Solar updraft tower

A solar updraft tower is like a big wind tower that uses the Sun's energy to make electricity. It has a tall cylinder (like a round tower) with a greenhouse on top. The Sun's heat enters the greenhouse and makes the air inside hot. The hot air rises up and out of the tower and makes the blades on a fan turn, which creates electricity. It's like using the Sun's energy instead of the wind to power a wind turbine.