Projects restore the conditions that support tidal wetlands and seagrass ecosystems. The method measures emission reductions and CO2 removals, mainly through changes in vegetation and soil carbon.
Buffer pool: the methodology sets rules for it (VM0033 v2.0 calculation of VCUs, p. 64). CarbonMeld reads it in the project's documents. At the listing stage (under development), Verra asks a draft project description without its non-permanence risk section (Verra, «Registration and Issuance Process» v4.6, 16 Oct 2024, §3.1.3, p7). CarbonMeld then adds no buffer flag. CM-F-VM0033-BUFFER
A confirmed investment analysis A-INVEST
The documents show a project-level additionality test, the validation confirmed it, and it is an investment analysis (a numeric test of the project's finances with and without carbon revenue).
Where carbon is stored: the permanence start P-START
CarbonMeld scores permanence only for projects that store carbon. Forest projects start from CCQI's grade of the programme on criterion 3.2. CCQI grades this criterion by programme, so its grade applies to every methodology of the programme. Where CCQI does not grade the programme, permanence starts at the neutral 5.0: the CDM's grade does not stand in for another programme's approach to permanence. Direct air capture with storage, biogenic emissions capture with storage, other geological storage and biochar start at the top, 8.0. The EU classes these types as permanent carbon removals. Enhanced weathering also starts at 8.0. It shares a family with direct air capture. This start is our own judgement. Concrete carbonation, ocean alkalinity, buried biomass and long-lived materials start at the neutral 5.0. These types have no class in a public source.
Forests: CCQI's grade of the programme.
No legal requirement for the activity: the methodology sets rules for it. Our current method does not assess it. CM-F-VM0033-REGULATORY-SURPLUS
Social safeguards and consent of communities (FPIC): any such rules come from the programme, not the methodology. Our current method does not assess it. CM-F-VM0033-SAFEGUARDS-FPIC
The criterion does not apply to this methodology. Our current method never counts it as a gap.
The general rules apply as well. Read the general rules.
The rules of methodology v2.2, as they were: the archived v2.2 page.
v2.1active from 4 Sept 2023currentsource
Version 2.1 includes the following clarifications: Clarification that the latest version of the VCS AFOLU Non-Permanence Risk Tool (PDF) must be used to assess the risk of erosion and submergence of carbon stocks due to sea level rise. …
v2.0active from 30 Sept 2021 – 4 Sept 2023source
Updates were made to incorporate changes to VM0007 REDD Methodology Framework, v1.6 , which includes: Updated procedures that expand the eligibility of tidal wetland conservation and restoration. Reassessment of standardized methods for …
v1.0active from 20 Nov 2015 – 30 Sept 2021source
New methodology (initial version)
Browse 47 published projects using VM0033, listed alphabetically. There is no ranking for this methodology yet: it appears here automatically once 5 of its projects not in the pipeline or under validation are rated. Open a project to view its registry details and the analysis available for that project.
In CarbonMeld's data, VM0033 projects are on one registry: Verra (47 projects, 5 registered).
| Registry | Projects | Registered | Projects list |
|---|---|---|---|
| Verra (VCS) | 47 | 5 | See the list |
Counts of project records in CarbonMeld's data, with or without a CarbonMeld analysis. «Registered» counts the records whose current registry status is «registered», as last read (15 November 2026); projects in a later status, such as awaiting verification approval, late to verify or completed, are not in that column.
One of these projects has no number: additionality, quantification or both have no public grade of its type of project that applies to it yet. Its page shows the analysis.
