Building integrated photovoltaics is an envelope solution that combines energy generation, net energy demand reduction, and aesthetics. Lighter and semi-transparent technologies made the integration of photovoltaic cells in windows possible, which could not be achieved with traditional silicon technologies. This article aims to propose a new method to measure building energy performance using parametric models, simulation, and the use of genetic algorithms, resulting in a more precise and time-saving process compared to regular methods. Three different geometries and six façade configurations were designed, window-to-wall ratio and orientation were set as variables to optimize energy demand reduction. The software used is Rhinoceros, alongside the plugins Grasshopper, Ladybug, Honeybee, and Galapagos, running all simulations and optimizations in a single platform. Galapagos performs the optimizations, an automatic process that required on average 600 simulations to find the optimal solution, while regular methods take up to 9,720 possibilities. Although the benefits from building integrated photovoltaics vary depending on building geometry and envelope configuration, a net energy demand reduction was achieved in all cases. Such values ranged from 6.76%, reached by low-rise buildings with one photovoltaic façade, to 24.04%, accomplished by mid-rises where all façades had window-integrated photovoltaics.

光伏建筑一体化是一种集发电、减少净能源需求和美学于一体的围护结构解决方案。更轻和半透明的技术使光伏电池在窗户中的集成成为可能，这是传统硅技术无法实现的。本文旨在提出一种使用参数模型、模拟和遗传算法来测量建筑能源性能的新方法，与常规方法相比，该方法更精确、更省时。设计了三种不同的几何形状和六种立面配置，将窗墙比和方向设置为变量以优化能源需求减少。使用的软件是 Rhinoceros，还有 Grasshopper、Ladybug、Honeybee 和 Galapagos 插件，在单个平台上运行所有模拟和优化。Galapagos 执行优化，这是一个自动过程，平均需要 600 次模拟才能找到最佳解决方案，而常规方法需要多达 9,720 种可能性。尽管建筑集成光伏的好处因建筑几何形状和围护结构而异，但在所有情况下都实现了净能源需求减少。这些值的范围从具有一个光伏立面的低层建筑达到的 6.76% 到所有立面都有窗户集成光伏发电的中层建筑达到的 24.04%。尽管建筑集成光伏的好处因建筑几何形状和围护结构而异，但在所有情况下都实现了净能源需求减少。这些值的范围从具有一个光伏立面的低层建筑达到的 6.76% 到所有立面都有窗户集成光伏发电的中层建筑达到的 24.04%。尽管建筑集成光伏的好处因建筑几何形状和围护结构而异，但在所有情况下都实现了净能源需求减少。这些值的范围从具有一个光伏立面的低层建筑达到的 6.76% 到所有立面都有窗户集成光伏发电的中层建筑达到的 24.04%。