Ocean current power generation system

An ocean current power generation system, comprising:

• a water pool disposed at the sea level and storing sea water;
• at least one inlet pipe comprising:
• an output end connected near to a bottom of the water pool;
• and
• at least one input opening disposed at and facing an ocean current in the sea to redirect a part of the ocean current to flow by itself into the input opening to the output end and to the water pool and stored therein, wherein when the flowing-in ocean current reaches the water pool and stops flowing when stored, the kinetic energy of the flowing-in ocean current from the input opening is transformed into a potential energy when the flowing-in sea water is stopped and stored in the water pool so the flowing-in ocean current creates a higher water level in the water pool higher than the sea level around the water pool;
• a drainage control means comprising at least one outlet pipe or path connected near to the bottom of the water pool and has a drainage output to the sea below the sea level around the water pool, wherein the drainage output is near a shore where it's not near the ocean current, or the drainage output does not face the ocean current, wherein, when the water level of the stored sea water in the water pool is higher than the sea level around the water pool, the stored sea water in the water pool is drained back to the sea of the lower sea level around the water pool through the outlet pipe or path;
• and
• a generator disposed at the drainage path of the outlet pipe or path, and uses the draining water flow from the water pool to the outlet pipe or path to generate electric power.