As of September 2024, *** hydroelectric power plants were situated in Nagano Prefecture, making it the prefecture with the largest amount of hydroelectric power plants in Japan. Overall, the number of hydroelectric power plants in Japan amounted to approximately **** thousand power stations.
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METI (Japan). (January 20, 2025). Number of hydroelectric power plants in Japan as of September 2024, by prefecture [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/
METI (Japan). "Number of hydroelectric power plants in Japan as of September 2024, by prefecture ." Chart. January 20, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/
METI (Japan). (2025). Number of hydroelectric power plants in Japan as of September 2024, by prefecture . ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/
METI (Japan). "Number of Hydroelectric Power Plants in Japan as of September 2024, by Prefecture ." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 20 Jan 2025, /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/
METI (Japan), Number of hydroelectric power plants in Japan as of September 2024, by prefecture ÌÇÐÄÆƽâ°æ, /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/ (last visited July 29, 2026)
Number of hydroelectric power plants in Japan as of September 2024, by prefecture [Graph], METI (Japan), January 20, 2025. [Online]. Available: /statistics/1194420/japan-hydroelectric-power-stations-number-by-prefecture/
