Blue Energy



Rather than sunlight or wind power, sustainable energy research is now focussing on “blue energy” which will produce electricity using only sea and river water as a new source of renewable energy.
    Osmotic Power
Osmotic power, also called “salinity gradient power”, produces electricity by converting the difference in the osmotic pressure between seawater and freshwater into electric power. This method of generating electricity puts no heat load on the environment; it is excellent for cutting back on CO2 emissions; there are fewer changes in output over time, as there are with wind power generation or solar power; and it is an extremely safe new source of renewable energy.


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  • Demonstration movie

      Reverse electrodialysis
    Systems for the desalination of seawater using electrodialysis insert seawater between a cation exchange membrane and an anion exchange membrane. Fresh water is produced by getting the ions to move through application of electrical pressure. Reverse electrodialysis is the reverse of this process, and is a method of producing electical energy from seawater and freshwater. This method is also called gradient power or concentration cell. If the ratio of concentration is 30 at either end, then a power output of 1.2W per each pair of cation/anion exchange membranes at 1m2.  



  • More details.(1)
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  • Demonstration movie