{{Infobox dam | name = Okutataragi Pumped Storage Power Station | name_official = | image = Kurokawa Dam survey 1976.jpg | image_caption = Satellite view of the upper reservoir. | image_alt = | coordinates = {{coord|35|14|12|N|134|51|23|E|type:landmark|display=inline,title}} | country = Japan | location = Asago, Hyōgo, Japan | status = O | construction_began = 1970 | opening = 1974 | demolished = | cost = | owner = | operator = KEPCO | res_name = Kurokawa Reservoir | res_capacity_total = {{convert|33387000|m3|acre.ft|abbr=on}} | lower_res_name = Tataragi Reservoir | lower_res_capacity_total = {{convert|19440000|m3|acre.ft|abbr=on}} | plant_pumpgenerators = | plant_turbines = | plant_pumps = | plant_hydraulic_head = | plant_capacity = {{convert|1932|MW|abbr=on}} | plant_capacity_factor = | website = | extra = }}
The {{nihongo|'''Okutataragi Pumped Storage Power Station'''|奥多々良木発電所|Okutataragi hatsudensho}} is a large pumped-storage hydroelectric power station in Asago, in the Hyōgo Prefecture of Japan. With a total installed capacity of {{convert|1932|MW}},<ref>{{Cite web |last=Fujimori |first=Reiichiro |last2=Evans |first2=Judy |date= |title=Going Dam Viewing? Introducing Japan’s Hydroelectric Power Stations. {{!}} めぐりジャパン |url=https://meguri-japan.com/en/knowledge/20211212_10340/ |access-date=2024-11-03 |website=Meguri Japan |language=en-US}}</ref> it is one of the largest pumped-storage power stations in the world, and the largest in Japan. The facility is currently run by the Kansai Electric Power Company.<ref name="enr">{{Cite web |last=Lewis |first=Scott |date=April 11, 2018 |title=The 10 Largest Pumped-Storage Hydropower Plants in the World |url=https://www.enr.com/articles/44302-the-10-largest-pumped-storage-hydropower-plants-in-the-world |access-date=2024-11-03 |website=Engineering News-Record |language=en}}</ref>
Like most pumped-storage facilities, the power station utilizes two reservoirs, releasing and pumping as the demand rises and falls. Construction on the facility began in 1970 and was completed in 1974.
== Kurokawa Reservoir == The Kurokawa Reservoir, the upper reservoir, has a capacity of {{Convert|33387000|m3|acre.ft}},<ref name="enr" /> a catchment area of {{Convert|1090000|m2}}, and a reservoir surface area of {{Convert|5.2|km2}}, and is held back by the Kurokawa Dam {{langx|ja|黒川ダム}}.
The embankment dam, located on the Ichi River, measures {{Convert|98|m}} tall, {{Convert|325|m}} wide, and is built with {{Convert|3650000|m3}} of material. The dam is located at {{Coord|35|14|15|N|134|52|52|E|display=inline}}.
== Tataragi Reservoir == The Tataragi Reservoir, the lower reservoir, has a capacity of {{Convert|19440000|m3|ft3}}, a catchment area of {{Convert|1050000|m2}}, and a reservoir surface area of {{Convert|13.4|km2}}, and is held back by the Tataragi Dam {{langx|ja|多々良木ダム}}.
The dam measures {{Convert|64.5|m}} tall, {{Convert|278|m}} wide, and is built with {{Convert|1462000|m3|ft3}} of material. The dam is located at {{Coord|35|14|13|N|134|49|55|E|display=inline}}.
thumb|left|Kurokawa Dam thumb|left|Tataragi Dam
== See also == {{stack|{{Portal|Japan|Water|Renewable energy}}}} * List of power stations in Japan
==References== {{Reflist}}
{{Commons category|Okutataragi Pumped Storage Power Station}} {{Dams in Hyogo Prefecture}}
Category:Energy infrastructure completed in 1974 Category:Hyōgo Prefecture Category:Pumped-storage hydroelectric power stations in Japan