Didn't see it first, then saw the sea placed wind turbines.
Something like that, far enough from the shore you can't see them and strategically placed in a spot that has the most wind.
The latest wind turbines get up to 400+ feet high, and can generate each 9 MW, rotor diameters up to 180 meters...
http://www.windpowermonthly.com/10-biggest-turbines
8 to 9 MW is enough to power 10.000 homes.
The world's largest wind turbine is being constructed in Denmark following the completion of the enormous rotor blades that will power it.
Just one of its three blades stretches more than 290 feet and when complete it will be able to provide power for a small town of more than 10,000 homes.
The Adwen AD8-180 will stand on a mast more than 295 feet (90 metres) tall when its installed, engineers say.