An excavator cuts a power line, so that children have suddenly loses power. Fortunately Kati has built an electricity-O-Mat, which can generate electricity from solar panels, a wind and a water wheel.

Your task is to align the solar panels to the sun and the wind turbine according to the wind direction. In calm weather, that's no problem. But on some days one can already be dizzy, so quickly the weather changes. When it rains and the hydroelectric plant can generate electricity. For this purpose, it must however be switched on.