Bioenergy +
Biochar Systems
THS v1.0 - Annex K
Bioenergy + Biochar Systems pyrolyses biomass feedstock in facilities specifically engineered to co-produce both usable energy (heat, electricity, or a combustible syngas) and biochar, capturing value from every fraction of the pyrolysis process rather than treating biochar as a standalone product. This dual-output design improves overall project economics relative to biochar-only production and delivers renewable energy alongside a durable carbon sink in the same operation.
How this pathway works
Pyrolysis of biomass produces three fractions: bio-char (solid), bio-oil (liquid), and syngas (non-condensable gas). Standalone biochar production (Annex A) typically uses the syngas fraction only to power the pyrolysis unit itself, discarding surplus thermal or electrical energy potential. Bioenergy + Biochar Systems is engineered from the outset to maximise useful energy output - generating heat, electricity, or a marketable combustible gas stream for external use - while still producing biochar for durable soil carbon storage, at facility scales typically larger than standalone farm-level biochar units.
Under the Teravent Hybrid Carbon Standard (THS v1.0) Annex K, this pathway is classified as hybrid because it requires integrated accounting across both the biomass carbon source and the dual-output pyrolysis technology, allocating emissions and carbon benefit appropriately between the energy co-product and the biochar carbon sink. Teravent Hybrid Credits (THC) are issued for verified net tonnes of biochar carbon stored, net of full lifecycle project emissions, with energy co-product output tracked separately for allocation purposes.
THS v1.0 - Annex K
This pathway is governed exclusively by the Teravent Hybrid Carbon Standard (THS v1.0). No external registry, standard, or methodology is referenced or incorporated.
Two approved methodology variants
THS v1.0 Annex K approves two methodology types, differentiated by the energy output form.
Biomass feedstock is pyrolysed in a facility designed to route syngas combustion heat to a boiler or generator, producing process heat or electricity for on-site use or export to a district heating network or electrical grid, while biochar is collected as the durable carbon co-product. This methodology suits facilities co-located with a heat or power demand - agricultural operations, greenhouses, or small district energy systems.
- Feedstock mass input per batch, documented source and composition
- Heat and/or electricity output metered separately from the pyrolysis process
- Biochar H/Corg atomic ratio tested per production batch
- Biochar application rate metered at ±5% accuracy per hectare
- Co-product allocation methodology applied consistently across verification periods
Rather than combusting syngas on-site for heat or power, this methodology purifies and compresses the syngas stream for export as a marketable fuel product - pipeline injection, cylinder distribution, or use as an industrial process fuel elsewhere - while biochar remains the durable carbon co-product. This approach suits facilities without an immediate on-site energy demand but with access to gas distribution or industrial fuel markets.
- Feedstock mass input per batch, documented source and composition
- Purified syngas output volume, composition, and heating value metered per batch
- Biochar H/Corg atomic ratio tested per production batch
- Biochar application rate metered at ±5% accuracy per hectare
- Syngas end-use tracking to confirm displacement of fossil fuel where claimed as a co-benefit
Which emission sources must be counted
Measurement, reporting
& verification
Biochar carbon content and stability is confirmed through the standard THS H/Corg atomic ratio protocol. Energy or syngas co-product output is separately metered (heat/electricity via standard utility metering; syngas via flow and composition analysis), with a documented allocation methodology dividing feedstock input emissions between the energy and biochar co-products on a mass or energy-content basis, consistently applied across verification periods.
Demonstrating additionality
Leakage types & deductions
Buffer pool & NPRR assessment
| Methodology | NPRR Rating | Buffer Pool Rate | Primary Reversal Risks |
|---|---|---|---|
| BBK-M01 CHP | Low | 7–20% | Incomplete pyrolysis; soil erosion at application site |
| BBK-M02 Syngas Export | Low | 7–22% | Incomplete pyrolysis; application-site erosion |
Key registration criteria
Sustainable Development
Goal alignment
Deployment scope: Global - regions with established biomass residue supply chains and access to local energy demand or fuel distribution markets.
Ready to register your
bioenergy + biochar project?
Submit a Project Concept Note under THS v1.0 Annex K to begin your registration. Select the BBK-M code matching your energy output form, confirm biochar stability via H/Corg testing, and appoint an accredited VVB to validate your PDD.