A new technology for electricity generation uses osmotic pressure to drive a turbine. It’s not ready for practical use yet, but a Norwegian firm hopes to build a commercial plant by 2015.
It sounds technically cool, but I’m a bit skeptical. The technology works by making fresh water salty. Unfortunately, fresh water is precious in much of the world, while there are other cost-effective ways to generate electricity. It seems like it might be reasonable to build an osmotic plant where a river meets the sea already, but those areas tend to have ecosystems that environmentalists get exercised about. The article mentions the possibility of a plant between the Red Sea and Dead Sea, where you could move salt water into even saltier water, but how many such places exist?
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