About - Calyx Global

Our Purpose: Better Carbon Markets

Calyx Global is committed to ensuring that the growth of carbon markets leads to more impact – in the fight against climate change, in the quest to maintain a healthy planet and as a means to contribute to positive societal outcomes for individuals and communities around the world.

We believe that rigorous, independent, evidence-based insights and ratings for carbon credits can help ensure that the voluntary carbon market’s growth rewards credits that make the biggest difference. We want to work together in this pursuit with buyers, investors, traders and other market participants who care about integrity and impact.

Calyx Global Team & Partners

Together in Pursuit of Better Carbon Markets

The growing team at Calyx Global includes climate and environmental scientists, geospatial information specialists, forest ecologists, social scientists, MBAs, product managers, SaaS veterans, and more. We come together to nudge the voluntary carbon market in the right direction, one rating at a time.

Our team and network of partners are spread globally.

Andy Tzou

Head of Product

Annelise GIll-Wiehl

Cookstoves / Household & Community Expert

Carlos Velazquez

SDG & GHG Analyst

Chiara Canetti

GHG Analyst

Deborah Lawrence

Chief Scientist

Donna Lee

Co-Founder

Duncan van Bergen

Co-Founder

Floor Oosterlee

SDG & GHG Analyst

Ivy Aygeiwaa Amponsah

SDG & GHG Analyst

Linda Rivera Macedo

SDG Manager

Matteo Lattanzi

SDG & GHG Analyst

Rahmi Ariani

Nature expert

Ryan Carroll

Nature & GIS Expert

Ryan Cooper

SDG & GHG Analyst

Tao Jiang

Nature & GIS expert

Wesley Roberts

Nature & GIS Expert

Zihui Zhu

Nature & GIS Expert

Partners

We work with some of the world’s foremost experts in carbon crediting to develop our ratings and ratings approaches.

Independent Panels

Overseeing Calyx Ratings’ frameworks

Independent vetting of our ratings frameworks makes our work more robust – so you can have confidence in our ratings. Relying on many years of experience in carbon crediting and sustainability, the Calyx Global Independent Panels review and challenge our ratings frameworks.