The place is a power plant station in Helsinki. On both chimneys there is a “cassette” which consist of a number of solar panels with a small electric motor and a transmission device. The energy outcome from the panels will be used to transport the “cassette” around the chimney in face with the sun. It will make one lap in 24 hours. The solar panels will then become a fixed point when the earth is rotating. This work has not yet been carried out.