Standardized Contracts

CXF contract specifications

Standardized specifications give buyers and sellers a common language for CXF waste-oil carbon credits — what one unit represents, how it is quantified, what evidence stands behind it, and how it settles. All CXF credits are desk-validated under the CXF Methodology.

CXF-CO · Collection CXF-RR · Re-refining CXF-FC · Full Chain

Important. CXF contract specifications are pilot-stage. Quantification follows the CXF Quantification Methodology v1.0-draft (August 2026) — CarbonXFuture's own internal methodology, EPA-governed on the credit side, published in full and pending independent GHG/LCA expert opinion. It supersedes the earlier ACR-derived interim factors (the ACR Feb 2019 methodology is inactive and ineligible for new projects; the reconciliation of all previously published figures is in §9 of the methodology). CXF contracts are bilateral, desk-settled instruments on the CarbonXFuture platform. They are not exchange-traded futures, not registered securities, and CXF platform credits are not registry credits (Verra, Gold Standard, ACR, CAR). Prices shown anywhere on this site are indicative desk marks. Nothing on this page is an offer or financial advice.

CXF Collection Credit

CXF-CO

Unit	1 tCO₂e avoided through verified collection of used lubricating oil, diverting it from improper disposal or uncontrolled burning.
Quantification	Default factor: 6.3 tCO₂ per 1,000 US gallons collected (1.66 per 1,000 litres) — CXF Quantification Methodology v1.0-draft, §4: EPA used-oil factor 10.21 kg CO₂/gal × (1 − 20% baseline-uncertainty deduction) − transport and processing debits. CO₂-only credit. Eligibility is strict (conditions E1–E4): documented evidence of a non-energy disposal-burning baseline, an energy-service test, weighbridge-ticketed delivery to a re-refinery, and one-volume-one-contract. Volumes diverted from energy-service burning or from dumping earn 0 GHG credits. Pending independent expert opinion.
Eligible activity	Licensed used-oil collectors operating in the United States with documented chain of custody from generator to storage/processing facility. CXF-CO quantifies eligible collection activity meeting conditions E1–E4 of the CXF Methodology §4 — it is separate from Module B, which addresses the creation or expansion of new collection infrastructure (concept stage, no factor published).
Vintage	Calendar month of physical collection, evidenced by weighbridge tickets or delivery receipts. Credits carry the year-month vintage of the underlying activity.
Evidence / MRV	Monthly activity report in the CXF member portal; weighbridge tickets, manifests or delivery receipts; operating license (state/FDEP); desk review of volumes against facility capacity.
Validation	Each report is individually reviewed and validated by the CarbonXFuture desk before credits are attributed and listed. Rejected or amended reports carry desk notes.
Settlement	Bilateral, via the CarbonXFuture desk. Payment against documentation; transfer recorded on the platform ledger and eligible for a numbered CXF retirement certificate on retirement.
Minimum lot	500 tCO₂e (indicative; smaller lots at desk discretion).

CXF Re-refining Credit

CXF-RR

Unit	1 tCO₂e avoided through re-refining of used oil into base oil, quantified as displacement of virgin base-oil production (CXF Methodology v1.0-draft, §5).
Quantification	Tier 1 default: 0.60 tCO₂e per 1,000 US gallons processed (0.16 per 1,000 litres); Tier 2 (measured facility data): up to ≈1.3 tCO₂e — CXF Quantification Methodology v1.0-draft, §5: displacement of virgin base-oil production (M_rr × (CI_v − CI_rr) − transport) × (1 − uncertainty deduction), all parameters at credit-minimizing ends. HBP additionality guard: existing facilities credit only production above their 3-year historical maximum. Pending independent expert opinion.
Eligible activity	Permitted re-refineries processing used lubricating oil into Group I/II/III base oils, with EPA/state authorization and documented input-output balances.
Vintage	Calendar month of processing. Forward vintages (pre-operational facilities) may be listed as forward offers, clearly labelled, and settle only upon actual production.
Evidence / MRV	Monthly volumes via the member portal; input receipts and production logs; facility permits; lab certificates where applicable; desk cross-check against nameplate capacity.
Validation	Desk-validated per report. Pre-operational projects additionally undergo dossier review (engineering, permits, financing) before any forward listing.
Settlement	Bilateral via the desk. Spot: payment against documentation. Forward: staged delivery-versus-payment per contract schedule; no funds are pooled or held by CarbonXFuture beyond agreed escrow terms.
Minimum lot	1,000 tCO₂e spot · 10,000 tCO₂e/yr forward (indicative).

CXF Full Chain Credit

CXF-FC

Unit	1 tCO₂e avoided across the full circular chain: collection, re-refining and distribution of finished re-refined products back to market.
Quantification	Not offered. A full-chain contract would double count CXF-CO and CXF-RR for the same physical volume (CXF Methodology v1.0-draft, §8). No CXF-FC factor is published and no CXF-FC credits are offered or issued; the decision and its reason are public.
Eligible activity	Vertically integrated operators (or documented consortia) covering collection through distribution, with chain-of-custody at each step.
Vintage	Calendar month of final distribution.
Evidence / MRV	All CXF-RR evidence plus distribution records (sales invoices, shipping documents) demonstrating finished product returned to market.
Validation	Desk-validated per report, with annual review of the operator's full-chain documentation.
Settlement	Bilateral via the desk, as for CXF-RR.
Minimum lot	1,000 tCO₂e (indicative).

Questions about a specification, or need a bespoke structure (multi-year offtake, portfolio mix)? Write to desk@carbonxfuture.com or submit an RFQ from the marketplace.