Far from being an aggressive presence in its neighbordood of the district of Vallecas, in the city of Madrid, the e-chimneys of this factory for the production of energy by cogeneration tries to give shape to what is a public space in every sense, so the surroundings have been urbanized in such a way that a pleasant place for neighborhood life is created, and the structure of the chimneys has been used to raise a light permeable mesh that gives protection against radiation while allowing natural ventilation. Hence, 48 units of ducts for steam escape and air take-in are grouped in six large chimneys rising up to 38 meters, formed by a mast 30 centimeters in diameter combined with several compression rings that absorb horizontal pressures. Over these rings formed by steel tubes, a porous and resistant canvas is stretched, made of polyvinyl chloride-coated polyester fiber woven with optic fiber to give the surface its reflecting properties.