TU Berlin and Breakthrough Energy announced this week a major new project that will combine two advanced computer models into a single, powerful tool that can simulate the energy systems of Europe and the United States. By providing analysis and projections of what key energy infrastructure, such as transmission lines and power plants, might look like in the coming decades, this tool has the potential to guide and inform the allocation of billions of dollars in public and private investment, which will help to build the infrastructure needed to bring clean energy to communities across the world.