Carbon ratings in a maturing carbon market: A conversation

Carbon credit ratings have become influential market infrastructure, informing pricing, purchasing, project design and investment decisions. BeZero Carbon, Calyx Global and Climate Bridge agree that ratings provide valuable project-level analysis beyond programme and methodology eligibility frameworks. However, they differ on formalising ratings within compliance markets. Ratings remain expert opinions, methodologies are not standardised, and mandatory use could turn a few private providers into gatekeepers before adequate oversight exists. Participants also discuss rating costs, unequal burdens on smaller developers, dynamic reassessments when evidence changes, and buyers’ tendency to prioritise regulatory eligibility and price. While ratings can distinguish project risks that broad compliance rules may overlook, they cannot capture governments’ wider Article 6, development and diplomatic priorities. The shared conclusion is that regulators should use ratings and their underlying research as complementary inputs, embed core quality drivers into eligibility rules, strengthen oversight and transparency, and preserve public authority over final decisions.
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