Japanese and German companies, including Kyoto Fusion, Siemens Energy and Mitsui, have agreed to cooperate in the development of nuclear fusion technologies, Nikkei Asia reports. The parties plan to launch a commercial power plant in Germany in the 1930s. To develop the industry, the German government plans to invest 2 billion euros by 2029, and Japan intends to allocate 3.1 trillion yen ($19.6 billion) through public-private partnerships by 2040.