The challenge: secure the rural idyll of Otternhagen of an efficient solution to support the local farms with clean, local energy. 145 hectares of corn and grass, and 120 cows form the supply. The digestate by-product can be used as high quality fertilizer for arable land. The main task of the system is a fast, efficient and sustainable heat supply for and from the Otterhagen livestock farm and the surrounding residences.
The heating circuit is a co-generation plant (CHP) which delivers a thermal output of 581 kW per day through the conversion of 2.500 cubic meters of biogas into heat and power. To ensure a trouble free production of heat all year long, the drive-way to this plant (that part of the system that “consumes” the substrates) is equipped with a biogas-powered floor heating. It prevents snow and ice on the drive-way, making an all year-round safe transport of substrates possible.