Quantification
How the gross removal is measured or modelled, and which deductions are applied.
Carbon dioxide removal
Build a removal portfolio around durability, evidence and delivery.
We develop and commercialise biochar, soil carbon and agroforestry removals, with direct access to the underlying projects and their monitoring systems.
Removal quality
A tonne removed is defined by more than the quantity.
Storage duration, reversal risk, measurement uncertainty, leakage, feedstock and land-use eligibility, and delivery stage all affect how a removal fits a corporate portfolio.
Durability
Where carbon is stored, for how long, and how reversal risk is managed.
Additionality
Why carbon finance is necessary for the activity, scale or continuation of the intervention.
Lifecycle boundary
Project emissions, leakage and processing impacts accounted for in the net result.
Safeguards
Land rights, feedstock sourcing, local impacts and stakeholder participation.
Delivery
Current stage, issuance pathway, forward risk and contractual remedies.
Our removal pathways
Engineered durability and landscape transformation.
Biochar
Stabilise biogenic carbon through pyrolysis.
Organic residues are converted into a durable material, with batch-level process data and controlled eligible end use.
Dark EarthSoil carbon
Change agricultural management at field scale.
Primary farm data, soil sampling and process-based models quantify changes in carbon stocks and agricultural emissions.
Seeds of RecoveryAgroforestry
Restore tree cover inside productive landscapes.
Plot-level monitoring links biomass and land-management removals to farms, commodities and long-term stewardship.
Cocoa Native AgroforestryRemoval portfolio
Projects available for buyer engagement.
Commercial status differs by project. Forward agreements can support scale, while issued supply provides shorter delivery exposure.
Biochar carbon removal | Singapore
Dark Earth
From city waste to city greenery.
90,000+ tCO2eproject impact goal
Explore the project
Regenerative agriculture | Ukraine
Seeds of Recovery
Recovery, from the ground up.
2,000,000+ tCO2eproject impact goal
Explore the project
Amazon agroforestry insetting | Brazil
Cocoa Native Agroforestry
From degraded land to agroforestry.
~160,000 tCO2epilot impact goal
Explore the project
Forward removals
Finance growth while managing delivery risk.
Forward contracts can unlock project capacity and long-term access, but they should be structured around real milestones.
Stage-based diligence
Assess feasibility, validation, construction, verification and issuance risks separately.
Defined delivery window
Set vintages, quantities, make-good provisions and remedies for delay or under-delivery.
Finance linked to project needs
Connect prepayment or price support to the project activities and milestones required for scale.
Ongoing information rights
Receive milestone, monitoring and verification updates throughout the contract period.
Removal FAQ
Questions corporate buyers should ask.
Which carbon removal pathways does Sentinel Earth develop?
Our public portfolio includes urban biochar, regenerative agriculture and native-species agroforestry. Each pathway has different measurement methods, storage durations and risk controls.
What makes a removal durable?
Durability describes how long carbon is expected to remain stored and how reversal risk is controlled. Biochar and land-sector storage have different time horizons, monitoring obligations and uncertainty profiles.
What are the risks of buying removals forward?
Forward purchases carry project and delivery risk because the units have not yet been issued. Strong agreements use milestone-based diligence, delivery windows, reporting rights and remedies, with future volumes treated as forecasts rather than guarantees.
How are soil carbon removals measured?
Credible programmes combine farm activity data, direct soil sampling, appropriate models, uncertainty deductions and repeated monitoring. The exact design depends on the methodology, geography and project scale.
Can removals be used for net-zero claims?
That depends on the organisation's target framework, progress on emissions reductions, the characteristics of the removal and the claim being made. Removal procurement and public claims should therefore be assessed separately against the applicable framework.