Source : Adapted from FCCC/CP/2006/3 and informal communication with GEF secretariat . Abbreviations : GEF = Global Environment Facility , GHG = greenhouse gas , OP5 = Removal of barriers to energy efficiency and energy conservation , OP6 = Promoting the adoption of renewable energy by removing barriers and reducing implementation costs , OP7 = Reducing the long-term cost of low greenhouse gas emitting energy technologies , OP11 = Sustainable transport .