Wave energy is another renewable technology waiting to break through. One main challenge is that about 35%–50% of WEC (wave energy converter) costs come from the device structure alone. Researchers at NREL are experimenting with variable geometry, changing the shape of the WEC so that in more energetic seas the structural loads are controlled. In turbulent seas the excess load can easily be shed, while when the seas are quiet the maximum energy … [Read more...]
Unlocking the potential of Ocean Energy: from megawatts to gigawatts
When you consider the expanse of the world’s oceans no one should be surprised that the theoretical potential for electricity generated from ocean energy is several times total global energy demand. Of course, that potential needs to be harnessed at commercial prices. Francisco Boshell, Roland Roesch, Alessandra Salgado and Judit Hecke at IRENA run through the technologies used to extract energy from tides and waves, the potential near-term … [Read more...]
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