My group of 4 is doing abig project about wind energy, wind energy is basicly  one of the renewable energy sources, and also dosent pollute the air. The way you get wind to produce energy is to make a wind turbine. This is how it works: The main places you would put a wind turbine is areas that have high levels of wind. When the wind hits the turbine it causes the massive blades to move in a straight direction, causing them to make electricity. But that only creates 18rpm which is not even enough to power a house. But the wind that hits the blades travels to the generator inside the windmil and then generates 1800rpm of energy which is enough to power 10 houses forever. But if you count how much wind farms there are in the world you can power a gigantic amount appliances that need electricity. And also heaps of Houses. This is also one of the most used renewable energy sources in the world.