While it would be impressive if Japan were able to balance its energy sources and increase the amount of renewable energy that the country uses to 20 percent of its total energy use, it is hardly a logical goal to pursue over the next decade — the writers of the article cite a variety of reasons why this would not be possible:
"The fundamental reason that renewable energy sources are not already in wide use is that they have problems with quality, quantity and cost. For example, development of wind power and geothermal energy is limited by severe restrictions on where facilities can be constructed"and I agree. At this point in time, Japan has neither the economic resources to completely overturn the layout of its current energy grid nor the space. The government can hardly afford to construct a viable number of wind turbines to increase the amount of renewable energy the country uses — even less so over the next decade (the writers state that the government hopes to achieve this goal by 2020), and does not have the resources to allot to the creation of a hydro-powered section of the electricity grid. Solar or geothermal power seem to be the most feasible in this situation then, given the large amounts of open-air (but lived-in) space that the Japanese countryside boasts, and the high number of active hot springs sprinkled throughout the country's four islands. If we only had to take the environmental factors into consideration, implementing either widespread solar or geothermal power blocs — or both — would be the simple answer.
Space does not seem to be the problem, then. If the Japanese government truly wants to reduce its reliance on non-renewable energy sources, then other cuts are in order too. The Japanese people could start by reducing their overall energy usage — this would make it much easier to meet the 20 percent goal for renewable energy, since the total amount of energy required would be much lower. I'm not sure how much energy we are actually saving by powering off the AC in trains on hot days, but if energy conservation was something preached regularly — and not only in times of need — perhaps the government could edge a bit closer to achieving its goal.
Nuclear energy may have proven itself not to be the most safe energy source, but in Japan, where the space is tight and the population high, it seems to be one of the most feasible. It is only now that we are finding out how many flaws there are in the management system of the reactors — perhaps all we need is to learn to save a bit more energy by powering off those brightly lit LCD screens at night and a more transparent government. And that is what we should be protesting for.