The symposium at the HSZG impressively demonstrated how great the innovation potential of the energetic use of renewable raw materials is - and how important the exchange between science, practice and politics remains for a sustainable energy future.
The 28th symposium "Use of Renewable Resources: Biomass - Heat - Power" attracted almost 80 experts from science, industry, practice and administration to Zittau/Görlitz University of Applied Sciences on May 22 and 23, 2025. The focus was on the energetic use of solid biomass as a central building block for the energy transition and a sustainable energy future. The event was characterized by an exciting and lively atmosphere as well as a very intensive professional exchange. The entire process chain was examined - from the cultivation and preparation of biomass to innovative conversion processes and the use of residues. A particular focus was placed on the thermochemical gasification of solid biomass, new concepts for municipal heating networks and the efficient utilization of residues.
The welcoming address by the Saxon State Minister for the Environment and Agriculture, Georg-Ludwig von Breitenbuch, emphasized the importance of sustainable wood use for climate protection. In a panel discussion, representatives from ministries, research and industry discussed the current biomass strategy and the role of bioenergy in the future energy supply.
Among other things, new combined heat and power technologies with fuel gas production were presented, which enable flexible and climate-friendly electricity and heat generation from regional biomass. Participants were given an insight into advanced systems that can be used to generate CO₂-neutral electricity, heat and even biochar for soil improvement from wood pellets or wood chips.
One highlight was the excursion to a modern wood gasification CHP plant at Zittau Hospital, where participants were able to experience the practical implementation of innovative energy technology first-hand: Using CO2-neutral wood pellets as fuel, a large proportion of the hospital's heating requirements and, above all, its electricity needs can be covered. The newly designed energy center and the kitchen were also visited.
The lively discussions during the event made it clear that the energetic use of biomass is not a niche topic, but a crucial component of a sustainable energy supply. In particular, the efficient use of regional resources and the involvement of committed specialists are key factors for success. At the same time, it was emphasized that the available biomass resources are limited and that particularly efficient and effective technologies should therefore be developed as a priority.
The response to the conference was consistently positive. The event provided a platform for the exchange of the latest scientific findings, technical innovations and practical experience. Next year, the 29th symposium will take place in Dresden as scheduled. The focus will then increasingly be on the material use of renewable raw materials.
