The co- or polygeneration benefits of energy products from a system vary and depends on several factors including how each individual product is otherwise produced and used. In a Nordic renewable based energy system, district heating system using woody biomass could be used for the production of several products and for the integration of electricity, heat and transportation sectors. Energy-efficient systems for the production of different wood based energy services, including efficient end-use system, will reduce the need for woody biomass that could be used in other sectors with less other renewable alternatives including aviation, shipping and material production. However, the scale and the annual variation of heat demands for single district heating systems are key factors that influence co- or polygeneration benefits of such systems. In this study, we analyse district heating systems with annual heat demands between 100 to 1000 GWh. Several technical configurations of co- or polygeneration of heat, electricity and/or biomotor fuels are analyzed, considering different standalone production options, woody biomass fuel prices and integration costs of intermittent energy resources. The development of several state-of-the-art technologies shows that there are co- or polygeneration benefits in district heating systems. System configuration varies with the scales of district heat production as does the use of biomass to generate the same amount of products and both depend on the context of the overall energy system. Electric-based solution for transportation as well as electric-based option for small-scale district heating systems together with cogeneration of heat and electricity in larger district heating system reduce the use of biomass and help to integrate wind power in the overall energy system. Further studies are needed to understand how deep energy-renovation of buildings may influence the configuration of co- or polygeneration system in district heating systems and the potential saving of woody biomass.