An emissions quantification framework that is widely used by businesses, industry associations, NGOs, and other organizations. Some initiatives use the GHG Protocol for their emissions quantification requirements. GHG protocol has published several standards but is recognized for these two emission quantification guidelines: (1) Corporate Standard – for scope 1, 2, and energy-related scope 3, and (2) Corporate Value Chain (Scope 3) Standard – for life-cycle emissions, both upstream and downstream