Over four decades have passed since Japan's first commercial nuclear power plant began operation in Ibaraki Prefecture in 1966. As of 2008, Japan has fifty-five reactors operating around the country with a total output of 49,467 megawatts (MW). Nuclear power accounts for approximately one-third of the country's total electric power output.

As an island country, it is not possible for Japan to exchange energy with neighboring countries through power transmission lines or pipelines. Japan is also energy-scarce, depending on foreign countries for about 80 percent of its energy resources. These conditions are completely different from those of Europe or the U.S.; therefore, the government of Japan concludes that it is rational to continue making the fullest possible use of nuclear power generation as one of the mainstays of the nation's energy supply. Nuclear power generation contributes to improved energy sufficiency and to the stability of the energy supply, in addition to playing an important role in reducing Japan's carbon dioxide emissions.

Of course, nuclear power represents only one cornerstone in a comprehensive energy policy; one designed to meet the growing energy needs of Japan and based on an ideal mixture that includes thermal power and hydroelectric power. Japan's electric power companies are prepared to meet this demand in the 21st century, and in the process, ensure that nuclear energy be used solely for peaceful purposes, and under the safest possible conditions.

While placing the highest priority on nuclear safety, Japanese electric power companies will continue their efforts to develop nuclear power generation as a base power source that plays an important role in Japan's electric power supply in order to secure a steady supply of electricity and address global environmental problems.

Learn more about why Japan needs nuclear power.