GLEC Emission Calculation Software

GLEC calculation software is a fundamental component of sustainability strategies that enables the measurement and reporting of carbon emissions occurring in the global supply chain. The GLEC calculation software ensures that emissions originating from transportation or logistics are calculated in accordance with global standards and digitalizes carbon management processes. Calculating emissions from logistics activities accurately and in compliance with standards provides a competitive advantage in cost and export processes.

GLEC is an international standard developed for calculating greenhouse gas emissions resulting from logistics activities. Within this scope, it enables the comparable calculation of indirect emissions from road, sea, and rail transport.

The GLEC method helps companies gain a common language in reporting supply chain emissions. Thanks to this standardized approach, logistics-based carbon emissions become comparable, auditable, and traceable.

With GLEC calculation software:

• Carbon emissions originating from transportation are calculated.
• Different logistics activities are analyzed through a single platform.
• Reporting of Scope 3 logistics emissions is simplified.
• Data is generated for corporate sustainability reports.
• Compliance with international reporting requirements such as CBAM (SKDM) is ensured.

In calculation methods where digitalization is not involved, human-induced data errors and inconsistencies can occur, especially in supply chains featuring multiple logistics modes. To prevent these errors and ensure the process proceeds automatically from a single source, digital calculation tools should be preferred. Digital GLEC software makes sustainability performance measurable by combining advantages such as:

• Automated data collection.
• Emission factor integration.
• Continuous monitoring.
• Real-time reporting.

Emission calculation software compliant with the GLEC method ensures that greenhouse gas emissions caused by logistics activities are calculated comparably and in accordance with standards. This process provides end-to-end carbon management, encompassing all stages from data collection to reporting.

1. Determining organizational boundaries: Defines which logistics activities of the company will be included in the Scope 3 supply chain process calculations.
2. Defining logistics processes and transport modes: Transport types such as road, sea, air, or rail, as well as vehicle types, distances, and cargo amounts, are automatically classified.
3. Collecting activity data: All components of the emission calculation, such as fuel consumption, tons per kilometer, and route information, are gathered.
4. Selecting appropriate emission factors: This gains speed as the software integrates with international data sets.
5. Calculating logistics emissions: Values for $CO_2$, $CH_4$, $N_2O$, and $CO_2e$ are calculated using algorithms compliant with the GLEC method.
6. Disaggregation of Scope 3 logistics emissions: Ensures the calculated emissions are distributed as upstream and downstream.
7. Reporting: A standardized report compliant with the GLEC method is created.
8. Analysis of reduction and improvement opportunities: Evaluates new opportunities for modal shifts, alternative fuels, or route optimization.

GLEC-based emission calculation methods are a critical calculation tool for the carbon management of:

• Firms playing an active role in logistics and transportation activities.
• Industrial organizations involved in production and export.
• Companies engaged in retail and e-commerce.
• Organizations managing supply chains.

• Form the data infrastructure for CBAM reporting.
• Provide analysis of carbon cost risks.

Increase supply chain transparency.

Through GLEC-based digital systems:

• Traceability of the carbon footprint is ensured.
• Energy and fuel efficiency opportunities are identified.
• KPIs within the framework of sustainability are defined.
• Corporate ESG scores are improved.