This URSES+ project examines how adjacent aquifer thermal energy systems can organize the use of the sub-surface by coordinating with one another to save energy as well. Aquifer thermal energy systems make use of space under the ground. In areas with high concentrations of buildings, it is important to make optimum use of the space beneath these buildings, so that they can save energy using aquifer thermal energy. This project examines how neighbouring aquifer thermal energy systems can organise the use of the sub-surface themselves, by communicating and coordinating with each other. In this research project, TU Delft and its partners will implement self-organising aquifer thermal energy systems, Museumplein is used as a test site.