Puro Pricing and CORC Indexes
Parent concept: Puro CORC200+
Operator / registry: Puro.earth Overview
Market context: Market Hub · Market Volumes and Pricing · Price Indexes and Benchmarks · Buyers and Offtakes · Historical Deals
Ops / fee journey: Puro Project Cycle and MRV
Puro is unusual among biochar standards in publishing public Nasdaq-methodology indexes of reported CORC transactions. Those indexes are not universal quotes for Verra / Isometric / CSI tonnes — treat them as Puro-specific near-term transaction signals.
Nasdaq × Puro indexes
Source (retrieved 2026-09-14): Puro Carbon Removal Indexes
| Index | Scope | Aug 2026 level | 1-mo Δ | 6-mo Δ | YTD Δ |
|---|---|---|---|---|---|
| CORCX | All CORC pathways | €150.40 | +€12.05 (+8.71%) | +€10.29 (+7.35%) | +€15.31 (+11.33%) |
| CORCCHAR | Biochar CORCs | €135.35 | +€6.12 (+4.74%) | +€3.81 (+2.74%) | +€2.50 (+1.88%) |
How to read them
- Indexes track reported near-term CORC transactions under Nasdaq methodology.
- They are a price discovery tool for Puro inventory and offtakes — not a clearing price for every BCR tonne globally.
- CORCCHAR sits below CORCX in the Aug 2026 snapshot (€135.35 vs €150.40), with milder YTD appreciation than the all-CORC index.
- Levels change — re-pull before investment or offtake decisions.
Vault market overview: Market Volumes and Pricing
Durable-credit framing: Puro CORC200+ · Biochar as Durable CDR
Deal structures
From deep-dive / public Puro materials:
| Structure | Description |
|---|---|
| Spot | Certified inventory via Puro platform |
| Multi-year offtakes | Firm + optional volumes; retirement-fee waiver if offtake reported in MyPuro and spans >1 calendar year |
| Direct supplier–buyer contracts | Suppliers keep commercial control; Puro is certification / registry infrastructure, not the exclusive broker of all tonnes |
Retirement fee waiver (ops detail)
- Standard retirement fee: €0.25 / CORC
- Waivable for qualifying multi-year offtakes when reported in MyPuro with delivery spanning more than one calendar year
- Secondary trading fee: 0%
Full fee table: section below · journey: Puro Project Cycle and MRV
Supplier fee model (public)
Source: puro.earth/certified-carbon-credits/fees
| Item | Amount |
|---|---|
| Annual account fee | €1,400 / 12 months |
| Service fee (volume tiers) | €10.00 → €0.40 per CORC by trailing 12-month volume |
| Example mid/low tier (deep dive) | 1,001–2,000 CORCs → €10.00; ≥9M → €0.40 |
| Low-volume audits (≤≈1,000 CORC) | €12,000 flat when audit booked |
| Biochar verification-complexity premium | 0% |
| Retirement | €0.25 / CORC (offtake waiver possible) |
| Secondary trading | 0% |
| Pooling admin | €2,000 / facility / year if pooling |
| Issuance-time payment discount | 5% off service fee if paid at issuance |
Cost narrative vs verification
- Puro allocates VVBs and, per fees page narrative, covers verification costs.
- Suppliers pay annual + volume service fees (and retirement unless waived).
- VVB commercial fees are negotiated by Puro (framework or quote); suppliers do not pick auditors from a public shop list.
Auditor allocation: Puro Project Cycle and MRV · Puro vs Other Standards
Buyers and volumes (Puro-relevant, from report)
See also Buyers and Offtakes · CDR.fyi Biochar Snapshot 2025.
Documented Puro CORC linkage
- Microsoft: early CORC procurements from Carbofex, Carbon Cycle, Freres/ACT, ECHO2 (Puro Microsoft post); later large BCR offtakes (e.g., Exomad Green 1.24 Mt) are industry-leading and often Puro/dMRV-linked in secondary coverage — confirm project registry pages for each deal before citing as Puro-only.
- SEB, Swiss Re, Nasdaq, BCG, JPMorgan, Google appear among top BCR purchasers in CDR.fyi Snapshot 2025; SEB explicitly partners with Puro for CORC neutralization narrative in that snapshot.
Registry / liquidity scale
| Metric | Value | As-of / source |
|---|---|---|
| Issued CORCs (all methods) | ~1.88M | registry 2026-09-14 |
| Retired CORCs | ~1.08M | registry |
| Certified projects | 119 | registry |
| Biochar projects since 2019 | 70+ | Puro permanence post |
| Issuance→transfer/retirement time (biochar CORCs) | 95 days (2021) → 22 days (mid-2025) | CDR.fyi citing Puro Aug 2025 report |
Liquidity improvement is a notable market-structure finding: biochar CORCs are turning over faster on the Puro stack than early-market baselines.
Marketing claims (Puro): 600+ buyers; 74% share of delivered CDR — treat as claims; verify against registry and CDR.fyi for diligence (Puro.earth Overview · Risks and Controversies).
How CORCCHAR relates to other vault price notes
| Question | Where to look |
|---|---|
| Puro biochar index levels | This note |
| Cross-market BCR volumes / contracted vs delivered | Market Volumes and Pricing |
| Named offtakers and deal anecdotes | Buyers and Offtakes · Historical Deals |
| How to read CORCCHAR vs bilateral | Price Indexes and Benchmarks |
| Public supplier landscape | Supply Landscape |
| Whether CCP labels affect buyer preference / price | Puro vs Other Standards · Verra VM0044 · Risks and Controversies |
| What the credit claims (200+ years) | Puro CORC200+ · Permanence Science for Credits |
Do not treat CORCCHAR as a Verra VCU or Isometric/CSI clearing price. Different units, horizons, and issuance rules.
Pricing implications for producers (non-advice)
Observations grounded only in report facts:
- Public CORCCHAR discovery lowers information asymmetry vs purely bilateral BCR deals.
- Volume-tier service fees (€10 → €0.40) create strong scale incentives; low-volume audits face the €12,000 flat path.
- Multi-year offtakes can remove the €0.25 retirement fee if properly reported.
- Liquidity (22-day mid-2025 cycle time) may matter as much as headline €/t for working-capital planning.
- Buyers wanting CCP methodology labels today may still route demand to Verra VM0044 until Puro biochar is CCP-Approved — a price/segmentation risk, not a fee-table item.
Not legal, accounting, or investment advice. Fees and indexes change.
Primary citations
- CORC indexes
- Fees / supplier journey
- CORC page
- Registry
- Microsoft CORC post
- CDR.fyi Biochar Snapshot 2025
- Nasdaq stake announcement
Also: Key Sources
See also
Puro CORC200+ · Puro.earth Overview · Puro Biochar Methodology Edition 2025 · Puro Project Cycle and MRV · Puro vs Other Standards · Market Volumes and Pricing · Buyers and Offtakes · Price Indexes and Benchmarks · Historical Deals · Durable CDR Quality Tiers · Biochar as Durable CDR · Risks and Controversies · Verra VM0044 · Isometric Biochar Protocol · CSI Global Biochar C-Sink · Carbon Markets Hub · Key Sources