Core Concept
Carbon Dioxide Removal (CDR): Where It Fits, What Counts, and How QET-CCS Substantiates the Claim
Carbon Dioxide Removal sits at the end of a credible net-zero plan — not at the beginning, not in the middle, and not as a substitute for abatement. This page explains what Carbon Dioxide Removal is, why removals and avoidance are accounted differently, what durability actually means, and how Greentruth’s QET-CCS substantiates a specific durable-CDR claim.
CDR, in one paragraph. Carbon Dioxide Removal is the family of approaches that physically remove CO₂ from the atmosphere and store it — geologically, in soils and biomass, or in long-lived materials. In a credible net-zero stack, CDR is reserved for the small residual share of emissions that remains after deep value-chain abatement. Greentruth’s QET-CCS is a CCS Energy Attribute Certificate verified to ISO 14064-3 reasonable assurance and retired on the EarnDLT registry to anchor a specific durable-CDR claim. QET-CCS is not a carbon credit, not an offset, and does not transfer Scope 1 emissions between parties.
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See QET-CCS in a Sample CDR Plan
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What Is Carbon Dioxide Removal?
Carbon Dioxide Removal is the umbrella term for approaches that take CO₂ out of the atmosphere and store it for a defined period. The category covers a wide range of methods — direct air capture and storage, bioenergy with carbon capture and storage, enhanced rock weathering, mineralization, ocean alkalinity enhancement, soil carbon sequestration, afforestation and reforestation, and durable biomass storage among them — with very different cost curves, scaling profiles, and (most importantly) durability windows.
Two things unite the methods that count as Carbon Dioxide Removal:
- A measurable, additional draw-down of CO₂ from the atmosphere.
- A defined, monitored storage outcome that can be characterized as durable or short-lived.
What CDR is not: it is not the same as emissions avoidance, and it is not a substitute for reducing emissions at source. A credible net-zero plan treats abatement and removals as separate accounting layers with different rules.
Removals vs Avoidance: Why the Distinction Matters
Removals and avoidance are often grouped together in voluntary carbon markets, but they are not the same instrument and modern net-zero frameworks treat them differently.
| Concept | What it is | Where it counts | Typical example |
|---|---|---|---|
| Avoidance | Preventing an emission that would otherwise have occurred | Voluntary market accounting; not eligible for residual neutralization under most credible net-zero frameworks | Renewable energy displacement of fossil generation; avoided deforestation |
| Removal | Drawing CO₂ out of the atmosphere and storing it | Eligible for residual neutralization in a credible long-term net-zero claim, subject to durability and integrity requirements | Direct air capture with geological storage; durable biomass storage |
For corporate reporters, the practical implication is that an avoidance instrument cannot substitute for a removal at the neutralization layer of a long-term net-zero claim. The two sit on different rungs of the credibility ladder.
How fuel substitution (an abatement instrument) is treated separately
Durability: Short-Lived vs Durable Carbon Dioxide Removal
Durability is the second axis that separates a credible Carbon Dioxide Removal instrument from a less credible one. The question is simple: for how long is the removed CO₂ kept out of the atmosphere?
- Durable Carbon Dioxide Removal. Storage characterized to last centuries to millennia. Geological storage of CO₂ from direct air capture, mineralization, and certain other engineered approaches typically sit here. The durability profile is the reason most credible net-zero frameworks privilege durable CDR for the residual neutralization layer.
- Short-lived CDR. Storage characterized in decades — soil carbon sequestration, forest carbon, and some biomass-based approaches. Useful in a broader climate strategy, less commonly accepted at the residual neutralization layer of a long-term net-zero claim.
Greentruth’s QET-CCS is positioned in the durable CDR lane: it carries the storage-permanence attribute, the monitoring obligations, and any reversal-risk treatment that the underlying methodology contemplates, alongside the project provenance and verifier-of-record record an auditor needs.
Carbon Dioxide Removal’s Place in a Net-Zero Stack: Neutralization at Residuals
A credible long-term net-zero claim is built as a sequence:
- Abatement first. Reduce Scope 1, Scope 2, and Scope 3 emissions across the value chain. Under the most widely-used framework (the SBTi Corporate Net-Zero Standard), this means at least a 90% reduction by the target year.
- Neutralization at residuals. The remaining residual share (≤10%) is neutralized with durable Carbon Dioxide Removal.
The architecture matters: removals are the residuals instrument. They are not a substitute for the deep value-chain reductions the framework requires, and they are not a substitute for verified fuel- or electricity-attribute improvements either.
Across Greentruth’s QET family, three tokens feed the abatement layer and one feeds the neutralization layer:
Carbon Dioxide Removal’s Place in a Net-Zero Stack: Neutralization at Residuals
| Token | Layer in the stack |
|---|---|
| QET-NG | Abatement (Scope 1 CI; Scope 3 Category 3) |
| QET-RNG | Abatement (fossil fuel substitution) |
| QET-ELEC | Abatement (market-based Scope 2) |
| QET-CCS | Neutralization (durable CDR for residuals) |
How QET-CCS Substantiates a Carbon Dioxide Removal Claim
A QET-CCS is Greentruth’s CCS Energy Attribute Certificate — a tokenized record of verified, project-specific carbon capture and storage attributes. In the Carbon Dioxide Removal conversation, it is the registry-grade instrument that anchors a specific durable-CDR claim against the buyer’s residual emissions.
Five things the token carries are most relevant for a Carbon Dioxide Removal claim:
- Project provenance. The specific CCS project, operator, and geological storage formation, anchored on-chain.
- Capture source and pathway. Where the captured CO₂ came from (industrial source, direct air capture, or other) and the chain of custody through transport to injection.
- Storage permanence. The durability classification the project carries under the underlying standard, including monitoring obligations and any reversal-risk treatment.
- Verifier of record. The accredited third-party that signed off on the underlying data under ISO 14064-3 reasonable assurance.
- Retirement record. A single, irrevocable, on-chain retirement that anchors the CDR claim to a specific reporting period and entity — no possibility of double issuance or double claiming.
The token is designed so its attribute structure is portable into public CCS Energy Attribute Certificate frameworks emerging in the market — purely as illustrative reference points, not as partnership or affiliation claims. The underlying methodology is the authoritative reference for project-level technical specifics.
What QET-CCS Is NOT in the Carbon Dioxide Removal Conversation
A QET-CCS is not a carbon credit, not an offset, and does not transfer Scope 1 emissions between parties. It is a CCS Energy Attribute Certificate. It substantiates verified, project-specific capture and storage attributes for a specific durable-CDR claim, retired on-chain against the retiring company’s own inventory. A buyer that retires QET-CCS sharpens the credibility of its residual neutralization record on its own books — it does not net Scope 1 emissions across the value chain by some other route.
Three corollaries:
- Neutralization is not abatement. QET-CCS does not, and is not designed to, substitute for the deep value-chain reductions a credible long-term net-zero claim requires. Abatement comes first.
- A CDR claim is not a voluntary carbon credit claim. The voluntary carbon credit literature governs offsets and credits; QET-CCS substantiates a fuel- or attribute-style record of a specific physical CDR outcome, not an offset.
- Durability is a property of the project, not of the certificate. The certificate records the project’s durability classification; it does not create durability where the project does not provide it.
Frequently Asked Questions
Carbon Dioxide Removal is the family of approaches that physically remove CO₂ from the atmosphere and store it — geologically, in soils and biomass, or in long-lived materials — for a defined durability window.
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Walk Through a Complete CDR-Ready Net-Zero Stack
Request a demo and we’ll walk through QET-CCS as the residual neutralization layer alongside QET-NG, QET-RNG, and QET-ELEC on the abatement side — storage-permanence record, verifier-of-record attestation, and framework-portable retirement export.