The NGFS, launched at the Paris One Planet Summit on 12 December 2017, is a group of central banks and supervisors, which on a voluntary basis are willing to share best practices and contribute to the development of environment and climate risk management in the financial sector, and to mobilize mainstream finance to support the transition toward a sustainable economy. The NGFS brings together 108 central banks and supervisors and 17 observers. Together, they represent five continents and over 85% of global greenhouse gas emissions, and are responsible for the supervision of all of the global systemically important banks and two thirds of global systemically important insurers