The Renovation Explorer - Input Data Report V1.0: Review of available databases for model development

Improving the sustainability of existing houses is a major challenge when it comes to achieving climate goals. The Renovation Explorer (De Renovatieverkenner) project aims to develop simulation models that provide
reliable and practical calculations for the existing housing stock in order to obtain more sustainable renovation solutions with healthy and comfortable indoor environments. In the Renovation Explorer, problem formulation
and the determination of the performance indicators play a crucial role in ensuring accurate and focused simulations and performance assessment of the solution(s). In this respect, capturing relevant physical phenomena without unnecessary complexity, excessive inputs, and redundant performance indicators is critical. In the Renovation Explorer, accurately setting input parameters in building simulation tools is crucial for the
reliability of both sensitivity analysis and renovation measure optimization results. For instance, when evaluating the influence of insulation thickness on energy consumption, it is essential to employ the most commonly used insulation thickness. Using too narrow or wide ranges of values may lead to an underestimation or overestimation of the actual impact of insulation, distorting the results. To that end, three databases as described in this report are mainly relied on: 1) 3D BAG, an open database from TU Delft about existing Dutch buildings and their geometries. It contains 3D coordinates for each surface of the building envelope, which are required as input in the simulation models. 2) BouwConnect (developed by De Twee Snoeken), a database of building components (walls, floors, roofs, windows) and HVAC systems (Heating, Ventilation, and Air Conditioning) that are used to build or renovate houses. 3) WoON, a national survey of the Dutch housing situation. Among other things, it provides data on the behaviour of inhabitants (e.g. how they set the heating setpoint, and how often they open windows), which can be used in the simulation models. This report begins with a general introduction, followed by descriptions of each database. Details include the type of information, data source, and its relevance to the Renovation Explorer. The goal is to provide a concise overview of the databases and their importance for our research. Also, the National Digital Platform (LDP) is introduced, providing insights on the future input data availability. LDP is an online platform designed for assessing, planning, and implementing sustainable improvements in residential structures. The system integrates data from height maps, aerial imagery, floor plans, and user input to meticulously reconstruct buildings. The decisions of the selected input parameters will be presented in the deliverable D-A 2.2 sensitivity analysis.