The Greenhouse Gas Protocol (GHG Protocol) is the most widely used international accounting tool for government and business leaders to understand, quantify and manage greenhouse gas emissions.

It serves as the foundation for nearly every GHG standard and program in the world-from the International Standards Organization to The Climate Registry-as well as hundreds of GHG inventories prepared by individual companies.

The result of a decade-long partnership together with the World Resources Institute (WRI), the GHG Protocol helps businesses, governments and environmental groups around the world to build a new generation of credible and effective programs to tackle climate change.