"Tackling a Major Climate Threat, " joint research with Carbon Containment Lab on Superpollutants

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Trusted by the world's most ambitious climate leaders

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"Calyx Global's deep expertise in GHG integrity and safeguards gives us confidence in our nature-based solutions project evaluations. They help us identify quality opportunities and navigate risks from the very beginning of the development process."

Phillip Goodman
Director, Carbon Removal Portfolio
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We've got your back, because we've been there.

  • Decades of practical experience across 25+ project types

  • Guided by people, not black-box algorithms

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Collage of Co-Founder Donna Lee visiting a REDD project in Cambodia, Co-Founder Duncan Van Bergen at Ecosperity Week in Singapore, Chief Scientist Dr. Deborah Lawrence at New York Climate Week

Photos from left to right: Co-Founder Donna Lee visiting a REDD project in Cambodia, Co-Founder Duncan Van Bergen at Ecosperity Week in Singapore, Chief Scientist Dr. Deborah Lawrence at New York Climate Week

Leading coverage means more
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With the largest number of expert-led ratings from the broadest set of credit types, you'll have more opportunities to find high quality credits.

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"We value Calyx's rigorous, evidence-first approach to ratings and exceptional client service."

John-O Niles
Natural Climate Solutions Senior Manager
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"Of the rating agencies assessed, Calyx stands out as being more conservative, with a more reliable way of assessing carbon credit quality."

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"The ratings and reports of Calyx Global are a great supplement to our own due diligence process. We value the expertise that the Calyx Global team brings."

Jacob Bourgeois
Head of Operations Strategy and Innovation

Solutions to evaluate quality at any project stage

Pre-verification assessments

Pre-verification assessments

De-risk early investments with clear analysis and rating outlooks for early-stage projects.

Calyx Compass

Calyx Compass

A data-driven decision tool that helps you identify and overcome the most important quality risks - so you can make informed early-stage decisions, faster.

Calyx Ratings

Calyx Ratings

Find credits that deliver real impact. Our independent, science-backed ratings cut through complexity and spotlight the highest-integrity credits.

Expert advisory services

Expert advisory services

From custom analyses to any question you have about the market: Our experts stand ready to help you succeed.

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A trusted partner with deep expertise

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"We needed a trusted, non-conflicted advisor to help us navigate the volatile landscape of options. The deep expertise and objectivity of the Calyx team, as well as their ability to easily translate very technical insider baseball and nuance to general and executive audiences put us at ease that we could make wise decisions with confidence that followed our rigorous internal guidelines developed by diverse stakeholders."

Mick Dalrymple
Chief Sustainability Officer
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