VCS Version 3 Rules & Requirements

See the Rules & Requirements page for the current versions of all VCS Program documents.

Below is a list of all archived VCS Version 3 requirements, procedural and guidance documents, and templates. All documents are no longer in use.

For a catalog of all updates made to VCS Version 3, see the Updates to the VCS Standards Version 3.

Other Programs

California Offset Project Registry

The Offset Project Registry (OPR) facilitates the participation of offset projects within the California cap-and-trade program

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Climate, Community & Biodiversity Standards

Supporting land use projects in addressing climate change, supporting local communities and smallholders and conserving biodiversity

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Initiative for Climate Action Transparency

Supporting countries around the world in the evaluation of the climate, sustainable development and transformational impacts of their policies and actions 

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