It might have costed me $48,000 dollars, but it was worth it because it's helping the environment by not using fossil fuels and it pays for it self because I don't need to pay for electricity anymore.
But how does a wind turbine even work, and how many people actually use one?
Oh that's simple. A wind turbine works because when wind's kinetic energy turns the propeller like blades around a rotor that is connected to the main shaft that spins a generator that makes energy.
Oh and the answer to your other question is 50,000 people are employed in the U.S. Wind industry, and wind powers 4.7% of America.