What does the windmail do?

A windmill spins around in a circle and the wind pushes against the windmill to make it spin around in a circle. Also, when it spins it makes energy it helps with the electricity. For an example: All the energy that comes from the windmill goes to power lines or solar panels and the power lines and solar panels send the energy to TV cords or light switches allowing the TV or lights to work by just simply using the energy from the windmills.