In September 2015, Siemens announced its intention to cut the carbon footprint of its operative business in half by 2020 and to become climate neutral by 2030. To achieve this, Siemens is focusing on four levers: energy efficiency, decentralized energy systems, intelligent e-mobility solutions and the purchasing of clean electricity. Siemens is investing €100 million in improving the energy efficiency of its own buildings and production facilities with expected annual savings of about €20 million from 2020 onwards. Since the program launch, Siemens has managed to reduce its CO2 emission by more than 25%. In 2016, Siemens joined the Carbon Pricing Leadership Coalition (CPLC).