Biogas Plant in Sindelfingen Begins Operation

In March, the Sindelfingen municipal utility company commissioned a new plant for upgrading biogas to biomethane. Located on the site of the former district landfill near Stuttgart, the plant will process raw biogas from a fermentation plant in Leonberg into feed-in biomethane suitable for grid injection. The project is part of an inter-municipal initiative to utilize organic waste from the surrounding districts and aims to gradually replace fossil natural gas and strengthen the regional energy supply.

According to the project partners, the raw biogas is processed using membrane technology to achieve a methane purity of over 97 percent. This will allow approximately 40,000 megawatt-hours of renewable energy to be fed into the natural gas grid annually. Additionally, the carbon dioxide (CO₂) produced during the upgrading process will be captured and marketed as a food-grade resource.

The districts of Böblingen and Esslingen, as well as the city of Sindelfingen, are participating in the project. The total investment for the fermentation plant and biogas upgrading facility amounts to approximately €54 million. Together, the plants are expected to save around 18,000 tons of CO₂ annually.

From the perspective of those involved in the project, the plant strengthens energy sovereignty, as organic waste is collected, processed, and used for energy generation regionally. This ensures that the added value remains in the region, while simultaneously reducing dependence on energy imports.

At the commissioning ceremony, Managing Director Dr. Karl Peter Hoffmann explained that the biomethane produced replaces fossil natural gas and will be used primarily for climate-friendly district heating. This will significantly increase the share of renewable energies and improve the security of supply for local households.