Even if Germany is a pioneer in many aspects of climate protection and many countries look to Germany as a role model, the path to a climate-neutral building stock is still a long one, as most buildings have not yet been or only minimally refurbished to improve energy efficiency. Existing buildings consume three to five times what is technically possible today. Furthermore, energy-saving refurbishments have required a high percentage of manual work at the construction site to date. Due to the complexity of the established construction process, there is little cost certainty at the beginning of the measures, even for small buildings. Overall, these aspects constitute a significant hurdle for a more rapid energy-efficient refurbishment of existing buildings.
In order to resolve these issues and work together with the relevant stakeholders to prepare the market for highly efficient, innovative complete refurbishments and hence further advance refurbishment efforts to obtain a climate-neutral building stock, dena is launching the project “Serial refurbishment of apartment buildings” together with the construction industry and real estate sector with the involvement of the Federal Ministry for Economic Affairs and Energy (BMWi) and the Dutch initiative “Energiesprong”.
During the project term, market barriers will be eliminated and trust built up between the stakeholders by working closely with the housing and construction industries. The goal is the joint development of prototypes which will show which serial refurbishment solutions can be implemented in Germany.
Industrial manufacturing is generally conceivable for all building types. However, for the next three years, the focus will be on the existing stock of housing companies (mostly apartment buildings), as a relatively small number of decision-makers is often responsible for the refurbishment of a very large number of buildings. A large number of properties for refurbishment is a prerequisite in order to be able to achieve financially attractive production conditions.
The buildings refurbished via serial production differ greatly from existing refurbishment options due to lower costs, a short refurbishment duration, an appealing design, as well as a functional and savings guarantee.
The goal of the project is to connect innovative housing construction companies with smart construction companies, transform districts, and improve the quality of life for residents. Dena will be supported in this three-year project by the non-profit organisation Energiesprong, which has already successfully developed this refurbishment market in the Netherlands.
Due to challenges of building refurbishment in Europe, dena, together with a market development team from Great Britain, France and the Netherlands, successfully applied with the project approach "Mustbe0" for inclusion in the EU funding programme Interreg for the region of North-West Europe.
The project focuses on the transnational exchange between the Energy Sprong market development teams to develop zero-energy refurbishment solutions for apartment buildings in the four countries. Together with innovative housing companies, several prototypes with a total of 415 housing units are to be refurbished. The majority of the prototypes will be implemented in Germany, where Energiesprong is coordinated by dena. Arsago Grundstücks- und Beteiligungsgesellschaft, Baugenossenschaft Oberricklingen, VBW Bauen und Wohnen, Vonovia and Wohnungsgenossenschaft am Vorgebirgspark are also involved. The Energiesprong approach stands for climate-neutral, modern and comfortable apartments, the refurbishment of which can be implemented faster and more cost-effectively through improved processes and a high degree of prefabrication.
The EU project Interreg NWE "Mustbe0" has a total budget of € 34 million and is supported by the European Union through the European Regional Development Fund (ERDF) with € 11 million. The Energiesprong Initiative is coordinated in Germany by the German Energy Agency GmbH (dena), supported by the Federal Ministry of Economics and Energy (BMWi) and supported by the GdW Bundesverband deutscher Wohnungs- und Immobilienunternehmen.