For most of the 2010s, carbon dioxide removal at scale was a research idea with a small voluntary market attached. The shift since 2022 has been structural: buyer coalitions pooling commitments worth hundreds of millions of dollars, locking in offtake from suppliers that hadn't yet built commercial facilities. That arrangement — advance market commitment for technology that doesn't yet exist at scale — is reshaping what the engineered removal industry looks like, both supply and demand sides.
The mechanism is borrowed from vaccine procurement. A coalition of buyers commits to purchase a defined volume of a future product at a defined price, conditional on the product meeting agreed specifications. Suppliers can then raise capital against contracted demand rather than speculative future demand. The financing model unlocks technology deployment that wouldn't survive a normal procurement timeline.
What's worth understanding is how the coalitions differ in structure, what they're actually buying, and which suppliers have successfully scaled into delivery.
The coalitions in summary
Four major coalitions dominate the engineered removal AMC space, each with a distinct profile.
Frontier, launched by Stripe, Alphabet, Meta, Shopify, and McKinsey in 2022, committed nearly $1 billion through 2030 to purchase permanent carbon removal. Frontier prioritizes durability (>1,000 year storage), uses an independent science panel for technical review, and publishes detailed purchase agreements. It has been the model that subsequent coalitions adapted.
NextGen CDR Facility is a partnership between South Pole and Mitsubishi Corporation, structured as a portfolio with broader buyer participation. NextGen targets a different segment of the durability spectrum — including approaches in the 100-1,000 year range — and has signed multi-million-ton offtake agreements across multiple technology pathways.
Symbiosis, formed by Google, Meta, Microsoft, and Salesforce in 2024, focuses specifically on nature-based pathways with rigorous integrity standards. The coalition uses a different evaluation framework than Frontier, reflecting that nature-based and engineered removals don't compare on identical criteria.
Bilateral mega-deals — Microsoft's standalone agreements with Stockholm Exergi (BECCS), Heirloom (mineralization), and others — account for additional volume not channeled through coalitions. Microsoft alone has signed offtake commitments measured in millions of tons.
Across all four channels, the total committed value of engineered CDR purchases now substantially exceeds $1 billion, with delivery dates ranging from this year through the early 2030s.
What's actually being purchased
The buyer side has converged on a small set of evaluation criteria: durability of storage, additionality, MRV credibility, and price per ton. The supply side has fragmented across many technology pathways that score differently on each.
Direct air capture (Climeworks, 1PointFive, Heirloom) delivers high durability with high cost — current pricing sits between several hundred and over a thousand dollars per ton, declining as facilities scale. Bioenergy with carbon capture and storage (Stockholm Exergi, Drax pilots) offers lower cost but introduces additionality questions around the biogenic CO2 baseline. Enhanced rock weathering (Lithos, UNDO, InPlanet) is rapidly improving on cost while MRV protocols mature. Mineralization (Heirloom, 44.01) and ocean-based approaches sit at different points on the cost-durability frontier.
The interesting pattern is that coalitions are not converging on a single “winning” technology. They're explicitly diversifying across pathways. The reason: nobody can credibly predict which technology will scale cheapest in the 2030s, and committing to one approach forecloses optionality.
Where supply has scaled into delivery
The credibility test for the AMC model is whether suppliers have actually delivered against advance commitments. Three years into the model, the answer is mixed but instructive.
Several suppliers have begun delivering meaningful volumes: Charm Industrial (bio-oil sequestration), Heirloom (mineralization), Lithos (enhanced weathering), and others have moved from pilot to commercial delivery, often constrained by capacity rather than demand. Stockholm Exergi's BECCS facility is in construction with offtake contracted years ahead of operations.
Others have hit operational difficulties. Some early-stage suppliers have missed delivery timelines, requiring contract renegotiation. This is not a failure of the AMC model — it's a feature. Coalitions absorbing technology risk via contract terms is precisely what enables suppliers to take operational risk that pure spot-market demand wouldn't underwrite.
What hasn't happened: the engineered CDR market has not become a commodity market. Pricing is still bilateral, contracts are still bespoke, and verification is still done deal-by-deal. Whether that changes in the next five years depends on whether MRV protocols converge across pathways enough to support standardized contracts.
The demand-side gap that matters
The honest framing: coalition demand, while substantial, remains small relative to what would be required for engineered CDR to play its modeled role in net-zero pathways. The IPCC's 1.5°C scenarios assume gigatons of CDR by mid-century. Current committed demand is in the low millions of tons. Even with aggressive scaling, the gap between current AMC volume and modeled need spans roughly three orders of magnitude.
That gap will not be closed by tech-company AMCs alone. It requires either compliance market integration (governments treating engineered CDR as eligible for emissions trading systems) or sustained voluntary demand growth that has historically not materialized at the necessary scale.
Both pathways have moved in the past year. The EU is studying engineered removal inclusion in its emissions trading system. Article 6.4 mechanism rules are being refined. Several governments have begun direct procurement of engineered removals as a market-shaping intervention.
What buyers and observers should track
Five indicators carry information about where the engineered CDR market is heading:
- Cost per ton on completed deliveries, not on press-release pricing. Real delivery pricing is now publicly available for several pathways and reveals where scaling is actually reducing cost.
- Coalition expansion or stagnation. New coalition launches and new member additions signal demand-side strength. Buyer departures signal the opposite.
- Compliance market signals. EU ETS rules, Article 6 mechanism progress, and direct government procurement programs all move the demand frontier.
- MRV protocol convergence. Whether multiple pathways converge on shared verification standards determines whether the market can ever become liquid enough to support standardized pricing.
- Delivery timeline adherence. Whether suppliers are meeting their AMC commitments — or systematically slipping — reveals which technology pathways are scaling on plan.
The framing for investors and corporates
For buyers evaluating engineered CDR purchases: the AMC model has worked well enough that coalition participation is now the credible default rather than the experimental option. Direct bilateral purchases still make sense for specific durability or geographic preferences, but coalition participation aggregates risk across portfolios in a way single deals cannot.
For investors evaluating CDR suppliers: AMC backing is now a financing precondition for most pathways, not a competitive differentiator. The differentiation has shifted to operational execution — delivering against advance commitments without slippage. Suppliers with strong delivery records are the rare ones; suppliers with strong pitches and no delivery records are common.
The market has matured faster than skeptics predicted three years ago. It remains far smaller than supportive scenarios require. Both observations are simultaneously true.