Sylvera

Full explainer

Sylvera is a London-based carbon-credit ratings agency that produces independent third-party assessments of voluntary-market projects. Each project is scored on an A-D scale (with sub-grades A+, A-, etc.) across multiple dimensions: additionality, permanence, leakage, co-benefits, and overall integrity. The ratings combine satellite-derived monitoring data with financial and methodology analysis by domain experts.

Sylvera has rated a substantial portion of the Indonesian REDD+ portfolio. Sylvera's ratings frequently disagree with the underlying registry's verification, particularly for legacy VM0007 projects where Sylvera applies modern baseline-rigor expectations. KarbonLens's integrity-score methodology is methodologically distinct (it weights satellite reversal-risk and community-flags higher than Sylvera's framework) but consumes broadly similar satellite signals (GFW alerts).

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