It’s vital to cut carbon emissions. But tech companies have a responsibility to go a lot further than that—and the ability to do so.

For many years, the biggest technology companies have made pioneering commitments to reducing their energy footprint. Google and Apple claim to be completely carbon neutral: Apple says all its facilities are powered entirely by renewable energy, while Google has become the world’s largest buyer of renewable energy to offset its energy costs. In 2018, Apple said it had reduced carbon emissions by 58% since 2011. Microsoft is on track to reach 60% renewable energy across its data centers by the end of 2019, while Facebook’s goal is to reach 100% renewable energy by 2020. In 2019, Amazon announced that it is aiming to make half of its shipments carbon neutral by 2030, and the company says it has eliminated 244,000 tons of packaging materials, avoided 500 million shipping boxes, and continues to invest in electric vehicles, aviation bio fuels, and renewable energy.