This paper examines some of the initiatives that are currently under way around the world to assist and encourage pension funds to help finance green growth projects. It is drafted with a view to inform current OECD work on engaging the private sector in financing green growth. Different financing mechanisms are outlined, and suggestions made as to what role governments in general, and pension fund regulatory and supervisory authorities in particular, can play in supporting pension funds investment in this sector. The paper concludes with the following policy recommendations: provide supportive environmental policy backdrop; create right investment vehicles and foster.