How does it work?
The liquid carbon dioxide is transported refrigerated to its final storage location, currently planned to be the North Sea, some 3 km below the seabed. The carbon dioxide will be mineralised naturally, eventually becoming part of the bedrock. This reduces the atmospheric carbon dioxide level and results in a negative emission.
By rail and then by ship. The lack of a port near Växjö is a challenge in itself. We are currently looking into how we can manage the transport and storage aspects in the most efficient and sustainable ways possible. The rail transport will require close collaboration with the Swedish Transport Administration, and it will also require a siding so that freight trains can stop at Sandviksverket to collect the carbon dioxide. We are also in discussions with Danish and Norwegian stakeholders to secure a well-working delivery chain all the way to the North Sea.
Biofuel in the shape of residual products from the forest that would otherwise go to waste is delivered to Växjö Energi, where its bioenergy is extracted in the shape of renewable electricity and heat. The carbon dioxide formed during production is separated from the flue gases and compressed into liquid form. The liquid carbon dioxide is then transported to a tried-and-tested location for permanent storage and, in the longer term, petrification into various limestone minerals. The planned location is the North Sea and the bedrock, some 2–3 km below sea level. This reduces the atmospheric carbon dioxide level and results in a negative emission.