As the demand for alternative and renewable energy sources has grown, the wood pellet industry has emerged as a significant player in the global energy market. In recent years, fiber optic linear heat detection (FO LHD) technology has become a game-changer by providing an advanced and reliable solution for detecting and preventing hotspots and fires. Protection against fire may not be the primary concern with wood pellets themselves. Nevertheless, operators and users of biomass plants and wood pellet-burning points must ensure the operational safety of their plants, also in terms of fire protection and early fire detection. The production and storage of wood pellets are associated with risks, including the potential for fires. The use of FO LHD technology can mitigate these risks, providing an effective way to monitor temperature changes and detect fires before they become a hazard.