Pressure Retarded Osmosis
An illustration of Statkraft's power generating method using Pressure Retarded Osmosis (PRO)
Positive and negative ions passing through ion-permeable membranes in the proposed Blue Energy method proposed by Westus.
Statkraft's Pressure Retarded Osmosis (PRO) method
Where the river meets the sea - salt and freshwater could be used like a giant battery (Image of Amazon Estuary via NASA)
Statkraft is building the world's first osmotic power prototype in a disused chlorine-bleaching plant
Green energy comes in many guises these days, from wind-power to wave-power. One of the more compelling of the new kids on the eco-energy block is salinity power, which uses the concurrence of salt-water and freshwater in estuaries and marries it with the natural, effortless process of osmosis.
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