Guidance for Suppliers on Scope 1 and 2 Emissions Calculation

This guide provides detailed instructions for suppliers on how to calculate Scope 1 and 2 emissions, which are critical for understanding a company's greenhouse gas (GHG) footprint. The document outlines a four-phase process for GHG accounting, including planning and preparation, data collection, data calculation and evaluation, and footprint monitoring and revising. Each phase includes specific steps such as determining the footprint team, setting organizational boundaries, and defining data collection methods. The guidance is based on the GHG Protocol and includes references to resources for data collection and emission factors. It emphasizes the importance of continuous improvement in data management and provides tools for both in-house and consultant-led approaches to emissions accounting. The document is adapted from the Supplier Leadership on Climate Transition program and aims to assist suppliers in aligning with corporate sustainability goals.