Explore an innovative design study focused on creating visual interfaces for district heating systems in this 21-minute conference talk. Delve into the research process, including extensive field studies at power plants, to understand industrial operators' needs and workflows. Examine three high-fidelity prototypes that demonstrate novel visualizations designed to communicate system status at-a-glance. Learn about the design choices made, focusing on how visual encodings relate to industrial operators' task requirements. Discover how the physicality of industrial processes can be expressed through purely visual means, moving beyond conventional industrial interfaces. Gain insights into the preliminary evaluation results and future research directions in this cutting-edge exploration of interactive surfaces and spaces for industrial applications.