With a wave energy converter, wave energy can be extracted from rapidly changing water levels. There are many different techniques for extracting wave energy. Some examples are floaters that oscillate or hinge vertically, air chambers in weirs and overtopping converters that use reservoirs to create a head and subesquently drive turbines (Witteveen+Bos & CE Delft, 2019; IRENA, 2014).
The wave climate in the North Sea is relatively mild compared to waves on the oceans. Despite the mild wave climate, a number of (Dutch) suppliers are developing wave energy converters that can also be used in the North Sea. The advantage of a milder wave climate is that converters also have to endure lower forces and that learning can be done in relatively calm conditions, after which expansion to other locations with mild wave conditions and the oceans could possibly follow.