Negative Emissions Technologies
Negative Emissions Technologies (NETs) refer to a range of methods and processes designed to remove carbon dioxide and other greenhouse gases from the atmosphere. These technologies aim to counteract climate change by actively reducing atmospheric carbon levels, rather than simply limiting emissions. Examples include direct air capture, bioenergy with carbon capture and storage (BECCS), afforestation, and enhanced weathering. NETs are considered essential for achieving net-zero emissions and limiting global temperature rise.
Negative Emissions Technologies
Negative Emissions Technologies (NETs) refer to a range of methods and processes designed to remove carbon dioxide and other greenhouse gases from the atmosphere. These technologies aim to counteract climate change by actively reducing atmospheric carbon levels, rather than simply limiting emissions. Examples include direct air capture, bioenergy with carbon capture and storage (BECCS), afforestation, and enhanced weathering. NETs are considered essential for achieving net-zero emissions and limiting global temperature rise.
💡 Key Takeaways
- Understand what Negative Emissions Technologies are and why they aim to remove CO2 from the air.
- Learn common NETs (e.g., afforestation/reforestation, bioenergy with CCS, direct air capture) and how they differ.
- Explore the main challenges: energy use, cost, land use, permanence, and governance.
- See how NETs fit into climate targets and how removal is measured in carbon accounting.
❓ Frequently Asked Questions
What are Negative Emissions Technologies (NETs)?
Technologies and practices designed to remove CO2 from the atmosphere, helping to reduce net atmospheric greenhouse gases alongside reducing emissions.
How does direct air capture (DAC) work?
DAC uses chemical processes to pull CO2 directly from ambient air, with the captured CO2 then stored underground or used in products.
What is BECCS (bioenergy with carbon capture and storage) and what are its trade-offs?
BECCS combines biomass energy production with CO2 capture and storage, aiming for net CO2 removal. It requires large amounts of land, water, and energy, and involves sustainability and cost considerations.
What are nature-based NETs and what are some caveats?
Nature-based NETs include afforestation/reforestation and soil carbon sequestration, which store CO2 through natural processes. They can provide co-benefits but face permanence, scalability, and measurement challenges.