Isometric has certified Version 2.1 of the Isometric Standard. The update changes the default Public Comment Period for Project Design Documents (PPDs) during validation from 30 days to 10. The full 30-day window automatically applies whenever a material comment is raised or a stakeholder requests additional time to review the project.
Public Comment Periods
Before a project can be issued credits on the Isometric Registry, it must pass validation: the process that confirms a project's operations and methodology meet the requirements of the Isometric Standard and the relevant protocol. Validation involves several key stages of review:
- Eligibility check: Isometric reviews the project against the Standard's eligibility requirements before validation begins.
- PDD publication: The full PDD is published on the Isometric Registry, with sensitive information redacted.
- Public Comment Period: The carbon removal ecosystem, academics, and the general public are invited to comment on the project's approach and operations.
- Verifier review: An accredited independent Validation and Verification Body (VVB) conducts a full review of the PDD and a site visit at the project location, producing a Validation Report that is published on the Isometric Registry.
- Isometric review: Isometric reviews the VVB's Validation Report before the project is formally validated on the Registry.
A shorter default keeps projects moving through validation, with the full 30-day window applying whenever it's warranted: when a material comment is raised in the first 10 days, or a stakeholder requests additional time to review the project.
This takes up to 20 days off validation timelines while keeping the full comment period available wherever it's needed.
How Version 2.1 applies to projects
This depends on its current validation status:
- Projects that have not yet started validation adopt v2.1, with the 10-day default, automatically.
- Projects in validation but not yet at their Public Comment Period can adopt v2.1 voluntarily, in coordination with their Registry Operations Manager.
- Projects that have already begun or completed their Public Comment Period continue under their current version of the Standard, and adopt the latest version automatically when they renew their Crediting Period.
Read more about what changed in Version 2.0 of the Isometric Standard.
