Science-based certificates must represent the real CO2 removed from the atmosphere. Our verification process requires scientific measurement and quantification of the removed carbon in the product and carbon net-negativity in the production, from cradle-to-gate.
So far, we have identified three carbon removal methods that have significant volume potential and where costs are reasonable. CO2 Removal Certificates (CORCs) are issued for each metric ton of CO2 equivalent.
A very stable, solid form of carbon that can endure in soil for thousands of years, making it an ideal technology for scalable carbon removal.
It has multiple commercial uses at potentially industrial volumes, for example, as greenhouse additive, in soil regeneration and in wastewater treatment. It is produced from biomass or biowaste, through pyrolysis (heated in the absence of oxygen).
Manufactured concrete-like building elements from steel slag (waste material from steel industry) instead of traditional cement. Basically, it’s CO2 negative concrete that removes more CO2 than its production emits.
During the hardening phase CO2 is chemically bound and mineralised permanently into the building element. Benefits of the method include easy measurability and storage of CO2 for good.
Growing trees capture carbon but the carbon may go back to circulation if the trees are cut, decompose or are used for paper or energy. The earliest point in the value chain where the only economically viable option is to keep the CO2 away from circulation for the long-term is what we call ”the first point of no return principle.” In this case, carbon removal is considered long term when it’s stored in wooden building elements.
In Europe, buildings are regulated to have a minimum lifetime of 50 years, and in real life the CO2 storage is likely to be longer. By storing CO2 for a minimum of 50 years, wooden building elements present an opportunity for companies to invest in carbon capture and storage.