The issue has nothing to do with planes. The 170 windmills are each approximately 426 feet high. The projected long-term savings to New England residents: Over $800M over 20-year design life of project.
Wow. I'm impressed. You're one with the numbers!
So, what are the projected long-term costs to the American taxpayers who are subsidizing these windmills? IIRC, a federal tax credit subsidizes the production of electricity from wind power at the rate of 1.8 cents per kilowatt hour.
The Cape Cod project was what, 420MW? At 100% output, that comes to about $66M per year worth of federal subsidies. Thank heavens the output is more like 30%
The bulk of that 20-year, $800M "savings", therefore, is coming from the rest of us taxpayers. You're welcome.