A hybrid power system including one or more base members configured to be installed at the seabed, one or more connecting members each coupled to a corresponding base member so as to be slidable in a vertical direction which is perpendicular to a top surface of the corresponding base member, a buoy configured to move in the vertical direction by receiving at least one of the wave force and current force, the buoy coupled to the top of the connecting member to move in conjunction with the one or more connecting members, and a power generation unit configured to generate electricity using vertical movement of the connecting members, the power generation unit installed in at least one of the one or more base members.