Denmark has opened the world's largest carbon capture plant. It is on the coast of western Denmark. The plant started working in March 2026. Its name is Mammoth Nordic.
The plant removes carbon dioxide (COโ) from the air. COโ is a gas that causes climate change. Mammoth Nordic can remove 72,000 metric tons of COโ every year. This is like taking 15,000 cars off the road. A Swiss-Danish company called Climeworks Scandinavia built the plant.
How does it work? Big fans pull air into the plant. Special filters catch the COโ. Then the plant heats the filters to collect the COโ. The COโ travels through underground pipes. It goes 1,800 meters under the sea into rock. Over about two years, it slowly turns into stone. The plant uses wind energy, so it produces very little COโ itself.
Some people are not happy about the plant. Groups like Greenpeace Nordic say it could give oil and gas companies an excuse to keep polluting. Dr. Lena Sรธrensen from Aarhus University said: "Carbon removal is not a substitute for reducing emissions. It should help with difficult sectors like aviation, cement, and farming."
The plant cost โฌ1.3 billion to build. The EU gave โฌ150 million. The Danish government gave โฌ200 million. Private investors gave the rest. The IEA says the world needs to remove 5โ10 gigatons of COโ per year by 2050 to limit warming to 1.5ยฐC. Denmark already gets over 80% of its electricity from renewable energy.