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.
The categories chosen are those that have issued more than 40 million credits.
Release date set as date of site access.
Citation formats
Total number of VCM credits issued worldwide 2025, by leading project type
Around *** billion carbon offset credits had been issued globally by major voluntary offset project registries as of April 30, 2025. Of this total, *** million were issued by REDD+ projects, accounting for ** percent of cumulative issuances. Wind projects were the second-largest issuer as of April 2025, with total issuances of *** million.
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UC Berkeley (Richard & Rhoda Goldman School of Public Policy). (July 1, 2025). Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading project type (in millions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy). "Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading project type (in millions)." Chart. July 1, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy). (2025). Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading project type (in millions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy). "Cumulative Number of Voluntary Carbon Credits Issued Worldwide as of April 2025, by Leading Project Type (in Millions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Jul 2025, /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/
UC Berkeley (Richard & Rhoda Goldman School of Public Policy), Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading project type (in millions) ÌÇÐÄÆƽâ°æ, /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/ (last visited July 23, 2026)
Cumulative number of voluntary carbon credits issued worldwide as of April 2025, by leading project type (in millions) [Graph], UC Berkeley (Richard & Rhoda Goldman School of Public Policy), July 1, 2025. [Online]. Available: /statistics/1617860/vcm-offsets-issued-worldwide-by-select-project/
