| Criteria | Description |
|---|---|
| Durability | Stores carbon permanently (>1,000 years) |
| Physical footprint | Takes advantage of carbon sinks and sources that do not compete for arable land |
| Cost | Has a path to being affordable at scale (<$100 per ton) |
| Capacity | Has a path to being a meaningful part of the carbon removal solution portfolio (>0.5 gigatons per year) |
| Net negativity | Maximizes net removal of atmospheric carbon dioxide |
| Additionality | Results in net new carbon removed, rather than taking credit for removal that was already going to occur |
| Verifiability | Has a path to using scientifically rigorous and transparent methods for monitoring and verification |
| Safety and legality | Is working towards the highest standards of safety, compliance and local environmental outcomes; actively mitigates risks and negative environmental and other externalities on an ongoing basis |