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.