Carbon project due diligence is the process of testing whether a project, credit and commercial promise can withstand scrutiny before a buyer commits capital or makes a climate claim. A registry listing is an important starting point, but it does not answer every question about technical quality, legal rights, delivery risk or buyer use.
1. Technical integrity
Technical review starts with methodology fit. The project should fall clearly within the methodology's applicability conditions, use a defensible baseline and demonstrate that the activity is additional. Monitoring parameters should be measurable in practice, not only elegant on paper.
Buyers should test the most sensitive assumptions, including leakage, uncertainty, permanence, grid factors, yield expectations and scale-up rates. For early-stage projects, the project design document and validation findings are often more informative than a headline forecast.
2. Legal rights and authorisations
The seller must have an enforceable right to the environmental attribute. In land projects, that requires a clear view of land tenure, carbon rights, participant agreements and benefit sharing. In technology projects, it can depend on equipment ownership, operating contracts, data rights and the allocation of environmental claims.
Article 6 projects add host-country approval and corresponding adjustment requirements. Corporate insetting requires a chain of custody that links the reduction to the buyer's value chain and prevents competing claims.
3. Financial and delivery risk
A high-quality methodology cannot compensate for an activity that cannot be built or operated. Due diligence should assess capital needs, construction status, feedstock or participant supply, operating capability, insurance, key counterparties and sensitivity to carbon prices.
Forward purchases need milestone-based delivery terms, remedies for under-delivery and clarity on what happens if validation, authorisation or issuance is delayed. Forecast volumes should be presented as scenarios rather than guarantees.
4. Integrity, safeguards and claims
Buyers should examine stakeholder engagement, grievance mechanisms, environmental and social safeguards, benefit sharing and the evidence behind co-benefit claims. External ratings and CCP labels are useful inputs, but they should complement rather than replace project analysis.
The final step is use-case fit. A credit can be technically sound and still be unsuitable for a specific corporate claim, compliance obligation or reporting standard. Vintage, geography, methodology, authorisation status and retirement wording all matter.
Due diligence continues after purchase
For multi-year offtakes, project review should continue through validation, monitoring, verification and issuance. Methodologies change, ratings move and operational performance can diverge from forecasts.
Sentinel Earth's buyer work combines project-level analysis with sourcing and contracting. Explore our corporate carbon credit services or review the projects currently available for discussion.
