Timber construction is active climate protection, because wood stores climate-impacting_CO2 over its entire useful life and building with wood generates significantly less grey energy than building with conventional building materials. If the raw material also comes from regional, sustainably managed forests, this further reduces the_CO2 footprint. A third pillar for sustainable management with wood is offered to companies active in timber construction and wood glue production through the energetic utilisation of the wood residues produced in production as well as chips, sawdust and sanding dust. Instead of expensive disposal, all or part of the heat for the workshop, buildings and drying plants is provided for free - and only the same amount of_CO2 is released that the wood had previously taken from the environment and stored.