Understanding the time-dependent behavior of a system is of the essence in many engineering applications. To analyze the time-dependent behavior of systems, use is made of models. To provide a setting for getting acquainted with the full cycle of model development, this challenge-based project is placed in the societal context of the energy transition. Within the framework of challenge-based learning, the project groups independently define their own energy storage and transport solution. The goal of this project is to develop a mathematical-physical model for an energy storage and transport system, and to validate this model using experiments.