Carbon Model stores the version of the applicable document at the project and calculation-period level. Below is the baseline map; the exact set of requirements is determined by the methodology, program, and jurisdiction.
Requirements and guidance for quantification, monitoring, and reporting of projects aimed at reducing greenhouse gas emissions or increasing removals.
Requirements and guidance for validation and verification of greenhouse gas statements. The edition was confirmed by ISO in 2024.
A policy-neutral framework for quantifying the benefits of climate change mitigation projects. The 2005 version remains in effect until the jointly updated ISO–GHG Protocol standard is published.
The current VCS version strengthens requirements for safeguards, stakeholder engagement, baselines, additionality, and digital processes. For most new projects, Version 5 requirements become mandatory from January 1, 2027.
Rules for designing, quantifying, and certifying climate impacts with environmental and social safeguards and alignment with the SDGs.
Article 6.2 governs the accounting of internationally transferred mitigation outcomes, Article 6.4 establishes a UN carbon crediting mechanism, and Article 6.8 covers non-market approaches.
Ten quality principles: governance, tracking, transparency, independent validation and verification, additionality, permanence, robust quantification, no double counting, sustainable development, and contribution to the transition to net zero.
For each project, the platform records the program, methodology, document edition, applicability date, and mandatory templates. When the rules are updated, the existing calculation is not overwritten: a new version is created with a change log.