This third level has been the economic growth engine especially in Finland and Sweden for the past six decades, but is now decreasing in importance due to the ongoing large-scale restructuring of the industry (new pulp and paper facilities being built in the global south rather than north) and digitalization of societies worldwide. One increasingly important business level is renewable energy that is produced from the residues of levels 2, 3 and 4. Both solid biomass (e.g. wood chips and pellets) and liquids (e.g. bio-oil) are used as raw material for bioenergy. This level breaks the confines of traditional industry sectors and makes them part of a larger biobusiness sector.