Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power which breaks these bonds). To date there are no commercial fusion plants. These are expected to be less impactful than a fission plant because of less radioactive waste that can be created. The U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) has joined forces with researchers in South Korea to develop a conceptual design for a pioneering fusion facility in that Asian nation. The proposed device, called K-DEMO, could be completed in the 2030s as the final step before construction of a commercial fusion power plant that would produce clean and abundant energy for generating electricity.