Climate change

The energy sector is central to efforts to combat climate change

Promoting sustainable development and combating climate change have become integral aspects of energy planning, analysis and policy making. Energy accounts for two-thirds of total greenhouse gas, so efforts to reduce emissions and mitigate climate change must include the energy sector.

Key findings

Global energy-related CO2 emissions, 1990-2021

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CO2 emissions are expected to rebound strongly in 2021

Global CO2 emissions declined by 5.8% in 2020, or almost 2 Gt CO2 – the largest ever decline and almost five times greater than the 2009 decline that followed the global financial crisis.

In 2021 global energy-related CO2 emissions are projected to rebound and grow by 4.8% as demand for coal, oil and gas rebounds with the economy. The increase of over 1 500 Mt CO2 would be the largest single increase since the carbon-intensive economic recovery from the global financial crisis more than a decade ago.