Serial Renovation

In Berlin-Charlottenburg, Berliner Immobilienmanagement (BIM) is currently having the first fire station in Germany serially renovated. The building will receive a new building shell with 86 individual facade elements. © dena|Claudius Pflug

For years, the renovation rate in Germany has been stagnant at around one percent. The German Energy Agency (dena) is therefore promoting serial renovation in Germany on behalf of the German Federal Ministry for Economic Affairs and Climate Action (BMWK) using the Energiesprong model. This innovative concept combines digital design with industrial prefabrication and standardized solutions, and considerably accelerates and simplifies the renovation process. Following the successful launch of the program for residential buildings, dena is now extending the serial renovation approach to non-residential buildings., such as schools, accommodation and office buildings. Drees & Sommer and Capgemini Invent, Capgemini Group's global powerhouse for digital innovation and transformation issues, support dena with consulting services around market introduction.

Serial renovation based on the Dutch Energiesprong principle is among the key concepts that will have to be considered as an alternative to conventional renovation. Serial renovation is not only quicker, but also offers the opportunity to give consideration to matters such as urban mining and circular economy principles. For instance, construction modules can be designed in accordance with circular principles, so they can be prefabricated systematically in a way that conserves resources.”

Serial Renovation Already Being Used Successfully in Residential Buildings

Energiesprong is an innovative renovation concept that is based on digital design, industrial prefabrication and standardized processes. Large modules such as façade, roof or technical components are prefabricated in production facilities and tailored to the specific building. Digital design by means of a 3D building scan enables tailored scheduling of individual elements and detailed planning of the sequence of the construction work. This makes the renovation process as a whole quicker than a conventional modernization and saves costs.

Timo Sengewald, who is part of dena’s Energiesprong team and is responsible for serial renovation of non-residential buildings explained: “We have already used the Energiesprong model successfully in a number of residential real estate projects, with more than one hundred further projects currently being implemented or in planning. The results are impressive: the renovated buildings achieve energy savings of between 80 and 90 percent, and the modernization work takes a significantly shorter time. The approach thus offers the opportunity to speed up the renovation of existing buildings in Germany and quickly raise the renovation rate to more than one percent.” dena’s next step is to extend the approach to non-residential buildings. Pilot projects will include the renovation of accommodation, office, administration and school buildings.

For a successful market preparation and introduction strategy regarding non-residential buildings, dena has taken the consulting companies Drees & Sommer and Capgemini Invent on board to support them. The brief includes analysis of the portfolio of the German Institute for Federal Real Estate (BImA), and identification and prioritization of pilot projects. Additionally, it involves the development of strategic and efficient renovation scenarios for public non-residential buildings, taking into account key cost parameters. The assignments also comprise the provision of continuous support with regard to the implementation of pilot projects, up to the preparation of building contracts and construction.

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