Haarhausen primary school: Energy-efficiency upgrade for the children

Within the context of participating in the nationwide “Low-energy house model for existing schools” project by the German Energy Agency, the city of Wuppertal has prepared a prime example of sustainable building management. Following the energetic renovation of Haarhausen Primary School in 2009, the primary energy requirement of the building was 74 per cent and transmission heat loss was 64 per cent below the specifications for new buildings according to the relevant regulation at that time (EnEV 2007 [German Energy-Saving Regulation]). Because the building constructed in 1970 is structurally identical to nine other schools in the municipal area, the project serves as a model for others to this day.

Innovative technology turns the school into something very special: A new waste air system controls the air exchange, bringing fresh air into the classrooms as required and also improving the air quality and hygiene. In order to optimise the insulation, the façades, the roof and the basement ceiling were rebuilt and each fitted with strong insulation. In addition, plastic windows with triple glazing and thermally separated edge seals were installed. The old oil-fired heating system was replaced by a wood pellet boiler with digital regulation.

Engine for progress:

  • establishment of renovation standards for school buildings
  • 25 per cent reduction in energy consumption
  • the original aim of reducing the primary energy requirement and losses due to heat transfer by 40 per cent has been significantly exceeded
  • the EU Green Building Certificate

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Photo: Frank Buetz, Gebäudemanagement der Stadt Wuppertal

The Haarhausen primary school, as an example of the “Wuppertal School Type”, was in urgent need of renovation. The implemented measures reduced power consumption by 25%.

Carbon dioxide emissions reduced by 91 per cent

Overall, the implemented measures have decreased total power consumption by nearly 75 per cent and save a total of 77 per cent of the required annual heating energy, which corresponds to approximately 11,000 euro. The project was awarded the Green Building Certificate from the European Commission and is a part of the Wuppertal/Remscheid Efficiency House Route of the Bergische Gesellschaft für Ressourceneffizienz mbH (Society for Resource Efficiency). Theme routes showing examples of best practices are created to inform visitors of innovations in energy-efficient construction.

Photo: Privat

“GMW decided, along with Haarhausen Primary School, to test and establish highly efficient renovation standards at an example of the “Wuppertal school type”“ (a total of 9 identical buildings within the city limits). Therefore, not only is a contribution being made to climate protection, the financial burden on the city is also eased for the future. This energetic renovation in 2009 was the starting signal for a wide range of other energetic renovations in the following years.”

Christian Gleim, Head of Energy and Environmental Management at GMW

Partners and sponsors

  • Stadt Wuppertal - Gebäudemanagement (GMW)
  • Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit (BmUB)
Counselling centers:
  • Neue Effizienz - Bergische Gesellschaft für Ressourceneffizienz mbH