This work describes a methodology to optimize solar incidence in photovoltaic facades of multi-floor buildings. The methodology identifies and parameterizes the building volume according to geometric principles of photovoltaic capture for all facades orientations. Initially, geometric modeling is made through an algorithm developed in a graphic-algorithm editor, Grasshopper - integrated with the modeling tool, Rhinoceros - then establishing the shape restrictions and variables. Secondly, twist and taper geometric transformation is correlated with solar incidence data through the interface of genetic platform, Galapagos. The results indicate that it's possible explore the method to obtain: optimal solutions, reduced design time and better energy performance.