Osmotic power is a new renewable energy, which is stands out as a promising and unexploited sources. It uses a membrane as a filtrer that will let water flow through, while it catches suspended solids and other substances, this is the membrane technology. This is the main technology for an efficient osmotic power production.
The principle of the osmosis is to place a semi-permeable between two tanks containing water with different salt gradients. By the use of the entropy of mixing water, and the creation of increasing pressure due to osmotic forces, we would be able to see a laminar flow of water to the most saltier side. This increased pressure is introduced into a turbine to create the energy.
The osmotic power is capable to produce approx 12 TWh/year, and to operate during 7000 hours a year at full capacity (while a wind mill is designed to operate in a average 3.500 hours a year at various capacities).
Osmotic power represents an existing new renewable energy source with a strong commercial potential. However, this technology is expensive to settle, but the rentability is more significant.
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