This is an idea I had. Basically an offshore hydroelectric plant, where the dam is a very large cylindrical shape, heavily reinforced, buttressed, etc. to withstand all forces. The idea is that the wind turbines will pump out the water, and then the water turbines will be installed in the gravity base of the installation. (accessable from internal elevators), with large gate valves to control flow. Allowing internal oriented upwelling flow is what drives the electrical generators. Once the cylinder is full, it will have to be pumped out, but as long as there is wind energy (or solar, wave, thermal), this can be continuous. It could be used in lakes or oceans.
Like a dam, the system has energy on demand, provided the cylinder is pumped out. Like the Hibernia project (but larger), it could be built onshore, and towed out to depth. Presumable a few hundred feet would be optimal. (like a dam) and then the limits to power are the limits to construction methods. Once the basic technology is proven, the systems can begin to increase in size. If the system is not too far offshore, then underwater cables can deliver the power to the grid. (maybe an underwater access tunnel too?)
I would appreciate any comments or criticisms. I'm just imagining alternatives...
Chris

Comments rated to be Good Answers:
Comments rated to be "almost" Good Answers: