This work concatenates and discusses various studies about Wave Energy Converters and specifically Pendulum Wave Energy Converters (PeWECs) to reach an estimation for the cost of the energy produced by this type of electricity generation technology. A sensitivity analysis is then applied so that the main factors and their influence on the final cost of energy can be comprehended. To understand the context in which PeWECs are inserted, this work presents a panorama review of the renewable energy sector. The work also contains a deep dive in the Ocean Energy and Wave Energy sectors, so that comparisons between PeWEC technology and other power converters can be made.