One has to wonder about the sense of increasing the size of rotors. Allowing that the drive is for increased rotor efficiency the variable speeds encountered by the blades over a population of wind laminations in such a large coverage must surely cause concerns over resulting vibrations of blades and towers. There already exists a small population of disasters. Also the increase in the size of the towers to accommodate these bigger rotors also increases the gap in what is now potentially a spectrum of different winds. Also the population of such towers in a wind farm must be less due to the cover effect.
No doubt costs of delivering electric output to land per unit power produced at sea will decrease, but by how much?
I propose that eliminating the generating nacelle and replacing it with a water pump at the base of the tower means the towers can be lighter and cheaper in construction eg lattice pylons. The water pump being at sea level allows easier servicing and eliminates the inherent problem of servicing the cells at great heights and the inevitable issues of sea water and electricity.
In my concept of an island of water the height provided for turbines thereon (a base some 1,000 above sea level) provides more consistent wind pressure and the island contours will increase that again. The density of turbines can be increased as the contours result in less cover.
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