The Solar Tower in Sociópolis, Valencia, is based on the same preliminary sketch as the Tour Porte de la Chapelle project, in an attempt to distance social housing developments from the anonymous iconographies by exploring the possibilities of a tower with a unique, fragmented crown, multiplying the number of exterior and interior spaces with an identity of their own. The tower’s height favors cross ventilation, an environmental approach that, in the humid and sunny climate of Valencia, becomes the essential passive strategy. At the same time, the financing of social housing based on the interior area makes it almost unfeasible to consider environmental strategies based on intermediate spaces and filters. The most practical strategy – and which favors panoramic views – is to combine the reduction of thermal gain via ventilated reflective facades with cross ventilation placing double-orientation dwellings and fully operable windows with high-performance thermal glass. This building system makes the most of Valencia’s good climate to obtain an average of 300 days of passive comfort. The building has obtained the maximum environmental certification provided by the Valencian Institute of Construction (IVE).