Carbon Majors is a database of historical production data from 178 of the world’s largest oil, gas, coal, and cement producers. This data is used to quantify the direct operational emissions and emissions from the combustion of marketed products that can be attributed to these entities. These entities include:
The data spans back to 1854 and contains over 1.44 trillion tonnes of CO2e covering 70% of global fossil fuel and cement emissions since the start of the Industrial Revolution in 1751.
This graph shows the top 10 companies in the Carbon Majors database, ranked by cumulative historical emissions. Percentages indicate each company’s share of total global fossil fuel and cement emissions.

This map shows selected legal actions, regulatory initiatives, and human rights proceedings worldwide that cite the Carbon Majors database.
