Fire Lord and Water Lord

Japanese: 火主水従 - かしゅすいじゅう

A power supply system in which base load (constant power demand excluding time and seasonal fluctuations) is met by thermal power generation, with hydroelectric power used for supplementation. Conversely, a system in which hydroelectric power is the main source and thermal power is the supplementary source is called hydroelectric-secondary, thermal-secondary. Japan has traditionally followed the hydroelectric-secondary, thermal-secondary system, but advances in thermal power technology have improved thermal efficiency and led to a dramatic increase in the development of thermal power plants with large capacity equipment and low construction costs, so in 1962 the country switched to a thermal-secondary, hydroelectric-secondary system. Since then, energy demand has continued to increase, and nuclear power generation has been introduced, and its share of power generation has also increased, but due to strong opposition from local residents and others due to environmental concerns, the power generation system remains centered on thermal power.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

ベースロード (時間的，季節的な変動を除いたコンスタントな電力需要) を火力発電によってまかない，補給用に水力発電が使われる電力供給方式。逆に水力が主，火力が補給用の方式を水主火従という。日本は伝統的に水主火従方式をとってきたが，火力技術の進歩から熱効率が向上し，大容量機器で建設費の低い火力発電所の開発が飛躍的に増大してきたため，1962年から火主水従方式に移行した。その後もエネルギー需要はふえ続けて原子力発電が導入され，その発電の比重も高まってきたが，環境問題などで地域住民などの反対運動が激しく，依然火力中心の発電体制となっている。

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