> As jabl says, it is a question of the surface area of the blades. Not just the surface area, but also altitude from ground. Unlike solar panels, wind turbin

> As jabl says, it is a question of the surface area of the blades. Not just the surface area, but also altitude from ground. Unlike solar panels, wind turbines really want to be big. The cost/watt goes down rapidly as the size of the unit increases -- the reason for the cost of wind electricity being driven as low as it is is basically that the turbines have been made larger.