The new Japanese plan says that the country will replace the missing nuclear energy with an eight-fold increase in renewable energy (wind, solar, etc.), and "the development of sustainable ways to use fossil fuels." But going from 4 per cent to 30 per cent renewables in the energy mix will take decades, and nobody has yet found an economically sustainable way to sequester the greenhouse gas emissions from fossil fuels.
The truth is that as the Arctic sea ice melts and grain harvests are devastated by heat waves and drought, the world's third-largest user of nuclear energy has decided to go back to emitting lots and lots of carbon dioxide.
In Germany, where the Greens have been campaigning against nuclear power for decades, Chancellor Angela Merkel has done a U-turn and promised to close all the country's nuclear reactors by 2022. She also promised to replace them with renewable power sources, of course, but the reality there will also be that the country burns more fossil fuels. Belgium is also shutting down its nuclear plants, and Italy has abandoned plans to build some.
Even France, which has taken 80 per cent of its power from nuclear power plants for decades without the slightest problem, is joining the panic. President Francois Hollande's new government has promised to lower the country's dependence on nuclear energy to 50 per cent of the national energy mix. But you can see why he and his colleagues had to do it. After all, nuclear energy is a kind of witchcraft, and the public is frightened.
The tireless campaign against nuclear energy that the Greens have waged for decades is finally achieving its goal, at least in the developed countries. Their behaviour cannot be logically reconciled with their concern for the environment, given that abandoning nuclear will lead to a big rise in fossil fuel use, but they have never managed to make a distinction between the nuclear weapons they feared and the peaceful use of nuclear power.
The Greens prattle about replacing nuclear power with renewables, which might come to pass in some distant future. But the brutal truth for now is that closing down the nuclear plants will lead to a sharp rise in greenhouse gas emissions, in precisely the period when the race to cut emissions and avoid a rise in average global temperature of more than 2C will be won or lost.
More people die from coal pollution each day than have been killed by 50 years of nuclear power operations - and that's just from lung disease. If you include future deaths from global warming due to burning fossil fuels, closing down nuclear power stations is sheer madness. Welcome to the Middle Ages.
Gwynne Dyer is an independent journalist whose articles are published in 45 countries.