First open-space facility for Stuttgart municipal utilities
The project
At the beginning of April, Stadtwerke Stuttgart commissioned its first ground-mounted photovoltaic (PV) system in Baden-Württemberg. The solar power plant in Ahldorf near Horb am Neckar was developed by JUWI GmbH and constructed in the first months of 2025.
Supplying 5,200 households
The solar power plant, which was built east of the A81 federal highway in the district of Freudenstadt, covers an agricultural area of eleven hectares and is divided into two separate sections. For Martin Rau, Commercial Director of Stadtwerke Stuttgart, the acquisition from JUWI GmbH is money well spent with a view to the company's climate-neutral development. “We have invested several million euros in the open-space facility and can now supply around 5,200 households with green electricity.”
We acquired the plant in February 2025, thereby making a further contribution to the success of the energy transition in the region. The acquisition of the first large ground-mounted plant in Baden-Württemberg is an important step for us in supplying our customers entirely with our own green municipal electricity.
Climate-friendly energy supply
A total of more than 19,000 solar modules have been installed at the Ahldorf solar park, generating a huge amount of electricity; solar energy is also one of the cheapest forms of energy generation in Germany. The total output of the plant is just under 11.2 megawatts peak. The purely mathematical potential to supply around 5,200 households is based on an average annual consumption of 2,500 kilowatt hours. Calculated over twelve months, this results in a total energy yield of around 13 gigawatt hours.
The new plant, therefore, makes a significant contribution to climate-friendly energy supply. Another advantage is that the ground-mounted PV system significantly reduces environmental impact. The new project near Horb am Neckar will save around 5,700 tons of harmful CO2 emissions annually.
For us, working with municipal utilities is a successful model that enables the production of climate-friendly electricity for local consumption by customers. We are pleased that we were able to implement this concept together with Stadtwerke Stuttgart.
