Ocean waves have a great deal of energy in them which can be harnessed to create yet another alternative source of electricity. Many shorelines across the world have enough energy to make these systems viable.

Many start-ups and research initiatives across Europe and Asia have already started perfecting this technology and it may not be long before the associated costs are brought down to a level comparable to traditional sources of electricity.

The only hiccup according to me is that this will directly compete with Wind power. Any location with adequate waves will also be suitable for Wind power as wind and waves go together. It all depends on which turns out be cheaper of the two.