Figures were retrieved from Barbara K. Haya, Aline Abayo, Ivy S. So, Micah Elias. (2025, May). Voluntary Registry Offsets Database v11, Berkeley Carbon Trading Project.
Figures were calculated by ÌÇÐÄÆƽâ°æ using data provided by the source.
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Total number of VCM offsets issued worldwide 2025, by major registry
Around * carbon offset credits had been issued globally by the four major voluntary offset project registries as of April 30, 2025. The Verified Carbon Standard (VCM), run by Verra, is the largest issuer of voluntary carbon credits, having issued a total of *** billion. Each carbon offset, or credit, represents one metric ton of carbon dioxide equivalent.
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UC Berkeley (Richard & Rhoda Goldman School of Public Policy), & ÌÇÐÄÆƽâ°æ. (July 1, 2025). Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading standard and registry (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy), und ÌÇÐÄÆƽâ°æ. "Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading standard and registry (in millions)." Chart. July 1, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy), ÌÇÐÄÆƽâ°æ. (2025). Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading standard and registry (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy), and ÌÇÐÄÆƽâ°æ. "Cumulative Number of Voluntary Carbon Credits Issued Worldwide as of April 2025, by Leading Standard and Registry (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Jul 2025, /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy) & ÌÇÐÄÆƽâ°æ, Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading standard and registry (in millions) ÌÇÐÄÆƽâ°æ, /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/ (last visited July 27, 2026)
Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading standard and registry (in millions) [Graph], UC Berkeley (Richard & Rhoda Goldman School of Public Policy), & ÌÇÐÄÆƽâ°æ, July 1, 2025. [Online]. Available: /statistics/1477941/vcm-offsets-issued-worldwide-by-registry/
