Twenty solar collectors connected to Bävergläntan’s wood-chip fired furnace, which provides heat and electricity to both the property and other industrial businesses A few years ago, the oil was replaced by a woodchip fired furnace. Now the wood-fired heating is supplemented with solar energy, primarily during the summer when the furnace is expensive to keep running. The purchaser for the system is Bävergläntans Fastighets in Smedjebacken, in Dalarna province, in Sweden.