid, so there's no way for Google to guarantee the power they're running on comes from renewable sources. But the company says it will purchase enough renewable energy credits to pump as much green energy into the grid as it takes in.
It's also made a point of supporting renewable energy projects that it thinks will continue to grow the green energy sector.
The environment isn't the only thing pushing Google away from conventional energy sources. The company notes prices for renewable energy have plummeted over the past six years.