How to price one carbon credit from biochar: Calculation formula and influencing factors

Introduction: Why is determining the carbon credit value of biochar a matter of survival for the project?

In 2024, a biochar project in Southeast Asia sold carbon credits for $190 per ton of CO2 equivalent for Microsoft, while at the same time, many other small-scale projects only managed to sell $15–30 per ton of CO2e on over-the-counter exchanges. The same amount of CO2 is sequestered, but the price difference reaches more than 10 timesWhat is the cause?

The answer lies in pricing mechanism - an area that remains unclear to most Vietnamese businesses, farm owners, and carbon project investors. The global Voluntary Carbon Market (VCM) is booming, and biochar has emerged as one of the most scientifically and commercially viable methods of Carbon Dioxide Removal (CDR). However, the Valuing one carbon credit from biochar It’s not as simple as adding production costs to profit.

Biochar provides double benefit: It generates revenue from carbon credits, improves agricultural land, and addresses the issue of agricultural byproducts (rice husks, sugarcane bagasse, and wood waste). However, if you don’t understand how the market sets prices, you’re likely to end up selling at a loss to international brokers.

This article will provide you with: specific pricing formula, 7 factors that directly influence the selling price, the 2025–2026 reference price framework, and a practical process for estimating the value of your biochar project on your own before sitting down at the negotiating table.

What are carbon credits from biochar? Formation mechanisms and units of measurement

Definition according to international standards

Carbon credits from biochar is a certificate confirming that 1 ton of CO2 equivalent (tCO2e) has been removed from the atmosphere and sustainably stored in biochar. Each credit equals 1 ton of CO2e, which is the standard trading unit on all international exchanges. This credit is issued after the project undergoes a verification process MRV (Monitoring - Reporting - Verification) strictly monitored by an independent third party (VVB - Validation and Verification Body).

The CDR mechanism and biochar’s “premium” status

Unlike credits earned from reduce emissions (emission reduction), biochar belongs to the group CDR - removing CO2 that is already in the atmosphere. The pyrolysis of biomass converts organic carbon from plants into a stable form of carbon that is resistant to decomposition in the soil for hundreds to thousands of years.

It is precisely this "permanence" and the ability to measure it accurately that have placed biochar in the credit category high quality, sought after by technology and financial conglomerates to fulfill their commitments Net Zero.

Distinguishing biochar from other types of credits

• Afforestation/REDD+: Carbon stored in trees is at risk of being released back into the atmosphere (due to wildfires or deforestation). The average price is $5–25 per ton of CO2e.
• Renewable energy: Reduce emissions, not eliminate them. Low cost, approximately $1–10 per ton of CO2e.
• Biochar: Permanent removal, storage for over 100 years. Price: $120–600 per tCO2e.

The storage lifecycle and the significance of valuation

Biochar is classified permanence based on the ratio H/C_org (hydrogen/organic carbon). The lower the H/C_org ratio, the more stable the carbon. International standards classify:

• H/C_org < 0.4: Storage >100 years (meets credit-grade standards)
• H/C_org < 0.7: Storage life of 50–100 years

The longer the storage period, premium price the higher, as the sustainability of the credits increases.

Common issuance standards

Each standard has a different audit cost structure and technical requirements, resulting in significantly different prices.

A Formula for Valuing Carbon Credits from Biochar: From Theory to Practice

Basic formula

The price of one carbon credit for biochar is determined by four factors:

> Selling Price = Production Cost + Verification Cost + Profit Margin + Quality Premium

Understanding each component helps you negotiate a fair price and avoid being pressured into accepting a lower offer.

Step 1: Calculate the amount of CO2e sequestered

Standard formula:

> CO2e sequestered = Biochar mass × % Carbon sequestered × Permanence factor × 3.67

In which:<br> - % Fixed carbon: Typically 60–85%, depending on the raw materials and technology<br> - Permanence coefficient: 0.74–1.0 depending on H/C_org<br> - 3.67: Conversion factor from C to CO2 (44/12)

Illustrative example: 1 ton of high-quality biochar with 75% fixed carbon and a permanence of 0.87 will sequester: 1 × 0.75 × 0.87 × 3.67 = 2.39 metric tons of CO2e.

Step 2: Deduct emissions generated during production (LCA)

Life Cycle Assessment (LCA) Require the calculation of all emissions generated throughout the value chain:

• Transportation of raw materials
• Energy required to operate a pyrolysis furnace
• Gas emissions (CH4, N2O) during pyrolysis
• Deliver the product to the point of use

Generally, emissions account for 10–25% Gross CO2e sequestration. Net credits = Gross CO2e − LCA emissions.

Step 3: Apply the permanence factor

Puro.earth uses a permanence formula based on experimental data on the decomposition rate of biochar under different soil conditions. Tropical projects (warm, humid soils) have lower coefficients than temperate projects due to faster decomposition rates.

Step 4: Cost-plus vs. Market-based Pricing

Cost-plus pricing:

> Selling price = (Production cost + Verification cost) / (1 - Desired margin)

Suitable for small projects that do not have a strong brand presence in the market.

Market-based pricing:

Based on current market prices (market comparables), adjusted for project quality. Suitable for projects with established credibility, which can be sold directly to major buyers such as Microsoft and Stripe.

Practical calculation example: A 1,000-ton-per-year biochar project using rice husks in the Mekong Delta

Input data:<br> - Biochar production: 1,000 metric tons per year<br> - % Carbon sequestration: 70%<br> - Permanence factor: 0.87<br> - LCA emissions: 18% (furnace operation, logistics)

Calculation:<br> - Gross CO2e: 1000 × 0.70 × 0.87 × 3.67 = 2,235 tCO2e<br> - Net CO2e (after LCA): 2,235 × (1 - 0.18) = 1,833 credits

Cost per credit structure:

• Rice husk material: $8
• Pyrolysis operation: $25
• Verification fee (Puro.earth): $12
• Trading platform and brokerage fees: $10
• - Total cost: $55 per credit hour

With an average market price of $150 per credit, Gross profit margin reached $95 per credit, equivalent to annual revenue of approximately $275,000 from carbon credits alone (not including revenue from the sale of biochar as fertilizer).

7 key factors that directly influence the price of one carbon credit for biochar

1. Feedstock

The type of raw material is the deciding factor both cost and quality credits:

• Wood waste/sawdust: High fixed rate (75–85%), easy to standardize. Price: $180–300 per tCO2e
• Rice husks: Available in Vietnam, fixed rate of 65–75%. Price: $130–200 per tCO2e
• Sugarcane bagasse: High humidity, high pretreatment costs. Price: $120–180 per ton of CO2e
• Mixed agricultural waste: Difficult to standardize, lower prices

2. Pyrolysis technology

Temperature and residence time directly affect H/C_org:

• Slow pyrolysis (400–600°C, >1 hour): Produce high-quality biochar with good permanence
• Fast pyrolysis (>700°C, a few seconds): Lower credit hours
• Gasification: Primarily used for gas production, biochar byproducts vary in quality

The more advanced the technology becomes and the more parameters it can measure, verification costs continue to decline and the higher the selling price.

3. End-use

When biochar is used in applications long-term sustainability, tuition fees have risen significantly:

• For use in concrete and asphalt: Extremely high durability, price up 30–50%
• Agricultural land reclamation: Standards, reference prices
• Water filtration: Need to verify there are no carbon leaks; average price

4. VVB Certification Standards and Reputation

Credits verified by reputable certification bodies (SCS Global, TÜV, DNV) command higher prices 20–40% Compared to lesser-known VVBs, Puro.earth and EBC generate "premium brand" credits that are prioritized by major buyers.

5. Co-benefits

Projects that generate non-carbon benefits will be valued more highly:

• Contribution SDGs (No Poverty, Zero Hunger, Climate Action)
• Create local jobs
• Protecting biodiversity
• Increasing agricultural productivity

Premium add-on benefits $20–80 per ton of CO2 equivalent in the selling price.

6. Geographic Location and Logistics

Projects located near export ports with good logistics infrastructure will reduce biochar shipping costs and audit costs (as experts are more easily accessible). Projects in remote areas are typically subject to a 10–15% discount.

7. Timing and Method of Sale

• Spot (immediate delivery): Highest price, but inventory risk
• Forward contracts: Stable prices, priority given to large buyers
• Pre-sale: 30–50% discount to raise funds early

New projects often opt for pre-sales to generate cash flow, but this is precisely why many Vietnamese projects end up selling at a loss.

Market fluctuations and the biochar credit reference price range for 2025–2026

Current global price levels

According to data compiled from Puro.earth, CDR.fyi, and a report by Allied Offsets, the price of biochar credits in 2025 is expected to range from $120–600 per ton of CO2e:

• Low-end segment ($120–$180): Small projects, emerging standards
• Standard segment ($180–$300): Puro.earth CORCs, Verra VCS
• Premium segment ($300–$600): EBC Premium, concrete applications, exclusive buyer

Comparison of trading platforms

• Puro.earth Marketplace: Specializing in CDR, with transparent pricing, and holding a significant share of the biochar market
• CIX (Climate Impact X): Singapore Exchange, competitive pricing
• Patch: B2B platform serving retail businesses
• Supercritical: Specializing in high-end CDR; the client is a technology corporation

Demand from technology companies

Microsoft is leading the way with a commitment to purchase millions of CDR credits, a significant portion of which consists of biochar. Google, Stripe, Shopify both include the Frontier Fund and Climate Commitments, creating stable demand drive up the price of biochar.

The CDR.fyi report shows that total biochar transactions in 2024 reached over 500,000 credits, a threefold increase compared to 2022.

Legal implications

• CORSIA (ICAO): Biochar is not included in Phase 1, but may be included in future phases
• CBAM (EU): Indirectly creates offset demand from EU exporting companies
• Decree No. 06/2022/NĐ-CP Vietnam: Establishing a domestic carbon market, with a pilot operation planned for 2025–2027

Forecast for 2026–2030

McKinsey forecasts that the global CDR market will reach $40–80 billion by 2030. BloombergNEF believes that biochar prices may see a slight adjustment as supply increases, but the segment High quality remains at $200–400 per ton of CO2e by 2030.

Practical Guide: How to Estimate the Value of Your Biochar Project

Create an Excel pricing template

An effective Excel valuation file should include four main sheets:

1. Input Data: Raw materials, production volume, technology, location

2. CO2e Calculation: Calculate gross and net CO2e using the formula provided

3. Cost Structure: Breakdown of costs by stage (raw materials, operations, verification, platform fees)

4. Revenue & Scenarios: 3 price scenarios (pessimistic/base/optimistic)

10-Question Checklist Before Valuation

• Is there a stable supply of raw materials for the next 10 to 20 years?
• Has H/C_org been measured yet, and is it below 0.4?
• Which standard should I choose (Puro, Verra, EBC)?
• Has VVB agreed to verify this yet?
• Have the LCA costs been fully accounted for?
• What are the co-benefits of increasing the premium?
• Have you researched the prices of 3–5 similar projects yet?
• Spot, forward, or pre-sale?
• Are there any potential buyers, or has it been listed on a platform?
• What is the minimum price negotiation strategy?

Free data sources for reference

• Puro.earth: Disclosure of Transactions and Public Prices
• CDR.fyi: Keep track of all global CDR deals
• Allied Offsets: Carbon Market Report
• Biochar-Market.com: Biochar and credit price updates
• Carbon Credits.com: News and price analysis

When should you hire a professional consultant?

Hire a consultant when:

• Projects >5,000 credits/year
• Want to register for Verra or EBC (a complex process)
• No MRV experience

Consulting fees vary $15,000–$80,000 for an average project, but ROI is typically 3–5x thanks to better prices and fewer errors.

3 Common Valuation Pitfalls

1. Selling in a pre-sale too early with deep discounts: When a project has not yet been verified, many parties offer 40–50% of the market price, locking in revenue for the long term
2. Failure to value co-benefits: Failing to account for social/environmental value results in a loss of $30–$100 per credit
3. Selecting the wrong standard: It’s easy to meet the basic standards at a low cost, rather than investing more to meet the premium standards

Case Study: Cost Analysis of Two Typical Biochar Projects

Case 1: Small-scale project in the Central Highlands (500 tons of biochar per year)

• Ingredients: Coffee husks, pruned coffee branches
• Technology: Slow pyrolysis, medium-scale furnace
• Standard: Puro.earth CORCs
• Net CO2e emissions: ~900 credits per year
• Cost per credit hour: $62
• Average selling price: $155 per credit hour
• Gross profit margin: ~60%
• Credit revenue: ~$140,000 per year

Case 2: A 10,000-ton-per-year industrial project using sugarcane byproducts

• Ingredients: Sugarcane bagasse from a sugar mill
• Technology: Continuous industrial pyrolysis
• Standard: Verra VCS (VM0044)
• Net CO2e emissions: ~17,500 credits per year
• Cost per credit hour: $48 (economies of scale)
• Average selling price: $135 per credit hour (forward contract with a corporate buyer)
• Credit revenue: ~$2.36 million per year

Comparisons and Lessons

Lesson: Small-scale project with a price per credit higher thanks to Puro.earth Premium, but the major project came out on top absolute size. Vietnamese businesses should choose a strategy that aligns with their resources: for pilot projects under 1,000 credits, they should choose Puro.earth; for projects over 5,000 credits, they should consider Verra to maximize overall profits.

Conclusions and Action Plan

3 Golden Rules for Valuing Biochar Carbon Credits

1. Quality determines price: Invest in technology and premium certifications to enter the $200+ per credit segment

2. MRV Data Transparency: Major buyers are willing to pay a premium for projects with accurate and transparent metrics

3. Don’t rush to sell during the pre-sale: Unless you really need the cash, wait until verification is complete to sell at a price 40–70% higher.

A 5-Step Guide to Optimizing Your Selling Price

1. January–February: Conduct a feasibility study, select standards, and estimate CO2e

2. March–June: Designing the MRV system, selecting VVBs, and preparing documentation

3. July–October: Production Operations and Data Collection

4. November 14: Verification, issuance of credits

5. 15+ months: Sell through a trading platform or directly to a corporate buyer

Future trends

AI and Digital MRV Verification costs are falling sharply—from $15–20 per token to as low as $5–8 over the next 3–5 years. Platforms like Pachama and Cloverly use machine learning to monitor projects in real time, paving the way for smaller projects to enter the market more easily.

FAQ

What is the current price of biochar credits? Prices range from $120 to $600 per ton of CO2e, averaging around $150 to $250 depending on quality and standards.

Can small projects sell credits? Yes, projects producing 300–500 tons of biochar per year are still eligible to register with Puro.earth or Riverse.

How long does it take from production to the sale of credits? Typically 12–18 months for the first release; subsequent releases are faster (3–6 months).

Does Vietnam have a stock exchange yet? The domestic carbon market is currently in a pilot phase under Decree 06/2022 and is expected to begin full-scale operations in 2028. At present, Vietnamese projects primarily sell their credits through international exchanges.

Call to Action

Valuing carbon credits from biochar is not an art, but rather science has clear formulasThe better you understand these factors, the more confident you’ll be in negotiations and in maximizing revenue. If you’re currently involved in a biochar project or are considering an investment, Don’t start negotiations without a detailed valuation report. Create an Excel template following the instructions above, collect data from CDR.fyi and Puro.earth, and consult with at least three experts before signing your first carbon credit sales contract. The carbon market is maturing every day—those who prepare thoroughly will benefit the most.