Telefónica Deutschland with its core brand O2 has largely achieved the Corporate Responsibility (CR) targets set in 2016 with the Responsible Business Plan 2020 one year earlier than originally planned. The target of reducing Co2 emissions by 11 percent compared with 2015 was significantly exceeded with a reduction of 28.5 percent by the end of 2019. While data volumes rose by 106% by the end of 2019 compared to 2015, energy consumption fell by 15%. Overall, this means a reduction in energy consumption per data volume of 56.1%. The company has been sourcing 100% of its electricity from renewable sources since 2016.