Google just announced that it will buy 842 megawatts (MW) of wind and solar energy in the U.S., Sweden and Chile to power its data centers around the world. It’s the largest purchase of renewable energy ever made by a non-utility company. By doing this, the company increases its overall renewable energy capacity to 2 gigawatts. Google compares the environmental impact of that to “taking nearly 1 million cars from the road.” The purchase contributes to Google’s ambition to power 100% of their operations through renewable energy by 2025. Apple and Microsoft made similar pledges. Google’s 14 data centers worldwide currently run on 37% clean energy, so there’s more to come. “With world leaders coming together at the COP21 UN conference on climate change in Paris this week, there’s no better time to focus on renewable energy,” the company writes.