To provide power generation facility installable without requiring a special geographical feature if the facility is located near the ocean.
This facility is provided with an underground water tank 12 provided under the ground, a water channel 13 for communicating the ocean 11 with the underground water tank 12, a water turbine pump 14 provided in the water channel 13 and a generator-motor 15 connected to the water turbine pump 14. Power is generated by the generator-motor 15 by performing a water turbine operation of the water turbine pump 14 by dropping sea water in the underground water tank 12 from the ocean 11 during a time zone of much power command. Sea water stored in the underground water tank 12 is discharged to the ocean 11 by making the water turbine pump 14 perform a pump operation by operating the generator-motor 15 by using night time power or surplus power during a time zone of little power command.
YASUDA HIROSHI
HAYAMA TOMOAKI
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