The great thing about wave energy that it is the endless ocean surface which both stores the energy, and transports it through space and time.

By this way, the energy can be harvested far away from the time at which the wind was blowing, and far away from the place where it created waves.

As such, wave power is an ideal complement to wind and solar energy, because it can fill up the grid at the times when the latter are lacking - without expensive storage devices, because the storage, which is the ocean surface, is already there.