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Permanent carbon removal you can’t get anywhere else.

We source, create, and guarantee the supply your net-zero target demands. The marketplace for buyers who need delivery, not hope.

Access the marketplace in the Supercritical platform
  • 1.3M tonnes contracted
  • 200+ corporate buyers
  • 600+ suppliers tracked
  • 80% of global durable CDR market covered

Companies shaping the future

⅓ of corporate buyers purchase through our marketplace

High-quality carbon removal is already supply-constrained

Last year, projects that passed our vetting sold 4:1 the rate of lower-quality supply. The best tonnes aren't sitting on a shelf. They're locked into exclusive long-term deals before most buyers even start looking.

The gap is about to widen. 55% of biochar projects failed to launch last year. SBTi mandates permanent CDR procurement from 2028, and most companies underestimate how much they’ll need.

Buyers can secure supply now—or scramble for what’s left later.

Read our market data reports

We source, create, and secure exclusive supply

We find the best projects, co-develop new supply from scratch, and provide distribution. When the right project doesn’t exist, we create it. Exomad Green, the world’s #1 biochar project, has been our exclusive distribution partner for three consecutive years.

Procurement designed for delivery, not optimism

Delivery risk is real. We build three layers of protection: buffer pool credits, pre-vetted pathway alternatives from 80% market coverage, and contracts designed for delivery variability. When a project underdelivers, your portfolio absorbs it.

Embedded in the science and policy shaping this market

Our climate science team, led by Dr. Mai Bui, advises SBTi on CDR guidance and sits on the Puro.earth scientific advisory board. We’re in the room when the standards are written, so you can stay ahead of shifting regulation. 118-point vetting framework. 84% of projects assessed don’t make the cut.

From concept to 1 million tonnes in half the time

We partnered with a pre-operational biochar project to secure a 1M tonne offtake with the world’s most rigorous buyer. Our experts helped design the project, managing due diligence, negotiating terms, and structuring the legal architecture. The deal grew massively from its initial scope.

Broad coverage.
Deep expertise where it matters.

We track 600+ suppliers across eight removal methods: biochar, BECCS, enhanced rock weathering, direct air capture, marine CDR, bio-oil, biomass burial, and mineralization. We go deepest where the market is ready—biochar today, expanding as other methods mature.

  • Biochar

    Biochar is charcoal-like material rich in stable carbon. It is produced by heating biomass in an oxygen-limited environment in a process called pyrolysis.

    Permanence: MEDIUM From: $162/t
  • BECCS

    Bioenergy with carbon capture and storage (BECCS) is a powerful engineered carbon removal method. Biomass absorbs atmospheric CO₂ as it grows. BECCS captures the CO₂ when the biomass is used to generate energy and stores it underground for thousands of years or longer.

    Permanence: HIGH From: $350/t
  • Enhanced weathering

    Enhanced rock weathering (ERW) takes natural weathering of silicate rocks that removes & mineralizes atmospheric CO₂ and speeds it up dramatically.

    Permanence: HIGH From: $312/t
  • Direct air capture

    Direct air capture (DAC) is a chemical process to capture ambient CO₂ from the atmosphere.

    Permanence: HIGH From: $618/t
  • DAC with ocean storage

    This employs seawater electrolysis to capture and convert atmospheric CO₂ into carbonate solids for construction and permanently stores dissolved bicarbonate ions in the ocean.

    Permanence: HIGH From: $812/t
  • Woody biomass sinking

    This is a method that sequesters carbon by submerging leftover woody materials in the oxygen-depleted layer of the Black Sea, which is approximately 2 kilometers deep.

    Permanence: MEDIUM From: $375/t
  • Bio-oil

    Bio-oil and biochar production both convert waste biomass through pyrolysis. Bio-oil is a liquid stored in geological repositories, while biochar is applied to soils.

    Permanence: HIGH From: $750/t

For buyers

Every tonne we sell is permanent, verified carbon removal. Whether you're planning your first CDR purchase or scaling a decade-long portfolio, we source, create, and guarantee the supply you need.

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For suppliers

We commit to your project before you’re famous. Committed demand, end-to-end development, and access to 200+ corporate buyers. Become a project the most demanding buyers ask for by name.

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Supercritical in the press

Wired

It’s Time to Get Serious About Carbon Removal

TechCrunch

Supercritical, a carbon removal marketplace, raises $13M Series A led by Lightspeed Venture Partners

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