Engineered CDR
Engineered Carbon Dioxide Removal (CDR) encompasses a range of technology-based approaches that directly capture CO₂ from the atmosphere and store it durably — including Direct Air Capture (DAC), enhanced weathering (EW) of minerals, or ocean alkalinity enhancement (OAE). Biochar is also often counted as a part of this bucket, but listed in a separate Notebook. Engineered CDR projects are distinguished from nature-based approaches by a greater degree of reliance on processes of more industrial nature and the typically higher permanence and measurability of the carbon stored.
Overview of approved methodologies
| Standard | Methodology name | Version(s) |
|---|---|---|
Gold Standard  | GS Carbon Sequestration Through Accelerated Carbonation Of Concrete Aggregate | v 1.0 |
Isometric  | Bio-oil Geological Storage | v 1.0-1.1 |
Isometric | Biogenic Carbon Capture and Storage | v 1.1 |
Isometric | Biomass Geological Storage | v 1.0-1.1 |
Isometric | Direct Air Capture | v 1.1 |
Isometric | Subsurface Biomass Carbon Removal and Storage | v 1.0 |