Nuclear power is  ‘In theory…a source of cheap, dependable, constant electricity. In practice it is too costly for private investors to back without government guarantees, and its perceived danger makes it unpopular in some European countries and in Japan. One of several flaws in Germany’s Energiewende – supposedly a big shift to green technology – was the hurried abandonment of the country’s nuclear capacity. Besides, many of the world’s existing nuclear power stations will have to close in the coming two decades. Barring a political shift or a technological breakthrough—perhaps in small, mass-produced nuclear plants—it is hard to see the fortunes of nuclear energy reviving,’ (‘Let there be light’ The Economist Special Report–Energy & Technology January 17th 2015, p.3-6).