As of March 2021, the electricity generation of conventional hydropower plants that used regulated reservoirs amounted to over ** million megawatt hours. With this method, water is stored in a pond when the demand for power is low during the night or on weekends. While generating electricity from the flowing water, the amount of water is adjusted accordingly to the power demand.
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ANRE (Japan). (April 11, 2022). Electricity generation of fully developed hydropower plants in Japan as of March 2021, by generation method (in million megawatt hours) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/
ANRE (Japan). "Electricity generation of fully developed hydropower plants in Japan as of March 2021, by generation method (in million megawatt hours)." Chart. April 11, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/
ANRE (Japan). (2022). Electricity generation of fully developed hydropower plants in Japan as of March 2021, by generation method (in million megawatt hours). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/
ANRE (Japan). "Electricity Generation of Fully Developed Hydropower Plants in Japan as of March 2021, by Generation Method (in Million Megawatt Hours)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 Apr 2022, /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/
ANRE (Japan), Electricity generation of fully developed hydropower plants in Japan as of March 2021, by generation method (in million megawatt hours) ÌÇÐÄÆƽâ°æ, /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/ (last visited July 21, 2026)
Electricity generation of fully developed hydropower plants in Japan as of March 2021, by generation method (in million megawatt hours) [Graph], ANRE (Japan), April 11, 2022. [Online]. Available: /statistics/1283531/japan-electricity-production-hydropower-plants-my-generation-method/
