A method for producing solid fuel from biomass, comprising the steps of: a) feeding shredded biomass to a first water bath for washing out water-soluble plant compounds and for separating sand introduced with the biomass into the water bath by means of sedimentation (step 30), b) transferring the biomass depleted of sand and water-soluble plant compounds to a second water bath (step 50), c) dewatering the biomass to obtain an extract containing water-soluble and waterinsoluble plant compounds and a press cake de-riched by the extract (step 80), and d) drying and compression moulding the press cake into solid fuel (step 90), wherein - the biomass depleted of sand and water-soluble plant compounds in step a) is dehydrated to a moisture content of 50% to 70% before step b) (step 40), - the biomass transferred in step b) is removed from the second water bath before step c), dewatered (step 60) and rinsed with a rinsing liquid (step 70), - the rinsing liquid obtained after rinsing, with the water-soluble plant compounds contained therein, is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity, and - the extract obtained in step c) is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity. a) feeding shredded biomass to a first water bath for washing out water-soluble plant compounds and for separating sand introduced with the biomass into the water bath by means of sedimentation (step 30), b) transferring the biomass depleted of sand and water-soluble plant compounds to a second water bath (step 50), c) dewatering the biomass to obtain an extract containing water-soluble and waterinsoluble plant compounds and a press cake de-riched by the extract (step 80), and d) drying and compression moulding the press cake into solid fuel (step 90), wherein - the biomass depleted of sand and water-soluble plant compounds in step a) is dehydrated to a moisture content of 50% to 70% before step b) (step 40), - the biomass transferred in step b) is removed from the second water bath before step c), dewatered (step 60) and rinsed with a rinsing liquid (step 70), - the rinsing liquid obtained after rinsing, with the water-soluble plant compounds contained therein, is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity, and - the extract obtained in step c) is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity. - the biomass depleted of sand and water-soluble plant compounds in step a) is dehydrated to a moisture content of 50% to 70% before step b) (step 40), - the biomass transferred in step b) is removed from the second water bath before step c), dewatered (step 60) and rinsed with a rinsing liquid (step 70), - the rinsing liquid obtained after rinsing, with the water-soluble plant compounds contained therein, is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity, and - the extract obtained in step c) is returned in countercurrent to the biomass through the second water bath into the first water bath, is harvested there and is utilised energetically by fermentation and conversion of the biogas thus obtained into electricity. <EOS>