Here is some information about optimal wind turbine power generation. Wind Turbines are limited by what is called the Betz law. Simply put, if you capture 100% of the energy available in the wind, you stop the wind. The Betz limit says that essentially, if you capture 59.6% of the energy in the wind, that is the best compromise between stopping the air and forcing it to go around your machine.
There is a $24 billion proposal to create a 10 Gigawatt on offshore wind farms and a large power grid for bringing the electricity in and to allow for extra grid capacity to allow for efficient sharing of electricity in Europe