This Protocol provides requirements and guidance for cities on preparing and publicly reporting a GHG emission inventory. The primary goal is to provide a standardized step-by-step approach to help cities quantify their GHG emissions in order to manage and reduce their GHG impacts.

The Global Protocol for Community-Scale Greenhouse Gas Emissions (GPC) is a multi-stakeholder, consensus-based protocol for developing internationally recognized and accepted community-scale greenhouse gas accounting and reporting standards.