Goods and services and their consumption account for a a major share in overall GHG emissions. Gaining a better understanding of these emissions as well as of pathways for their reduction is or premier importance -- in the supply chain as well as with consumers. The Product Carbon Footprint (PCF) Project develops approaches for systematically assessing and communicating implemented and intended emission reductions. Participating companies jointly support the promotion of climate compatible consumption. Common international standards for the assessment and communication of product related carbon emissions are sought.