Background and goals

The challenge which the project will contribute to solving

Denmark aims for a CO2 neutral society by 2050. This ambitious goal cannot be obtained without a drastically reduced energy use for construction and operations of buildings. Buildings are responsible for 40-50% of the total European energy consumption today and it has been found that the greatest energy saving potential lies in the renovation of the existing building mass. It is estimated that the existing energy consumption for Danish buildings should be reduced by 73% to meet the ambition of a CO2 neutral society. 75% of the buildings that exist today will still be in operation in 2040. Hence, a considerable amount of the existing building mass must undergo a substantial energy renovation to comply with the ambition of a CO2 neutral society. Recent studies have calculated that cost-efficient energy renovation of the building envelope and technical installations of the existing building mass will only lead to an energy reduction of 20-35%. It is the declared goal of Innovation Fund Denmark’s societal partnership on Energy-efficient building renovations that a sustainable and cost-efficient energy reduction of 50% is demonstrated in this project. This calls for the identification and quantification of added value to energy renovation that can justify more extensive energy saving measures.

The challenge of transforming the building mass to become more energy-efficient not only calls for technical development and innovation but to a great extent also calls for the development of an architectural strategy, which is capable of articulating and realizing the architectural potential within the transformation process and thereby add value.

The specific research and innovation goals

The overall objective of the RE-VALUE project is to develop and demonstrate the validity of a generic renovation assessment method. This method will allow client and decision makers in renovation projects to identify a cost-efficient solution in terms of energy performance as well as create utility and architectural values by means of energy renovation, refurbishment, and transformation in the built environment.

The overarching hypotheses are:

  • Added value in building renovation projects can be described through a holistic assessment framework considering all factors in the built environment, i.e. technical, utility, cost, and architecture.
  • The holistic assessment framework can by means of a probabilistic methodology establish a measure – a Renovation Index – that empower the client, users, and society towards future innovative renovation solutions.

By means of a research approach embedded in several 1:1 demonstration projects, the partnership establish an innovative platform for building a societal business case assessing the wider benefits of a value adding renovation, including technical, health, architectural, cooperative and logistic parameters.

A description of all of the work packages

The project has been divided into 5 Work Packages (WP’s), which will be delivered over a 42-month period. Each WP targets a partial development of the overall RE-VALUE aim of identifying, quantifying and modelling added value of holistic renovation projects. RE-VALUE will demonstrate the value adding renovation process in full-scale projects through both social housing and private housing projects put to RE-VALUE’s disposal by key partners. This provides RE-VALUE with a unique real life “renovation Exploratorium”.