CAIRN scores five dimensions per project, each rated 1 to 5 from public data. The five scores are combined into a weighted composite and converted to a letter grade.
The weighting reflects two priorities: credibility of the carbon claim (methodology and additionality together represent 50% of the score) and capital risk (financial viability and sovereign risk together represent 40%). Community architecture accounts for the remaining 10% - weighted lower not because it matters less, but because the public data is thinner and the scoring is therefore less precise at this stage.
The methodology is the scientific and procedural framework that governs how a project measures, reports, and verifies its carbon impact. Not all methodologies are equal. Older REDD+ methodologies have weaker baselines and additionality tests. Newer methodologies - particularly VM0047 for afforestation, reforestation, and revegetation - have been built to a higher standard and have earned ICVCM Core Carbon Principles approval, the market's most rigorous independent quality certification.
The score reflects both the methodology itself and whether it has received CCP approval from the Integrity Council for the Voluntary Carbon Market.
| Score | Criteria |
|---|---|
| 5 | VM0047 (ARR) with ICVCM Core Carbon Principles approval confirmed in certification |
| 4 | VM0047 (ARR) without explicit CCP confirmation, or VM0033 (Blue Carbon), or VM0032 (Savanna burning) |
| 3 | Gold Standard methodology, or VM0012 (Improved Forest Management) |
| 2 | Older REDD+ methodologies: VM0007, VM0009, VM0015 |
| 1 | Unrecognised or undisclosed methodology |
Additionality is the central credibility question in carbon markets: would the emissions reduction or carbon removal have happened without the carbon finance? A project that would have proceeded regardless - because the land was protected by law, or the economics worked without carbon revenue - is not additional, and its credits represent no real-world benefit.
Rigorous additionality assessment requires reading a project's Project Design Document in full - a manual task that cannot be automated at scale. CAIRN instead uses a proxy approach based on two data points that are strongly correlated with additionality quality: the strength of the methodology (which sets the additionality test) and third-party validation status (which confirms the test has been applied and passed).
This is a considered methodological choice, not a limitation. The methodology score already captures the stringency of the additionality test. Validation status confirms the test was applied by an independent third party. Together, these two signals are a sound proxy for additionality quality at the level of granularity that public data supports.
For scoring purposes, a project is considered validated if its status is Issuing, Registered, or Issuance confirmed. Under Validation and In Development are pre-validation stages.
| Score | Criteria |
|---|---|
| 5 | Validated + CCP-approved methodology (methodology score 5) |
| 4 | Validated + strong methodology (methodology score 4) |
| 3 | Validated + established methodology (methodology score 3), or not yet validated + strong methodology (score 4-5) |
| 2 | Not yet validated + established methodology, or validated + older methodology |
| 1 | Not validated + older methodology |
A project that will never issue credits, or that faces structural barriers to generating revenue, is not a viable investment regardless of its ecological credentials. Financial viability is scored from project status and the presence of an Article 6.2 compliance pathway - the most valuable revenue channel currently available to African conservation projects, given the compliance premium over voluntary credits.
| Score | Criteria |
|---|---|
| 5 | Issuing credits with a confirmed Article 6.2 / ITMO pathway |
| 4 | Issuing credits, voluntary market |
| 3 | Registered or issuance confirmed - not yet issuing |
| 2 | Under validation - methodology registered, credits not yet issued |
| 1 | In development - earliest stage |
Conservation finance projects operate within sovereign environments that affect their durability, enforceability, and counterparty risk. A project in a politically stable, well-governed country with a functioning legal system is materially lower risk than the same project in a fragile state - regardless of its carbon methodology.
The CAIRN sovereign risk score combines two distinct risk types that together determine the full sovereign exposure of a conservation finance investment.
Governance risk (50% of sovereign score) - the risk that a country's political environment, rule of law, or institutional stability undermines the project. Scored from the World Bank Governance Indicators composite: political stability and absence of violence, rule of law, control of corruption, and government effectiveness. These four indicators are most directly relevant to conservation finance - they capture whether a government can be held to its commitments, whether land rights can be enforced, and whether regulatory frameworks are stable.
Default risk (50% of sovereign score) - the risk that a sovereign counterparty defaults on financial obligations, directly relevant to debt-for-nature swaps, sovereign-backed instruments, and any structure where the government is a financial counterparty. Scored from the most recently published sovereign credit rating from Moody's, S&P, or Fitch. Where multiple agencies rate the same country, the most recently updated rating takes precedence.
Where no agency credit rating exists - which applies to the majority of African nations, particularly smaller economies and fragile states - the sovereign score falls back to 100% governance risk (WGI only). This is the more conservative approach: unrated sovereigns carry unquantified default risk, and WGI alone captures the governance dimension without implying a false precision on credit.
WGI scoring
| Score | WGI position | Representative countries |
|---|---|---|
| 5 | Top quartile | Botswana, Mauritius, Namibia, Rwanda, Seychelles, Cape Verde |
| 4 | Second quartile | South Africa, Morocco, Ghana, Senegal, Tanzania, Benin |
| 3 | Third quartile | Kenya, Nigeria, Ivory Coast, Cameroon, Uganda, Ethiopia |
| 2 | Bottom quartile | DRC, Sudan, Mali, Burkina Faso, Guinea, Niger |
| 1 | Bottom quartile, conflict-affected | Somalia, South Sudan, Eritrea |
Credit rating scoring
| Score | Rating range | Signal |
|---|---|---|
| 5 | BBB- and above | Investment grade |
| 4 | BB+ to BB- | Sub-investment grade, lower risk |
| 3 | B+ to B- | Speculative, moderate risk |
| 2 | CCC and below | High default risk or in restructuring |
| 1 | No rating | Falls back to 100% WGI |
How a project is structured in relation to the communities whose land it sits on is a material factor in project durability. Projects with weak community architecture - where communities are passive recipients rather than active participants - face higher risk of consent withdrawal, land disputes, and regulatory challenge. This is increasingly true as host country governments scrutinise community benefit-sharing more closely under Article 6.2 frameworks.
The best available proxy from public data is CCB certification - the Climate, Community and Biodiversity standard independently assesses community governance, benefit-sharing, and land tenure. CCB Gold is the highest tier and requires the most rigorous demonstration of community co-ownership. Gold Standard methodology also incorporates community standards, though with less granularity than CCB.
Community architecture is weighted at 10% - lower than its real-world importance - because public data coverage is thinner here than on the other four dimensions. A CMS layer allowing manual enrichment of community structure data is planned, at which point the weighting will be reviewed.
| Score | Criteria |
|---|---|
| 5 | CCB Gold certified |
| 4 | CCB standard certified |
| 3 | Gold Standard certification (incorporates community standards) |
| 2 | VCS only, or CCP approved without CCB - no independent community assessment |
| 1 | No recognised community certification or standard |
The five dimension scores are multiplied by their respective weights and summed to produce a composite between 1 and 5. The composite maps to a letter grade as follows.
| Composite score | Grade | What it means |
|---|---|---|
| 4.50 - 5.00 | A+ | Strongest available profile across all five dimensions. CCP-approved methodology, validated, issuing or on a compliance pathway, top-quartile sovereign environment, CCB Gold. |
| 4.00 - 4.49 | A | High-quality project. Strong on most dimensions. Minor gaps - typically sovereign environment or community certification. |
| 3.50 - 3.99 | B+ | Solid project. Established methodology, validated or near-validation, reasonable sovereign context. |
| 3.00 - 3.49 | B | Acceptable project with identifiable gaps - typically older methodology, pre-validation stage, or weaker sovereign environment. |
| 2.50 - 2.99 | C+ | Below average. Multiple dimensions score weakly. Carries meaningful risk that should be understood before capital deployment. |
| 2.00 - 2.49 | C | Weak profile. Older methodology, pre-validation, difficult sovereign context, or limited community structure. High risk. |
| Below 2.00 | D | The data available presents a poor profile across most or all dimensions. Not a signal to avoid - but a signal to understand the project in depth before proceeding. |
All inputs are from public sources updated on a regular cycle. No proprietary data is used. No manual editorial inputs are applied at this stage.
CAIRN is a data-derived rating, not a due diligence replacement. It scores what public registry data supports. It does not assess management quality, community relationships on the ground, developer track record, or buyer offtake terms - all of which matter to actual investment decisions.
Three known limitations in the current version:
Additionality proxy. The current approach proxies additionality from methodology and validation status. A full additionality assessment requires reading the Project Design Document. A future CMS layer will allow manual additionality assessments to override the proxy score where Canopy has done the work.
Community architecture data. CCB certification is a strong signal but covers only a subset of projects. Many projects with genuine community co-ownership structures are not CCB-certified. Manual enrichment will improve this dimension as data is gathered.
Sovereign credit gaps. The majority of African countries are unrated by the major agencies. The WGI-only fallback is robust, but the 50/50 composite for rated countries is more precise. Coverage will improve as more countries access international debt markets.
CAIRN scores are updated when source data changes - on registry updates, new WGI releases, or rating agency actions. The scoring date is displayed on each project record.
CAIRN scores are informational only. They are not financial advice, investment recommendations, or a solicitation to buy or sell any financial instrument. Canopy makes no warranty as to the accuracy or completeness of the underlying data. All investment decisions should be made on the basis of independent due diligence.