Teravent
Hybrid Carbon
Standard
Governing standard for projects that unite biological carbon sequestration with engineered processes - producing removals more durable, measurable, and scalable than either mechanism alone.
Hybrid projects combine at least one biological or ecological carbon sequestration mechanism with at least one engineered process that materially alters the rate, quantity, durability, or measurability of carbon sequestration.
THS v1.0 is wholly independent. It does not incorporate by reference, adopt, or depend upon any external carbon crediting programme, registry, or standard-setting body.
Durability Classification
Every Teravent Hybrid Credit (THC) carries a durability class encoding the permanence of its storage mechanism.
Soil organic matter, living biomass, and organic sediments subject to biological decomposition cycles.
Biochar, long-lived wood products, bamboo products, buried biomass, and engineered organic materials.
Silicate mineral carbonate products from enhanced weathering or in-situ mineralisation reactions.
Eight Governing Modules
THS v1.0 is structured across eight self-contained modules that together constitute a complete, independent crediting framework.
Governance & Scope
TSA issuing authority, hybrid project definition, 14-pathway eligibility table, comprehensive definitions glossary, relationship to TNS v1.0 and TTS v1.0 companion standards, and project exclusions.
Additionality & Baseline
Three-test framework applied to the combined hybrid design. Three-layer baseline structure: biological baseline, technology component baseline, and combined system net baseline. Crediting period table for all 14 pathways.
Quantification & MRV
Dual-component accounting boundary, net THC formula, eight carbon pool assessment table, full GHG emissions inventory, three leakage types, uncertainty deduction framework, dMRV and remote sensing protocols, and verification requirements.
Carbon Durability & Permanence
Three durability classes, NPRR assessment framework, buffer pool contribution rates, biochar stability protocol using H/Corg atomic ratio, and reversal event notification obligations.
Environmental & Social Safeguards
Do No Significant Harm across soil health, biodiversity, water resources, and food security. FPIC, community benefit sharing, technology risk disclosure in local languages, and grievance mechanism requirements.
Validation & Certification
Ten-stage registration process from hybrid eligibility assessment through ongoing verification. Seventeen-element PDD requirements. Three certification tiers: Standard, Premium, and Frontier.
Credit Issuance & Labelling
THC serial number structure with durability class encoded, worked examples by pathway, full credit metadata specification, and eight co-benefit quality labels including Soil Health+, Frontier Hybrid, and Indigenous Stewardship.
Registry, Retirement & Claims
TCR public disclosure requirements, six permitted retirement claim types including regenerative agriculture and circular bioeconomy claims, double counting prevention, standard versioning protocol, and sanctions and appeals.
14 Hybrid Pathways
Each pathway combines a biological sequestration mechanism with a defined technology or engineering component.
Biochar Production & Soil Application
Enhanced Weathering on Agricultural Land
Agroforestry with Biochar
Climate-Smart Agriculture
Managed Grazing with Carbon Monitoring
Precision Soil Carbon Management
Engineered Wetlands
Biomass Burial
Bamboo Carbon Systems
Urban Green Carbon Infrastructure
Bioenergy + Biochar Systems
Carbon-Negative Building Materials
Seaweed & Macroalgae Cultivation
Constructed Soil Carbon Systems
Teravent Hybrid Credits (THC)
Every credit carries a unique serial number, durability class, and verified co-benefit profile.
Annex Index
Fourteen methodology annexes, each defining eligibility, quantification, and monitoring requirements for a specific hybrid pathway.
| Annex | Pathway | Nature Component | Technology Component | Class | Methods |
|---|---|---|---|---|---|
| A | Biochar Production & Soil Application | Soil carbon system | Engineered pyrolysis | II | BCH-M01–04 |
| B | Enhanced Weathering on Agricultural Land | Agricultural soil & crops | Silicate mineral amendments | III | ERW-M01–03 |
| C | Agroforestry with Biochar | Trees & crops | Biochar soil amendment | I–II | AFB-M01–02 |
| D | Climate-Smart Agriculture | Cropland & pasture | Precision monitoring | I | CSA-M01–04 |
| E | Managed Grazing with Carbon Monitoring | Pasture & grassland | Digital MRV | I | MGR-M01–03 |
| F | Precision Soil Carbon Management | Agricultural soil carbon | Remote sensing & IoT sensors | I | PSC-M01–03 |
| G | Engineered Wetlands | Wetland vegetation & sediment | Engineered hydrology | I–II | EWT-M01–03 |
| H | Biomass Burial | Harvested biomass carbon | Anaerobic burial systems | II | BMB-M01–03 |
| I | Bamboo Carbon Systems | Bamboo biomass & soil | Harvesting, biochar, products | I–II | BAM-M01–03 |
| J | Urban Green Carbon Infrastructure | Urban vegetation | Built environment integration | I | UGR-M01–03 |
| K | Bioenergy + Biochar Systems | Biomass feedstock carbon | Pyrolysis for energy & biochar | II | BBK-M01–02 |
| L | Carbon-Negative Building Materials | Bio-based material carbon | Engineered building products | II | CBM-M01–04 |
| M | Seaweed & Macroalgae Cultivation | Marine biomass carbon | Cultivation & sinking | I–II | SWD-M01–03 |
| N | Constructed Soil Carbon Systems | Engineered soil sequestration | Designed soil substrates | I–II | CSC-M01–02 |
Register a Hybrid Project
Projects must first obtain a Hybrid Eligibility Assessment from the Teravent Standards Authority before developing a Project Design Document.