Carbon account methodology
Standards
We disclose greenhouse gas emissions (GHG) in accordance with the following Greenhouse Gas Protocol standards and guidance:
- A Corporate Accounting and Reporting Standard, Revised Version (2004)
- Corporate Value Chain (Scope 3) Accounting and Reporting Standard (2011)
- GHG Protocol Scope 2 Guidance (2015)
- Technical Guidance for Calculating Scope 3 Emissions, version 1.0 (2013)
Emission factors
We used emission factors from the following sources:
- Greenhouse Gas Protocol – Emission Factors for Cross Sector Tools V2.0_0
- Association of Swiss Electricity Companies – CO2 content of Switzerland’s electricity mix, 2025 results
Organizational boundaries
We are using the operational control approach for the entities described in Section 6 of the financial statement
Operational boundaries
We identified the following emission sources to be included in our carbon account:
Scope 1
- Fossil fuels used by company-owned equipment in production, for self-generated electricity, for transportation and travel with company-controlled vehicles
Scope 2
- Purchase of energy in Gabon, Switzerland and the Netherlands
Scope 3
- Travels with airplanes or personal cars
- Transportation with third-party vehicles
Memo items
- We chose 2010 as the base year due to data availability and quality.
- We report only CO2 emissions rather than all six GHGs separately for operational efficiency.
- CO2 emissions from the burning of wood residues in Brazil and Gabon amount to 110 579 tCO2. In accordance with the standards used, these biogenic emissions are recorded separately because they are neutralized with the carbon intake during forest growth.