Global Fossil Fuel Emissions to Hit Record 38.1 Billion Tons in 2025

Global fossil fuel emissions are projected to reach a record high in 2025, rising 1.1 percent from the previous year to 38.1 billion metric tons of carbon dioxide, according to the annual Global Carbon Budget report released Thursday by an international team of more than 130 scientists. The findings, published during the COP30 climate talks in Belem, Brazil, indicate that the remaining carbon budget to limit warming to 1.5 degrees Celsius above preindustrial levels has dwindled to about 170 billion metric tons, equivalent to roughly four years of current emissions, making the Paris Agreement target effectively unattainable.

The report attributes the increase to sustained growth in energy demand outpacing the expansion of renewable energy sources. Emissions from coal are expected to rise 0.8 percent, oil by 1 percent, and natural gas by 1.3 percent. International aviation emissions are forecast to surge 6.8 percent, while shipping remains stable. Total global CO2 emissions, including those from land-use changes like deforestation, are projected at 42.2 billion metric tons, a slight decline from 2024 largely due to reduced deforestation and fires in South America following the...