12Gw == 12,000Mw. Off a quick lookup, 2Mw of wind requires 1.5 acres of land. A little arithmetic, some rounding up, and we need, say, 10,000 acres of wind powe

12Gw == 12,000Mw. Off a quick lookup, 2Mw of wind requires 1.5 acres of land. A little arithmetic, some rounding up, and we need, say, 10,000 acres of wind power, around 15 square miles. But you'll raise an objection, so double that. And then you'll raise another objection, so double it again, and sooner or later, we're up to 100 square miles of windmills. The city of Moscow alone is 970 square miles. For point of comparison, Minnesota produced 3500Mw of wind in 2016, from wind farms mostly in the southwest part of the state. There's lots and lots of land left for more wind farms.