In late 2016, Google announced that it expected to offset all of its office and data center electricity use with 100 percent renewable energy in 2017. Today, the company says it achieved that goal. Google has been working on reducing its carbon footprint and purchasing more renewable energy for some time. In 2007, it committed to being carbon neutral, which it did by purchasing solar and wind energy as well as carbon offsets, and throughout the years, it has reduced its reliance on offsets and purchased greater amounts of renewable energy. In 2017, for every kilowatt-hour of energy Google's operations consumed, it added a kilowatt-hour of solar and wind energy to the grid.