Summary/Abstract
The document discusses the methodology and findings of a study aimed at estimating the global carbon footprint of the oil refining and petroleum products sales sectors. It assesses the lifecycle greenhouse gas emissions of the six largest publicly traded oil companies, known as the “Oil Supermajors,” over a period from 1980 to 2019. The study utilizes a combination of quantitative methods and open-source models to calculate country-specific emission factors and the overall impact of these sectors on climate change. The findings highlight the significant contributions of the oil supermajors to global carbon emissions and suggest the need for transparent and standardized carbon accounting.