The IDST will be based on a decision making methodology, designed to select and prioritise energy efficiency retrofitting interventions. It will implement existing and new cost-effective solutions, for significant sustainable improvements in the rehabilitation of urban districts.
Taking into account the different European urban typologies and the priorities of the decision makers, the methodology will support retrofitting actions that are deployed as a unique intervention, but also scheduling sequential interventions in the most cost-effective way.
This methodology will focus on the initial stage of the retrofitting process at district level, in which the retrofitting framework is established, with the definition of strategies and technological solutions.
Ultimately, the IDST will allow selecting the optimal, off-the-shelf technologies and strategies for each specific energy retrofitting project in terms of sustainability as a whole (environmental, economic and social).
To ensure usability and effectiveness, the IDST will contain a collection of sustainable retrofitting strategies and technical solutions at building and district level. Each strategy will be characterized according to different aspects, such as adequacy, costs, technical properties, environmental parameters, and so on.
The software will enable modelling the district and building with an adequate level of definition, in such a way that evaluation results will be precise enough, but the input data to define the retrofitting project will be easily supplied. The IDST will feature a 3D graphical user interface, in order to facilitate the interaction between the multiple stakeholders involved in the decision making process.
The users will be able to select the most promising sustainable retrofitting strategies and technical solutions at building and district level, by choosing from a ranked list of possible scenarios proposed by the IDST.