What Route 12 is (and isn't yet)
R12 is the design-intent lane for engineered carbon removals: the class of removals that capture and store CO2 through industrial or geochemical processes rather than through biological growth. Specific classes covered are Direct Air Capture (DAC), enhanced mineral weathering, mineral carbonation, ocean alkalinity enhancement, and BECCS (bio-energy with carbon capture and storage).
R12 is also clearly roadmap status. The protocol pattern applies (the same 7-stage skeleton used by Routes 4 through 11), but the specific methodology bridges, the durable-removal verifier panel composition, and the evidence-token configuration per removal class are part of the design work still pending. The page is honest about this status rather than claiming R12 is operationally ready.
What R12 will be when it ships: a finance-grade lane for engineered removals with the same audit discipline as the rest of the EDMA protocol. Same binary gate, same locked accounting plan, same mandatory retirement of overlapping claims, same ex-post verifier sign-off, same consumed-to-carbon discipline at issuance. What changes between engineered classes is the evidence schema (different MRV for a DAC plant than for a mineral weathering deployment than for a BECCS facility) and the storage chain-of-custody (geologic well vs mineral product vs building material vs ocean injection).
What R12 is not: an operational lane today. The page describes what the design will deliver and tracks the readiness signals that govern when each class can ship.
The engineered-removal classes
Direct Air Capture (DAC). Industrial facilities that pull CO2 directly from ambient air using chemical sorbents and then concentrate and store the CO2 in geologic formations, mineralize it, or embed it in long-lived products. Operators include Climeworks (Switzerland and Iceland), Carbon Engineering (now part of Occidental, deploying in the US), 1PointFive, and a growing pipeline of pre-commercial deployments. Microsoft's deal with Occidental for 500,000 carbon removal credits from DAC facilities is one of the more visible buyer commitments in the space.
Enhanced mineral weathering. Spreading crushed silicate rocks (basalt, olivine) on agricultural land or mine tailings to accelerate the natural weathering reaction that captures atmospheric CO2 over geologic time. Durability is measured by the chemistry of the weathering reaction; MRV tracks rock spread, dissolution rate, and downstream water-chemistry confirmation.
Mineral carbonation. Reacting CO2 with calcium or magnesium oxides to form stable carbonate minerals. Can be done at industrial-waste streams (cement, steel) or with mined rock; produces a stable mineral product that can be used in construction or stored.
Ocean alkalinity enhancement. Adding alkaline minerals (limestone, olivine) to seawater to increase ocean alkalinity and accelerate CO2 absorption by the ocean. Still largely at research and pilot scale; MRV is more challenging than terrestrial removals because the carbon ends up in seawater rather than at a discrete storage site.
BECCS (bio-energy with carbon capture and storage). Burning biomass for energy (electricity, heat, or fuel) with the resulting CO2 captured at the smokestack and stored. The carbon claim is the biogenic CO2 captured (the biomass having pulled it from the atmosphere during growth); the energy co-product is separately monetised on Routes 1, 2, or 10 depending on the class, never as R12 carbon.
Each class has its own MRV, durability profile, and pricing reality. What unifies them is the engineered-process character: the carbon claim depends on industrial process metering and storage chain-of-custody rather than on ecological measurement.
The market reality R12 is designed for
The market for engineered removals is small in volume but growing fast in commitment value. Long-tenor forward deals from buyers with deep decarbonization budgets dominate the supply side: Microsoft has committed to substantial DAC and engineered-removal procurement; Frontier (a coalition of Stripe, Alphabet, Shopify, Meta, and McKinsey) has committed roughly $1B to engineered removals through 2030; Climate Crisis Action Fund and other multi-buyer coalitions follow similar patterns.
Pricing reflects the durability and the early-stage cost curve. DAC currently clears in the hundreds of dollars per tonne range, declining as scale grows. Enhanced weathering and mineralization typically clear at lower prices (high tens to low hundreds), reflecting different cost profiles. BECCS pricing depends heavily on the underlying biomass source and the storage pathway.
What buyers in this market value: durability (geologic-scale storage stability), MRV rigor (industrial process metering meets corporate-audit standards), and credible methodology infrastructure (ICVCM CCP labelling for engineered classes is in development; CDR.fyi tracks the registry-level supply). R12's design intent positions for this segment of the market: not the high-volume nature-based slice (which Routes 5-8 cover) but the durable, audit-grade slice where the buyers are sophisticated and the price reflects the integrity bar.
How R12 will work
The 7-stage protocol pattern applies to R12 the same way it applies to Routes 4 through 11. After the additionality and class-eligibility gate at S01, R12 will lock the accounting plan at S02: the methodology source and version, the durability rating per class, the uncertainty deduction, the permanence buffer sized to class-specific reversal risk. Measurement at S03 will run through a class-specific evidence schema (DAC sorbent metering and storage well attestation; mineralization tonnage and assay records; BECCS smokestack capture rate and geologic storage chain).
The S04 stage will enforce the One-Claim discipline as elsewhere in the protocol. For BECCS specifically, this is critical: the electricity, heat, or fuel co-product from biomass combustion is monetised on energy routes (Routes 1, 2, or 10) separately and never as R12 carbon. The retirement record carries the separation as a first-class property.
The S05 stage will require independent accredited verifier sign-off. The verifier panel for engineered removals is a narrower group than for nature-based routes (different specializations are required for DAC vs mineral weathering vs BECCS), and the panel onboarding is part of the readiness work.
The S06 stage will mint vintage-batched durable removal tonnes with the storage chain-of-custody as a first-class property of the on-chain record. The S07 stage will sell and settle the tonnes in stablecoins with the same 4% fee structure (2% seller + 2% buyer with 50% burn) as every other route.
The seven-stage diagram below shows the design intent. Every stage uses forward-looking language because the specifics are still being scoped.
Readiness signals R12 tracks
R12 readiness depends on three categories of external work coming together.
ICVCM CCP labelling for engineered classes. The Integrity Council for the Voluntary Carbon Market has been issuing Core Carbon Principles labels for specific methodologies (VM0047 for ARR, VM0048 for REDD+, JNR v4.1, ART TREES v2.0 are the most-cited examples in R5 and R6). The CCP working groups for engineered removals are active; the labelling for DAC, mineralization, and BECCS will follow as methodologies clear the integrity bar.
Methodology development at the voluntary registries. Puro.earth has been the most active registry for engineered removals to date, with operational methodologies for biochar (covered under R8) and several engineered classes including enhanced rock weathering, terrestrial storage of biomass, and mineralization. Verra has engineered-removal methodologies under development. The methodology landscape is evolving and R12 will follow the methodologies that clear the highest integrity bar.
Durable-removal verifier capacity. The recognized voluntary-market verifier firms (the major audit and assurance houses) are building specialised capacity for engineered-removal verification. The verifier panel for R12 will be admitted to the Attestor Registry as VERIFIER-class entities as the capacity matures.
What is mature today: the underlying EDMA protocol architecture (PoV Gate, One-Claim Ledger, Attestor Registry, Ethereum L1 anchoring, CARBON_TONNE contract, the stablecoin payout rail). What is being scoped for R12 specifically is the class-specific layers on top: evidence schemas, verifier panels, methodology bridges. The page reflects this honestly rather than promising more than is currently designed.
Stacking with other routes
R12 will stack with other carbon routes when they cover different units of benefit. A BECCS facility might generate energy attributes through Routes 1 or 2 (the electricity or heat co-product), R12 carbon tonnes (the biogenic CO2 captured and stored), and (depending on the biomass source) potentially intersect with Routes 5 through 8 carbon claims (if the biomass is from a separately credited project). The protocol enforces the area and unit-of-benefit separation at S04.
R12 will be incompatible with Route 11 (methane avoidance) on the same molecules: a tonne of CH4 captured and combusted in a BECCS-like configuration is either an R11 methane-avoidance claim OR an R12 fossil-displacement claim, not both. The retire-first rule governs the choice.
R12 will be compatible with Route 3 (community pool participation) on independent assets, the same way the other routes coexist with R3.
Where it stands
R12 is the only route in the EDMA framework that does not yet have an operational protocol spec. The protocol pattern applies (7-stage skeleton, same as Routes 4 through 11) but the engineered-class specifics are part of the design work still pending.
The work areas are: class-specific evidence schemas (DAC, mineralization, enhanced weathering, BECCS, ocean alkalinity each need a different MRV approach); the durable-removal verifier panel composition (different from forestry, coastal, or methane panels); the methodology bridges (which engineered-removal methodologies the protocol will support at issuance and at retirement); and the evidence-token configuration (the parallel to ETT, GRO, HTT, and PRO for engineered classes).
Readiness will be tracked against the ICVCM CCP working groups, the voluntary registries' methodology development, and the verifier panel capacity build-out. The page will be updated as each class becomes operationally ready.
For the protocol-level architecture R12 depends on (which is the same architecture every other route runs on), see Proof-of-Verification, One-Claim Ledger, Attestor Registry, and the sibling complex route pages: R9 Diesel-Solar Microgrids, R10 Renewable Thermal, and R11 Methane Avoidance.
