409 Wind power
This exhibit demonstrates how much power a wind power plant (3 MW) can generate. The table i covered by a semitransparent map over a city. The visitor first selects a wind speed and sees the turbine being lit by a couple of LED's. She/he makes a guess on how big part of the city the power plant can supply with electricity. When she/he pushes the right button the corresponding area of the city will be lit from below.
Then the visitor tries another wind speed.