Dive into the detail of our pillars and grades. Plus, if you’d like to see your own carbon removal project on our site, see how it measures up.
9 Carbon Char Grades
Empowering decision-making
Our Carbon Char Grades – AAA to C – make choosing a carbon removal simple. they allow you to confidently compare the quality of different technologies from different projects.
Our 6 scoring pillars
We’ve developed 6 scoring pillars in collaboration with leading scientists at Edinburgh University. It’s the total score of all 6 pillars that equals a Carbon Char Grade.
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Carbon Mass
The certainty of the mass of carbon removed from the atmosphere in kg.
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Record Keeping
The quality of reporting on the carbon removal project.
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Stability
The stability of the carbon once removed from the atmosphere.
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Permanence
The length of time that the carbon will remain locked away based on existing scientific evidence.
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Stewardship
The likelihood that the organisation in charge of the removal will look after it.
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Additionality + Novelty
The certainty that your purchase made the removal happen and that it wouldn’t have happened without it; combined with how innovative the technology is.