In 2007 Google achieved carbon neutrality. I think that's the carbon offsets you mention. In 2017 Google matched 100% of power usage with renewable energy. So

In 2007 Google achieved carbon neutrality. I think that's the carbon offsets you mention. In 2017 Google matched 100% of power usage with renewable energy. So that's not buying carbon offsets, that's buying renewable energy, although AIUI, due to temporal and spatial limitations, it can't be used 100% of the time and in certain situations gets resold as non-clean while the actual datacenter uses non-clean energy. Google has committed to use actually clean power 100% of the time by 2030. Full disclosure I work at Google. https://sustainability.google/commitments/carbon/ https://sustainability.google/commitments/carbon/