Nuage Vert
Nuage Vert, or Green Cloud, is a public art installation by artists HeHe performed in Helsinki in 2008 in collaboration with Helsinki Energy. By projecting green light onto the smoke emitted from a city power station the changing output of the station is visible. This provided a means for communicating the results of efforts to reduce energy use in the district, whereby campaigns to turn off lights, and so forth, had visible effect.Helsinki Energy initiated a release of real-time energy information as a result. A clever and simple way to provide a feedback loop to the public, Nuage Vert looks is seeking funds to do the same in Paris.