Public Buildings
City Hall Freiburg
© HGEschCity of Freiburg in Breisgau
ingenhoven architects, Düsseldorf
24.000 m²
1.500 m²
May 2013 – middle of 2017
When the Stühlinger city hall in Freiburg was completed in November 2017, it became the world’s first public net-plus-energy building. With a gross floor area of 24,000 square meters, it provides space for more than 800 employees.
Its standout feature: the building produces more energy than it consumes. It meets its own energy needs and feeds surplus power into the municipal grid. Electricity, heating, and cooling are generated entirely from renewable sources such as photovoltaics, solar thermal energy, and geothermal energy.
As a result, the primary energy requirement of the new Stühlinger city hall is just 55 kilowatt hours per square meter per year — around 40 percent of that of a comparable office building. With these and other special features, the building sets a pioneering standard in energy performance and sustainability. Drees & Sommer’s engineering experts were responsible for the energy concept, technical building services, building physics, and façade technology.
In 2018, the building received the German Sustainability Award.
The Stühlinger city hall is one of our Top Projects — a category reserved for work we are especially proud of. These projects have not only delivered exceptional value for our clients, but have also shaped us as a company.
Why the Stühlinger city hall deserves a place among our Top Projects:
- Pioneering role: When the building was completed in 2017, it became the world’s first public net-plus-energy building.
- Primary energy requirement: The primary energy requirement is only 55 kilowatt hours per square meter per year, which corresponds to 40 percent of that of a comparable office building.
- German Sustainability Award: In 2018, the Stühlinger city hall received the German Sustainability Award.
“We are very proud that our work has made a significant contribution to the success of the project and therefore also to the sustainability award. Holistic and innovative energy and sustainability concepts can only be achieved if everyone works closely together.”
Prof. Michael Bauer, Partner at Drees & Sommer
Added Value
- Holistic planning and consulting enabled the client to realize a building that is both ecological and cost-efficient.
Individual services
- General planning
- Building services engineering
- Energy design
- Building physics
- Energy management
- Facade technology
- Project supervision KG 400
“We are very proud that our work has made a significant contribution to the success of the project and therefore also to the sustainability award. Holistic and innovative energy and sustainability concepts can only be achieved if everyone works closely together.”
© HGEsch
© HGEsch
© Gassmann und Großmann Baumanagement GmbH
© Gassmann und Großmann Baumanagement GmbH
© Gassmann und Großmann Baumanagement GmbH