Planning low-temperature district heating and cooling networks (LTDHCN) still poses many challenges. It requires research, especially in the scalability of the networks and the connected energy producers and heat sources. In the project GeoWaermeWende, a passive, existing LTDHCN is monitored. For this purpose, a monitoring concept will be developed to collect relevant operating parameters at different network locations, which will be compiled and processed in a database. In addition, various tools are developed for planning LTDHCN. With the help of the measurement data, individual simulation models are validated, which provide the basis for a holistic district model consisting of all relevant components. Analytical and numerical approaches enable a variety of promising analyses regarding the network dynamics under changing boundary conditions and the interaction of the network with the subsurface. All simulation tools are accessed via a geothermal network information system (GNIS). The GNIS is established as a spatial data infrastructure with a geoportal to facilitate web-based access to the data required for the analysis and simulation. The geoportal is also to be used to configure and analyze the LTDHCN.
