Dug up some better info from
Baryonyx Corp, which is planning three wind farms in Texas, two of which will be offshores.
According to their FAQ, one 6 megawatt turbine can power approximately 1,400 Texas homes.
Their Mustang offshore project is suppose to install between 170-225 6MW turbines, which can power between 245,000 to 320,000 homes.
So going by their data, if Michigan has enough offshore area to produce 321,000 megawatts of power, assuming they install 6 megawatt turbines that would mean erecting 53,500 turbines offshore (goodbye, skyrats).
If each turbine can power about 1,400 homes, that means those 53,500 turbines could in theory power up to nearly
75 million homes

They could help power the whole friggin' Midwest.
Here's a
Google Image search for "offshore wind farm" to give you all an idea of how they look. Obviously some of the zoomed in pictures will give a false appearance that these turbines are huge, while ones taken from the air show them much smaller, so use your best judgment.
Honestly, here in Marquette, Granite Island is like eight miles NNW of Presque Isle Park and unless it's a clear day, you can barely...if even...spot the small island that has a lighthouse. So you throw these turbines out about 8-10 miles and you probably won't notice a thing on shore (unless you're on top of Sugarloaf), and if you do it'll probably be almost unnoticeable.
Keep the research going and hopefully they can get a power company to build a small offshore wind farm to see how feasible it is as a long term solution.