Climate Change Mitigation
Mitigation means reducing or preventing the emission of greenhouse gases to limit the magnitude of future climate change. It targets the root causes — our energy systems, land use, industry, and consumption patterns — and is the foundation of long-term climate stability.
What is Climate Mitigation?
Climate mitigation refers to actions that reduce the flow of greenhouse gases (GHGs) into the atmosphere or enhance the absorption of carbon from it. The primary driver of anthropogenic climate change is the burning of fossil fuels for energy, which accounts for around 75% of global GHG emissions.
Rapid, deep, and sustained reductions across all sectors are required to limit global warming to 1.5°C above pre-industrial levels — the threshold beyond which climate impacts become far more severe and widespread. The IPCC's Sixth Assessment Report finds that global emissions must peak before 2025 and be cut roughly 43% by 2030.
Global target: Reach net-zero CO₂ emissions by around 2050 to limit warming to 1.5°C. This requires transformation across energy, transport, buildings, industry, land use, and urban systems — simultaneously.
Pathways to Mitigation
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1
Decarbonise the Electricity Grid Rapidly scale solar, wind, and other renewables while phasing out coal, oil, and gas-fired power generation. Electrifying other sectors (transport, heating) multiplies the impact of a clean grid.
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2
Electrify Transport Transition road vehicles to electric power, invest in public transit, active travel infrastructure, and — where possible — decarbonise shipping and aviation with green fuels and efficiency.
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3
Improve Energy Efficiency Upgrade buildings, industrial processes, and appliances to use far less energy. Deep retrofits of existing housing stock are among the most cost-effective mitigation options available.
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4
Protect & Restore Forests Halt deforestation and restore degraded forests and ecosystems to maintain and enhance natural carbon sinks. Land-use change is responsible for about 10–12% of global emissions.
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5
Decarbonise Industry & Agriculture Address hard-to-abate sectors including steel, cement, and chemicals through green hydrogen, electrification, and process innovation. Reduce methane from livestock and rice cultivation.
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Scale Carbon Removal Deploy carbon dioxide removal (CDR) technologies and practices — including afforestation, biochar, direct air capture, and enhanced weathering — to offset residual emissions in a net-zero world.
Mitigation by Sector
Energy
Renewables now provide over 30% of global electricity. Solar PV costs fell 90% between 2010 and 2023, making clean energy the cheapest power source in history.
Transport
EVs reached 18% of global new car sales in 2023. Electrification of buses, trains, and two-wheelers is accelerating in many markets.
Buildings
Passive design, insulation, heat pumps, and net-zero building codes can cut building emissions by up to 80% while improving health and comfort outcomes.
Industry
Steel, cement, and chemicals represent ~22% of global emissions. Green hydrogen and electrification offer the most promising deep-decarbonisation pathways.
Land & Agriculture
Sustainable land management, reduced food waste, and dietary shifts toward plant-rich diets could provide up to 30% of needed mitigation this decade.
Blue Carbon
Coastal ecosystems — mangroves, seagrasses, saltmarshes — store carbon at rates up to 5× higher than tropical forests and protect shorelines from storms.
Carbon Pricing & Policy Mechanisms
Economic instruments can accelerate mitigation by making emissions costly and clean alternatives financially competitive. Carbon taxes place a direct price on GHG emissions, while emissions trading schemes (ETS) cap total emissions and allow permits to be bought and sold.
As of 2024, 73 carbon pricing instruments are in operation globally — covering about 23% of global GHG emissions. Effective carbon prices (above US$50–100/tCO₂) are needed to drive the pace of transition required, but most existing prices remain below this level.
Just Transition: Mitigation must be pursued in a way that is fair and equitable. Workers and communities in fossil fuel industries need support through retraining, economic diversification, and social protection as the energy transition unfolds.
Individual & Community Action
While systemic change drives the largest emissions reductions, individual and community behaviour plays a meaningful role. High-impact personal actions include shifting to a plant-rich diet, reducing air travel, living car-free or driving an EV, and making energy-efficient choices at home.
Collectively, citizen pressure on governments and businesses, community-scale renewable projects, and local food systems can shift cultural norms and accelerate the political will needed for transformative policy. Every fraction of a degree of warming avoided matters.