From 262 feet in the air, 90 General Electric towers rise over Wheatland County, Montana, generating electricity for portions of the northwest United States. With an installed capacity of 135 MW, the Judith Gap Energy Center is one of the strongest wind farms in Montana. The blades begin spinning when winds reach just eight miles per hour, and at their highest point, tower almost 400 feet above the ground. In this photo, the wind turbines rotate while overlooking Wheatland County's main agricultural product: wheat. | Photo courtesy of Idaho National Laboratory Wind Energy Program.