A floating wind farm includes a plurality of floating rafts connected with one another and being disposed in a body of water below the water by a predetermined distance; a plurality of wind turbines connected to the floating rafts respectively and being configured to be driven by wind and thereby generate power; a power generator connected to the floating rafts; a plurality of anchors connected to the floating rafts respectively and disposed in the body of water for confining the location of the floating rafts. Each of the floating rafts includes at least three pipes and a plurality of ballast blocks attached to the pipes. The pipes are configured to store air compressed by the power generated by the wind turbines. The power generator is configured to generate and output electricity from the compressed air stored in the pipes.