FolkCarbon methodology — calculation transparency
This page explains how the ratio shown on our B2B invoices is calculated, which sources we use and what limitations apply.
Reference ratio
≈ 35.7 t CO₂
attributed per 1,000 L argan oil (920 kg)
5.11 ha of arganeraie mobilised · Arganeraie Biosphere Reserve (RBA, UNESCO) · attributed sequestration — not certified to date
Methodology version : FolkCarbon Official Final — DARED/INRA-Agadir 2025 (n=89)
Last revised : 11 July 2026
Calculation formula
tCO₂ = (litres × 0.920 ÷ yield kg/ha) × sequestration tCO₂/ha
Documented example: 1,000 L × 0.920 ÷ 180 × 6.98 ≈ 35.68 tCO₂ (direct measurements DARED/INRA-Agadir 2025, n=89).
Scope
- ✓Arganeraie Biosphere Reserve (RBA), Souss-Massa, Morocco
- ✓Measured biomass + soil sequestration (coefficient 6.98 tCO₂/ha)
- ✓Reference yield 180 kg/ha (DARED/INRA field data)
- ✓Out of scope: downstream client transport, packaging, finished product use
Assumptions & limitations
- •Argan reference yield: 180 kg/ha (DARED/INRA-Agadir 2025 measurements)
- •Argan oil density: 0.920 kg/L
- •Sequestration coefficient: 6.98 tCO₂/ha (measured biomass + soil, n=89)
- •Attribution documented on invoice — not a certified carbon credit (VCS/Verra in preparation, target 2027–2028)
- •Annual parameter update planned with INRA
Calculation steps (simplified)
1. Ordered volume
Litres of argan oil on the B2B invoice (e.g. 1,000 L).
2. Mass
Litres × 0.920 = kg of oil (e.g. 920 kg).
3. Equivalent area
Mass ÷ 180 kg/ha yield → hectares mobilised (e.g. ≈ 5.11 ha).
4. Attributed tCO₂
Hectares × 6.98 tCO₂/ha → ≈ 35.68 t (display ≈ 35.7 t) + carbon-market premium.
Sources & references
- DARED / INRA-CRRA-Agadir 2025 — n=89 direct measurements (argan allometry)
- NEXT-FAO Souss-Massa 2024 — argan sector scenarios
- ANDZOA — official argan forest carbon stocks
- GHG Protocol — GHG accounting framework
- EU CRCF — Regulation (EU) 2024/3012
Integrate FolkCarbon into your purchasing
Request a carbon attestation and calculation breakdown for your next order.