Global CO2 emissions 2018-2050

Based on a business-as-usual trend, global carbon dioxide emissions are forecast to increase to some 43.08 billion metric tons in 2050, in comparison to 35.3 billion metric tons of carbon dioxide in 2018. Carbon dioxide emissions reached its highest level in 2018 due to a strong economy and extreme weather conditions. Summers with heatwaves push air conditioning usage and harsher winters lead to more heating. A booming economy has a greater thirst for energy than one that is struggling or even in recession.

Energy-related emissions

The energy sector is one of the largest contributors to carbon dioxide emissions. Carbon dioxide is one of the primary gases that are emitted through burning fossil fuels. However, other emissions like sulfur dioxide, nitrogen oxides, and particulates may also be emitted, especially through burning coal. New coal plants in Asia have also pushed the growth in energy-related emissions. China is one of the largest emitters of energy-related emissions in the world. Despite the country’s move towards renewable energy sources, coal-fueled power still dominates its energy market. Despite efforts to reduce fossil fuel combustion, energy demand has still increased over recent years.

Forecast of carbon dioxide emissions worldwide from 2018 to 2050

Emissions in billion metric tons
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Release date

September 2019



Survey time period


Supplementary notes

* Projections in the EIA reference case, a business-as-usual trend estimate, given known technology and technological and demographic trends.

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Statistics on "Global climate change"

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