21107 Hamburg-Wilhelmsburg: The former flak bunker in Wilhelmsburg has become a symbol of the climate protection concept Renewable Wilhelmsburg. The monument, which has been virtually unused since the end of the war, was refurbished as part of the IBA Hamburg and converted into a renewable power plant with large-scale heat storage. The energy storage facility has a volume of 2,000 cubic metres, which corresponds to 2,000,000 litres. It supplies the 120-hectare Reiherstieg district with climate-friendly heat and feeds renewable electricity into the Hamburg distribution grid.
Planungsbüro: Manfred Hegger
44649 Herne: This is not a housing estate, but the concept could equally be applied to housing. The Naturhuset apartment house by Bengt Warne in Stockholm was one of the first pioneering buildings to implement the house-in-house principle with a shell of glass. Also the Student dormitory ESA in Kaiserslautern is built like this. The project in Herne, however, is the most spectacular of its kind in this form.
Planned in partnership by the German architectural firm HHS Planer & Architekten AG and the French architectural firm Jourda & Perraudin (Francoise Helene Jourda and Gilles Perraudin), the building is enclosed in a glass climate shell that creates a Mediterranean climate similar to that in Nice. This is on average 5 °C warmer than the outside temperature. Water features, earth channels and large gates prevent overheating in summer. The solar system in the roof, was the largest building-integrated system of its kind at the time. The supports inside are made of 56 spruce trunks. Completion: 1999
60327 Frankfurt: Energy-plus building, BMUB-supported. 74 residential units and 2 commercial units, gross floor area: 11,700 m². The building itself generates the energy required by the residents for heating, ventilation, water heating, household, elevator and general electricity. The energy supply including electricity is included in the flat rate rent. Surpluses can be used by the residents for e-mobility. Completion: 2015
61440 Oberursel3 new office buildings, 18 new residential buildings, GFZ: 1.06; The largest PlusEnergy quarter could have been built in Oberursel near Frankfurt with around 150 apartments and commercial use in 3 office buildings and 18 residential buildings as new buildings.