The Iran conflict’s energy shock is expected to help lower fossil-fuel carbon dioxide emissions in 2026, but researchers project the global total will rise once emissions from land-use changes are counted.
The Global Carbon Budget forecasts fossil-fuel CO2 emissions will fall 0.4% in 2026, reaching 38.2 billion metric tons. Oil-related emissions are projected to decline 1.9%, natural-gas emissions 0.3%, while coal-related emissions rise 0.6%. The project links the oil forecast partly to the energy shock from the war, alongside continued growth in clean energy. Oil shows the largest projected decline among the three fuels, while coal is the only one forecast to add emissions.
The regional outlook is uneven. The project forecasts India's fossil-fuel emissions will rise 4.4%. It projects declines of 1.3% in the United States and 1.5% in the European Union.
When land-use changes such as deforestation are included, global CO2 emissions are projected to reach 43.3 billion metric tons in 2026, up from 42.8 billion in 2025. The gap between the fossil-fuel forecast and the wider total was also covered in EconoTimes' earlier report on the 2026 emissions outlook.
The Global Carbon Budget estimates solar and wind power, together with electric vehicles, accounted for about two-thirds of the increase in global energy demand. Glen Peters, a research professor at the CICERO Center for International Climate Research, said a single year of lower emissions does not show that emissions have reached a lasting high point. He said a durable decline would require sustained changes to the energy system.
The fossil-fuel forecast remains uncertain, with the report's range extending from a 1.5% decline to a 0.6% increase. It also identifies the powerful 2026 El Niño as a factor expected to affect the land carbon sink in the coming year.
