In the United States, T-Mobile US has set itself particularly ambitious climate protection goals and is looking to cut its CO2 emissions by 95 percent between 2016 and 2025. This will primarily be achieved by using Power Purchase Agreements (PPAs) to increase the share of renewable energy to 100 percent by 2021. In this connection, T-Mobile US signed up to the RE100 initiative in 2018. This initiative brings together companies who are endeavoring to obtain 100 percent of their energy requirements from renewable sources. T-Mobile US has also set itself the goal of cutting emissions in the upstream and downstream value chain (Scope 3 emissions). In the United States, the majority of Scope 3 emissions are generated in the upstream value chain. The aim is to reduce total Scope 3 emissions per customer by 15 percent compared with 2016.