Large scale biogas plant Sugar plants have seasonal working mode (90-120 days). Taking into consideration this factor biogas equipment can be used in two seasons working mode. During sugar plant operational period biogas plant recycles sugar beet pulp and molasses and the rest of time it can recycle other waste products or energy crops like corn silage and sugar beet tops. Biogas can be used for vehicle fueling or accumulated for technological purposes as sugar plants gas consumption is very high. Using such mode biogas plant can be operated without standstills and new start-up. As a rule sugar plants solve their waste problems by producing dry feed. Such production is energy consumptive and economically unfeasible. Biogas and bio-fertilizer production is more attractive in that respect. Plant energy demand can be covered at waste product expense. Bio-fertilizer can be used for soil enrichment and crop yield increase. Biogas yield: Substrate Biogas yield m3/t Sugar beet pulp 50 Molasses 430 Sugar beet tops 400 Corn silage 400