The energetic exploitation of the regrowing primary product wood is nowadays an important part of renewable energies. This energy source is more and more enquired, especially in form of wood pellets, and produced in an appropriately large quantity. However, the production processes, such as the disintegration and drying of the wood as well as the pressing to pellets, hold various risks of fire. Sparks, glowing embers or particles, generated in different plant areas, can easily cause serious fire and explosions. A GreCon spark extinguishing system significantly increases the safety and protection of the production facilities. It detects sparks in time and automatically extinguishes them – and has done so successfully for more than 40 years.