Comment Re:Double Duty? (Score 1) 301
Of course. This has nothing to do with dams or tidal power or anything like that. This is about estuaries and deltas. Think about installations in the Nile, or Amazon deltas. Wherever rivers run into the sea actually. That is where you find fresh and salt water together. It could be a limited but useful augment in some coastal areas. If the fresh water is running into the ocean anyhow we can use "concentration potential" to get some power at the end of the cycle. Ultimately this is solar power which came from evaporation which created the freshwater in the first place. It is an interesting idea. The devil will be in the construction details which will determine whether this is scalable.