Biochar quietly became the dominant durable carbon removal pathway. In Q2 2025, it delivered 89.4% of all durable CDR credits issued globally. Microsoft, Frontier, and Google are buying billions of dollars worth. Here is the buyer side, the supplier side, the pricing reality, and where the puck is going.
The biochar buyer side is concentrated. Five entities account for the majority of durable CDR commitments, and biochar features prominently in nearly all of them.
Frontier Climate is the anchor. Frontier is an advance market commitment funded by Stripe, Alphabet, Shopify, Meta, McKinsey, JPMorgan, Klarna, Block, and others. The structure is borrowed from vaccine procurement: a pool of buyers commits in advance to pay a premium for verified removal, giving suppliers the confidence to invest in capacity. As of 2025, Frontier has committed over $1 billion to durable CDR. Roughly 30% of that pool, by value, has gone to biochar. Frontier 2024 commitments alone directed approximately $60 million specifically to biochar suppliers.
Microsoft is the largest single corporate buyer in the world, by a wide margin. In Q1 2024 alone, Microsoft contracted 129,000 tonnes of biochar removal. Across 2024 and 2025, Microsoft committed an estimated $200 million to biochar-specific contracts, including a multi-year deal with Exomad Green in Bolivia for forestry residue conversion. Microsoft's CDR portfolio also includes direct air capture and enhanced rock weathering, but biochar dominates by tonnage delivered.
Google buys both directly and through Frontier. Google has signed multi-thousand-tonne deals across several biochar suppliers since 2023, integrating biochar into the Alphabet sustainability ledger. The deals are smaller than Microsoft's individual contracts but consistent and growing.
Stripe is the founding Frontier member and has been buying biochar since 2021, before most of the corporate world had heard of durable CDR. Stripe Climate operationalizes the procurement mechanism that became Frontier.
Shopify runs a Sustainability Fund that includes biochar alongside other removal categories. Shopify is also a Frontier funder, so it has dual exposure to the market.
Beyond the top five, the next ring of buyers is forming. The Symbiosis Coalition, launched in 2024 by Salesforce, JPMorgan, BCG, and Visa, is a billion-dollar commitment to nature-based removal. Symbiosis is broader than biochar (it includes reforestation and soil carbon), but biochar is part of the procurement scope. Klarna and Block buy through Frontier. The pattern is consistent: when a corporate sustainability team builds a serious removal portfolio, biochar is in it.
The geographic distribution of buyers is heavily concentrated in North America, with Europe second and Asia barely present. This matches the broader pattern of corporate net zero commitments. Buyer demand is a function of disclosure pressure, regulatory incentive, and shareholder expectation, all of which are strongest in jurisdictions with mature ESG frameworks. For a deeper view of how capital is moving across the green economy generally, see Follow the Money.
The supplier side of biochar is geographically distributed in a way that almost no other CDR pathway is. Suppliers exist on every inhabited continent, using locally available feedstocks, with widely varying business models.
Pacific Biochar (United States) operates one of the largest biochar production footprints on the West Coast, sourcing forestry residues from California fire prevention thinning programs. The fire mitigation angle gives Pacific Biochar a dual narrative: every tonne of biochar produced is also a tonne of biomass removed from a fire-prone forest. Certified by Puro.earth.
Mash Makes (Denmark) converts cashew shell waste from its Indian processing operations into biochar, paired with green energy production. Mash Makes is notable for offering 30-plus year carbon contracts, locking in pricing and supply for buyers who want long-duration certainty. Microsoft is a major Mash Makes customer.
Carbofex (Finland) runs an industrial pyrolysis facility integrated with district heating, capturing waste heat from biochar production to warm Finnish homes. The dual-output model (biochar plus thermal energy) pushes the carbon math from "carbon negative" to "highly carbon negative" by displacing fossil heat. Frontier supplier.
Husk (Cambodia) takes a different approach: a smallholder model that pays Cambodian rice farmers for husks, processes them into biochar locally, and returns biochar amendment to participating farms while selling carbon credits to corporate buyers. Husk credits trade at a premium because of the social impact and traceability story. To understand why amendment matters, see Biochar vs Compost.
Carbon Centric (Norway) connects pyrolysis output to grid-connected district heating, similar to Carbofex, with the additional advantage of Norway's cold climate making winter heat demand reliable.
Exomad Green (Bolivia) converts forestry residues from sustainable timber operations into biochar at industrial scale. Microsoft signed a major multi-year contract with Exomad in 2024, anchoring Bolivian biochar in the global market.
NetZero (France with operations in Cameroon) processes tropical agricultural residues, primarily coffee parchment and cocoa pod husks, into biochar that is returned to farms in West Africa. Combined social impact and removal narrative.
Wakefield Biochar (Tennessee) converts wood waste streams into biochar, serving the US domestic market with a focus on agricultural and horticultural amendment alongside carbon credit sales.
The headline number is the average. The interesting numbers are the spread. Biochar credits traded at an average of $131 per tonne CO2 equivalent in 2023 and reached $164 per tonne in 2025, a 25% increase in two years. Most analysts now expect the average to push past $200 per tonne by 2027 as committed demand outpaces delivered supply.
The position of biochar within the broader durable removal cost curve explains the demand. Biochar is the cheapest verifiable durable removal pathway available at scale today. That position is what attracts the buyer concentration described above.
Within biochar, the price spread is defined by quality tier. Standard wood-feedstock biochar trades at $140 to $160 per tonne. High-temperature biochar produced above 700 degrees Celsius reaches $160 to $200 per tonne because higher pyrolysis temperatures produce more aromatic carbon structures, which extend permanence claims past 100 years. Biochar co-located with district heating, like Carbofex and Carbon Centric, commands $170 to $180 per tonne because the verifiable energy displacement strengthens the lifecycle math. Smallholder and social-impact biochar, like Husk and NetZero, trades at $180 to $250 per tonne because buyers pay a community premium on top of the carbon.
The pricing trajectory is upward across every tier. In 2024, total biochar credit purchases globally crossed $400 million. In 2025, that figure is projected to exceed $700 million. Microsoft alone accounted for roughly $200 million across the two years. The buyer pool is expanding faster than the producer pool, which is the textbook condition for sustained price growth.
For context on what a carbon credit actually represents and why durability matters, see What Is a Carbon Credit? and What Is Carbon Removal?
A biochar credit is only worth what its certification says it is worth. Five standards dominate the market, with sharply different requirements and credibility profiles.
Puro.earth is the most common certifier for biochar credits in the durable removal market. Puro requires a minimum 100-year permanence claim, lifecycle assessment of the entire production chain, and third-party verification of every issuance. Owned by Nasdaq since 2021, Puro is the de facto standard for buyers who want institutional-grade documentation. The Pacific Biochar, Mash Makes, Carbofex, and Carbon Centric credits all flow through Puro.
European Biochar Certificate (EBC) sets quality and production standards for the biochar product itself, not just the carbon credit. EBC certification covers feedstock origin, pyrolysis conditions, contaminant thresholds, and end-use suitability. Many European producers stack EBC product certification with Puro carbon certification to satisfy both agronomic and carbon market requirements.
Isometric is the newest entrant and the strictest. Founded in 2022, Isometric has built a reputation for refusing methodologies that other certifiers accept. Its biochar protocol requires more conservative assumptions on permanence, more rigorous lifecycle accounting, and tighter controls on co-product credit allocation. Buyers who want maximum defensibility on Scope 3 reporting are migrating toward Isometric-certified credits, even at a slight price premium.
Verra, the largest voluntary carbon registry by overall volume, is developing a biochar methodology but has historically been slow to enter the durable removal space. Verra carries the legacy reputation of the avoidance market, which is a mixed asset for buyers concerned about reputation risk.
Gold Standard has a biochar methodology and a strong reputation in the project-based carbon market, particularly for projects with social co-benefits. Smallholder biochar projects in developing economies often choose Gold Standard for the dual climate and development narrative.
The certification landscape is fragmenting upward in stringency, not downward. Every new entrant raises the bar. The era of cheap, lightly-verified carbon credits is over. The buyers who control the money are demanding more and paying more.
Here is the structural condition that determines the next five years of biochar pricing. Demand for durable removal contracted as of 2025 stands at roughly 10 million tonnes of CO2 equivalent per year. Biochar production capacity actually delivering credits is roughly 1.5 million tonnes per year. The gap is 8.5 million tonnes. That gap is the entire investment thesis.
This gap exists because building biochar capacity takes time. A pyrolysis facility needs feedstock contracts, off-take agreements, certification approval, environmental permits, and capital investment that ranges from $5 million for a small operation to $50 million for an industrial-scale plant. The lead time from financing decision to first delivered tonne is 18 to 36 months. Buyer demand can spike in a quarter. Supply cannot.
The price implication is direct. As long as committed demand exceeds delivered supply by a factor of 6 or more, prices will continue to rise. The 2023 to 2025 price increase from $131 to $164 per tonne was the early signal. The 2025 to 2027 trajectory is likely steeper. The number to watch is total delivered tonnes per year, not commitments. Commitments are paper. Tonnes are real.
The investment opportunity is on the supplier side. Every credible biochar producer that can certify under Puro or Isometric has buyers waiting. Capital is available. Feedstock is available. The constraint is execution: project finance, permitting, off-take negotiation, and the operational discipline to actually deliver into the registry. Companies that can compress that 18 to 36 month build cycle will capture disproportionate share.
For the buyer side, the strategic question is different. Buyers who locked in long-duration contracts at 2023 prices are now sitting on positions that have appreciated 25% in two years. Buyers who waited are paying more and finding less inventory available. The advance market commitment structure that Frontier pioneered is being copied because the buyers who used it first got the cheapest credits and the most reliable supply.
The puck is moving toward two things. First, capacity expansion, particularly in regions with abundant feedstock and supportive policy frameworks (Nordic countries, parts of Africa, the US Pacific coast). Second, methodology refinement, as Isometric and others tighten the carbon math and force lower-quality credits out of the market. Both trends push prices up. Both trends consolidate the buyer-supplier relationships described above.
Biochar is not the only durable CDR pathway, but it is the one that is delivering today. For comparison with other pathways, see Biochar vs BECCS. For the complete economic context of what is winning in the green transition, see The Green Revolution Is Winning.
Boundary condition. This post describes carbon market structure and trends, not investment advice. Carbon credit pricing is influenced by policy, certification standard changes, supply-side execution risk, and broader voluntary market sentiment. The trajectory described above assumes current buyer commitments hold and supply continues to lag. A regulatory shift, a major credit scandal, or a step-change in DAC economics would all alter the picture.
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Frequently Asked Questions
The average price of biochar carbon credits rose from $131 per tonne of CO2 equivalent in 2023 to $164 per tonne in 2025, a 25% increase in two years. Quality tiers vary: standard wood-feedstock biochar trades around $140 to $160 per tonne, high-temperature biochar produced above 700 degrees Celsius reaches $160 to $200 per tonne, biochar co-located with district heating commands $170 to $180 per tonne, and smallholder or social-impact biochar reaches $180 to $250 per tonne. Most analysts expect the average to push past $200 per tonne by 2027 as supply lags committed demand.
Source: CDR.fyi pricing dashboard 2025; Allied Offsets registry; BloombergNEF Voluntary Carbon Market Outlook 2025Microsoft is the single largest corporate buyer, contracting 129,000 tonnes of biochar removal in Q1 2024 alone and committing roughly $200 million across 2024 and 2025. Frontier Climate, the advance market commitment funded by Stripe, Alphabet, Shopify, Meta, McKinsey, JPMorgan, Klarna, Block, and others, has committed over $1 billion to durable carbon removal with biochar as the largest single category, roughly 30% of the portfolio. Google, Stripe, Shopify, Klarna, Block, and Salesforce are also active buyers either directly or through Frontier.
Source: Frontier Climate annual reports; Microsoft sustainability reports; CDR.fyi deal trackerBiochar delivered 89.4% of all durable carbon dioxide removal credits issued in Q2 2025, according to CDR.fyi. Three reasons drive the dominance. First, biochar is the cheapest verifiable durable removal pathway at $131 to $164 per tonne, compared to enhanced rock weathering at $200 to $400 and direct air capture above $600. Second, biochar production uses existing pyrolysis technology and agricultural or forestry residues, so it can scale today rather than waiting for first-of-a-kind plants. Third, certification standards from Puro.earth, the European Biochar Certificate, and Isometric have matured, giving buyers confidence in 100-plus year permanence claims.
Source: CDR.fyi Q2 2025 market report; Puro.earth registry; Isometric biochar protocol 2024