The new biogas plant in Steinach in the canton of St. Gallen in Switzerland has opened its doors. Since 2023, it has served as a pioneering facility for sustainable energy production from biomass. Every year, around 4,000 tons of green waste and crop residues are not only processed, but transformed into a valuable source of energy.
From organic waste to biogas
The plant is characterized by its fermenters, in which the biomass undergoes a dwell time of 21 to 27 days. During this process, the organic material is broken down under anaerobic conditions, producing 345,000 Nm³ of biogas. This biogas consists of 53% methane (CH₄), a potent source of energy that is converted into electrical and thermal energy in a combined heat and power plant. The resulting energy output is 94 kWel for electricity and 95 kWth for heat.
The energy generated is fed into the local electricity and heating grid, helping to supply the community with renewable energy while reducing dependence on fossil fuels.
Local cycles and environmental protection
The biogas plant in Steinach is more than just a power plant; it is a flagship for ecological recycling management. Through its integration into an existing composting plant, it promotes the closing of material cycles and enables the efficient use of local resources.
Another advantage of the plant is its function as a supplier of fertilizer for agriculture and gardeners. The fermentation residue from biogas production is used as a high-quality fertilizer, which helps to improve the soil and ensure healthy plant growth conditions.
The biogas plant in Steinach is an outstanding example of how modern technology and environmentally conscious action can work together successfully in practice. It illustrates the effectiveness of the sustainable use of organic waste for energy production and environmental protection. With every step we take towards more sustainable energy sources, we are helping to preserve our planet and shape a greener future for generations to come.