Osmotic Power aka Blue Energy aka Salinity Gradient Power to 'pump' water out of NL instead of a "gemaal"?

Norway has an Osmotic Power plant.The plant is driven by osmosis that naturally draws fresh water across a membrane and toward the seawater side. This creates higher pressure on the sea water side, driving a turbine and producing electricity.


Why not use Osmosis to `pump` fresh water out of Holland instead of creating electricity?



These guys (PDF) thought about using osmosis to create electricity to power a pump ( gemaal )at Lauwersmeer. If you skip the electricity production and just use the Blue Energy pump directly, it should be less expensive.

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