In Japan, the maximum output of pumped storage hydropower systems that were already fully developed amounted to over 21.9 million kilowatt in 2021. The maximum output of pumped storage hydropower systems was much higher than for conventional hydropower.
Maximum output of hydropower stations in Japan in 2021, by status of the plant
(in million kilowatt)
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Maximum output of hydropower stations in Japan in 2021, by status of the plant
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"Already developed" includes power plants that have been in operation as of March 31, 2021, and that have a maximum output of 100 kilowatt or more.
"Under construction" is calculated based on the Electricity Business Act for which the preliminary notification of the construction plan was received by March 31, 2021.
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METI (Japan). (April 11, 2022). Maximum output of hydropower stations in Japan in 2021, by status of the plant (in million kilowatt) [Graph]. In Statista. Retrieved May 16, 2025, from https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/
METI (Japan). "Maximum output of hydropower stations in Japan in 2021, by status of the plant (in million kilowatt)." Chart. April 11, 2022. Statista. Accessed May 16, 2025. https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/
METI (Japan). (2022). Maximum output of hydropower stations in Japan in 2021, by status of the plant (in million kilowatt). Statista. Statista Inc.. Accessed: May 16, 2025. https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/
METI (Japan). "Maximum Output of Hydropower Stations in Japan in 2021, by Status of The Plant (in Million Kilowatt)." Statista, Statista Inc., 11 Apr 2022, https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/
METI (Japan), Maximum output of hydropower stations in Japan in 2021, by status of the plant (in million kilowatt) Statista, https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/ (last visited May 16, 2025)
Maximum output of hydropower stations in Japan in 2021, by status of the plant (in million kilowatt) [Graph], METI (Japan), April 11, 2022. [Online]. Available: https://www.statista.com/statistics/1283436/japan-maximum-output-hydropower-station-by-status-of-plant/
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