Who Should Get Scarce Carbon Dioxide Removal (CDR) — and How to Allocate It Without Derailing Net Zero

Why high-quality CDR is scarce and why that scarcity matters more than price

Physical scarcity is the real constraint in carbon dioxide removal, not just cost per tonne. The State of CDR synthesis puts total global removals at roughly 2.1 GtCO₂ per year, but most of that is conventional land-based removal, while novel CDR sits at only a few MtCO₂ per year. That gap is not a rounding error. It is the core market reality.

High-quality supply is narrower than “credits available in a registry.” Durable storage, reversal risk, additionality, leakage, MRV quality, and delivery capacity decide what is actually usable for net zero neutralization. IPCC’s framing is helpful here: CDR is removal and storage in reservoirs such as geological, terrestrial, oceanic, or products. If storage is weak or uncertain, you may have a claimable unit, but you do not have the same climate function.

Need is rising faster than verifiable delivery. IPCC AR6 WGIII shows 1.5°C-consistent pathways relying on multi‑GtCO₂ per year of CDR by mid-century across options including AFOLU and BECCS, and the IEA NZE pathway indicates around 1.9 GtCO₂ removed in 2050 via BECCS plus DACCS. Even if you debate exact pathway choices, the direction is consistent: residual balancing demand scales to gigatonnes, while durable supply starts from megatonnes.

Long-term corporate buyers feel this scarcity first through execution risk. A company targeting net zero in the 2040–2050 window that signs multi-year offtakes today runs into limited project pipelines, permitting timelines, and supply-chain constraints like energy requirements, sorbents, and sustainable biomass feedstock. Delivery risk becomes a procurement variable, not a footnote.

Allocation becomes unavoidable once you accept scarcity. If high-quality CDR is a limited resource, the key question shifts from “what price clears the market?” to “where does the climate system get the most value per tonne?” That forces a practical hierarchy: hard-to-abate residuals first, easy-to-abate last.

Hard-to-abate vs easy-to-abate emissions: defining where CDR should be used first

Hard-to-abate residual emissions are the ones that remain after credible best-effort abatement. They often come from process chemistry and physical constraints, not from slow decision-making. Typical examples include cement process emissions from calcination, parts of basic chemicals, long-haul aviation, shipping, some steel routes, and agricultural N₂O and CH₄ that are difficult to eliminate fully without disrupting production systems.

Easy-to-abate emissions are the opposite: they have mature alternatives that are generally available. Electricity decarbonisation, many forms of industrial heat, and light-duty fleets often have clear pathways through efficiency, electrification, and clean power procurement. Using scarce CDR here is usually a choice, not a necessity.

A mitigation hierarchy makes this operational. The updated Oxford Offsetting Principles (2024) reinforce the direction of travel: reduce emissions first, use high-integrity contributions during the transition if you choose to, and move to removals to neutralize residual emissions by the net zero target date. This is not about being “anti-credit.” It is about sequencing and matching the tool to the job.

Buyers can turn “last resort” into a testable standard. A simple abatement feasibility test combines an internal marginal abatement cost curve with technical constraints and deployment timelines. A cement producer can document that even with fuel switching and efficiency, a portion of emissions remains tied to clinker chemistry. A data center operator generally cannot justify CDR as a substitute for renewable electricity procurement and efficiency improvements.

CDR type-fit matters as much as the decision to use CDR at all. Durable CDR options such as DACCS, bioCCS, mineralisation, and biochar with robust permanence provisions align better with hard-to-abate residual neutralization. Non-durable land-based removals can still play a role, but they fit better as high-integrity BVCM during the transition or for nature outcomes, with claims that reflect reversal risk and the need for buffers.

Priority rules still leave a hard question unanswered. Even if everyone agrees on “hard-to-abate first,” scarcity means not every hard-to-abate actor can buy what they want. That is where equity-based allocation becomes more than a policy debate. It becomes a market design problem.

Equity-based allocation models: responsibility, capability, and fair access across countries and sectors

Responsibility-based allocation starts from historical emissions. The actors that contributed more to the stock of atmospheric CO₂ should bear more of the cost of removals, and arguably should contract more CDR to help scale supply. In practice, this can look like heavier internal carbon budgets, higher internal carbon prices, or explicit commitments to fund durable CDR beyond one’s own residuals.

Capability-based allocation starts from who can pay and who can build. Buyers with stronger balance sheets and better access to technology can de-risk early projects through long-dated offtakes, pre-purchases, or blended finance structures. The equity logic is that early capability should expand supply, not lock it up.

Needs-based allocation prioritises unavoidable residuals and limited alternatives. This points to reserving durable CDR capacity for sectors where residuals are structurally hard to remove, and where near-term substitutes are not credible at scale. It also suggests that some actors should not be competing for the same tonnes at all, because they have cheaper and faster abatement options.

These ideas translate into concrete B2B mechanisms. A buyer portfolio can include a CDR carve-out reserved for hard-to-abate residual neutralization, rather than letting business units compete for credits on a first-come basis. An internal CDR levy can charge easy-to-abate divisions for continued emissions and use the proceeds to fund durable offtakes that are allocated to residuals elsewhere in the organisation or sector. Sector-level advance market commitments and contracts for difference can de-risk supply while preventing a market where only the largest buyers get delivery.

Accounting frameworks are tightening, which raises the bar for any allocation model. The GHG Protocol Land Sector and Removals Standard increases expectations on how companies account for land-sector emissions and removals, including issues like leakage and more rigorous requirements than earlier drafts. If accounting becomes stricter, “paper access” to removals becomes less valuable than access to removals that survive scrutiny.

Pooling can make access fairer without breaking market incentives. A shipping consortium, for example, can pool procurement and allocate tonnes based on activity metrics and ability to pay, while using common MRV and contracting standards. Cross-border cooperative approaches can also matter where Article 6 authorizations and corresponding adjustments apply, because tradability and claims depend on how units are authorized and accounted for.

Allocation fails if misuse is tolerated. If companies can buy removals instead of decarbonising, or if claims are ambiguous, scarce CDR gets pulled into the wrong use cases. That undermines both climate outcomes and market legitimacy. Guardrails are not optional. They are the price of scarcity.

Guardrails to prevent CDR misuse: claims rules, targets hierarchy, and procurement standards

Claims need a clear stack that separates three things. Companies should distinguish value-chain reductions aligned with science-based targets, voluntary contributions beyond the value chain during the transition, and neutralization of residual emissions at the net zero target year. The SBTi Corporate Net-Zero Standard draft (v2.0 consultation) reinforces the principle that credits do not replace required emissions reductions, and it frames neutralization of residuals at the target year as the relevant role for removals.

Communication guardrails reduce the incentive to misuse CDR. VCMI’s Claims Code sets prerequisites around progress and conditions for making claims, including constraints that help prevent “offsetting your way out” of Scope 3 responsibilities. This matters in a scarce market because weak claims rules increase demand from easy-to-abate buyers, crowding out higher-need use cases.

Procurement guardrails should be written into RFPs and contracts, not left to marketing. Buyers should specify a durability threshold aligned to the claim being made, reversal provisions such as buffers or insurance, MRV protocols and auditability, additionality tests, leakage assessment, chain-of-custody controls, and registry safeguards against double counting. ICVCM’s Core Carbon Principles can function as a screening layer on crediting programs and methodologies, even though buyers still need project-level diligence.

A short do-not-do list prevents common failure modes. Companies should not use CDR to cover emissions that are readily abatable with mature measures. Companies should avoid “carbon neutral company/product” claims that blur reductions, contributions, and neutralization into one label. Companies should not sign offtakes that lack delivery milestones, remedies for under-delivery, and data access rights that make third-party assurance possible.

Good guardrails turn scarcity into a manageable portfolio problem. Once claims and procurement rules are clear, the next question becomes practical: how do buyers build a CDR portfolio and how do developers package MRV and delivery in a way that is financeable and credible?

What this means for carbon credit buyers and developers: portfolio strategy, contracting, and MRV expectations

Portfolio strategy should assume tightening supply, not abundant spot availability. Buyers generally need a mix: durable CDR reserved for future neutralization of residuals, plus high-integrity transition actions that fit BVCM without confusing them with neutralization. The key is a phase-in plan where the share of removals increases as the net zero target year approaches.

Vintage laddering is a simple way to manage delivery risk. Buyers can contract a ladder of expected deliveries across multiple future years, rather than betting on a single start date. This matches the reality that many durable CDR pathways scale through first-of-a-kind risk, permitting, and supply-chain buildout.

Market signals already point to more forward contracting. CDR.fyi’s market tracking and year-in-review commentary highlight rapid growth in durable CDR purchases and contracting activity. The practical implication is straightforward: more tonnes locked in via offtakes today usually means fewer high-quality tonnes available on a spot basis later, especially for durable categories.

Contract structure determines whether a “tonne” is actually bankable. Spot purchases can work for near-term delivery and low complexity, but they do not solve scale-up financing. Forward offtakes, pre-purchases, and take-or-pay structures can support project finance, but they shift risk onto buyers unless contracts are written carefully.

Key clauses are not negotiable in a scarce, high-scrutiny market. Buyers should include MRV gating conditions before payment milestones, permanence and reversal liability terms, remedies for under-delivery, conditions for registry issuance and transfer, change-in-law provisions that address potential compliance or Article 6 linkages, audit rights, and a data room with raw data access where feasible. Developers should expect these asks and prepare standard packages rather than treating each buyer as a bespoke diligence exercise.

MRV expectations are rising on both sides. Developers need monitoring plans, uncertainty quantification, QA/QC procedures, and readiness for independent assurance. Buyers should request an MRV package that includes the methodology, monitoring design, verification approach, anti-double-counting controls, and clear documentation of how storage is evidenced over time.

The next five years will reshape what “good” looks like. Portfolio and contracting decisions made in 2026–2030 will be influenced by how compliance frameworks, Article 6 infrastructure, and integrity benchmarks mature. A watchlist helps buyers and developers avoid building strategies on assumptions that will not hold.

Policy and market signals to watch in 2026–2030: compliance integration, Article 6 links, and integrity benchmarks

The Carbon Removals Certification Framework is a major signal for how removals may be certified in a compliance-adjacent way. The regulation has been adopted, but the operational impact depends on delegated acts and methodologies that make certification usable in practice. Timelines matter because certification readiness can affect financing, buyer acceptance, and how MRV is standardised.

Article 6 operational rules will influence international tradability and accounting. The UNFCCC work on Article 6.4 rules, procedures, and methodologies, including for removals, will shape how authorizations and corresponding adjustments are handled where they apply. For buyers, this can change what claims are possible. For developers, it can change what host-country approvals and documentation are needed.

Aviation demand can shift the balance between voluntary and compliance-linked markets. CORSIA’s phases and the availability of eligible units, along with authorization practices and integrity requirements, can pull supply toward compliance-linked demand. In a scarce durable CDR market, any new large demand center can create crowding-out effects, even if the unit types are not identical.

Public procurement and MRV standardisation programs are worth tracking as market-making signals. Government initiatives that fund pilots, purchases, or MRV development can reduce perceived technology risk and create reference-grade diligence norms that private buyers then adopt. Developers can use these signals in fundraising. Buyers can use them as benchmarks for what “good MRV” looks like.

Integrity benchmarks will increasingly act like access requirements. ICVCM CCP-aligned program quality screens and Oxford-style net zero aligned principles are moving from “nice to have” to conditions for enterprise procurement, investment committee approval, and reputational risk management. Scarcity accelerates this shift because buyers cannot afford to lock in long-dated contracts that later become non-credible.