When you start calculating your organization's carbon footprint, do so according to the Greenhouse Gas Protocol – Corporate Standard. This is the main source of accounting principles, rules, and definitions. It also includes many helpful examples and best practices. The document is especially useful for the following steps:
This document is publicly available on www.ghgprotocol.or
This document provides an overview of all the questions we ask our suppliers who report through Impact Buying.
The CDP Climate Change Guidance explains how to answer questions, the format required, and where to find resources or more information to craft your response.
This document is publicly available on www.cdp.net

This user guide explains how to complete the ImpactBuying climate reporting tool.
