October 04, 2007	Thursday	Ramazan 21, 1428

OSLO: Norway plans to build the world’s first osmotic power plant, a renewable energy source that makes use of the pressure built up between sea water and fresh water, Norwegian energy group Statkraft said on Wednesday. Osmotic power is based on the natural process of osmosis.

In an osmotic power plant, sea water and fresh water are separated by a membrane. The sea water draws the fresh water through the membrane, thereby increasing the pressure on the sea water side. The increased pressure is used to produce power with a turbine, Statkraft said.

“Osmotic power is a very promising technology,” the head of Statkraft, Baard Mikkelsen, said in a statement.

“It is clean and (greenhouse gas) emission-free, and could become competitive within a few years.” According to Statkraft, the technology could produce some 1,600 terawatt hours (TWh) worldwide.

The prototype of the osmotic power plant is being built in Hurum in southeastern Norway and could produce between two and four kilowatt hours (KWh). —AFP