This work has the objective to deploy our visions about the non-conventional renewable energies,
mainly the wave & tidal sea energy, and to bring the readers new projections and ideas regarding
these types of energies. In a first stage, the current state-of-art of other types of energies is
presented , in order to create an informative survey for the reader; after this, the sea energy –both
in Chile and the world— is analyzed, together with its evolution, its main generating plants,
devices, developed models, etc. These devices are presented to the reader for him to have an
opinion regarding the energy using the sea, its future and its new applications. In a second stage,
an alternative device is proposed and designed, forthe generation of electrical energy based on
sea energy, according modern control & automation techniques. The design conveys control,
resistance, simplicity and stability. The design isdeveloped under the following steps:
a) Mathematical models: under this