From the perspective of power generation, flat roofs are economically advantageous:

1、可以按照佳角度安装，获得大发电量;

1. Can be installed at a good angle to obtain large power generation;

2、可以采用标准光伏组件，具有佳性能;

2. Standard photovoltaic modules can be used, with excellent performance;

3、与建筑物功能不发生冲突。

3. There is no conflict with the functionality of the building.

4、光伏发电成本低,从发电经济性考虑是的佳选择。

4. Photovoltaic power generation has low costs and is a good choice from the perspective of power generation economy.

斜屋顶，南向斜屋顶具有较好经济性：

A sloping roof, facing south, has good economic benefits:

1、可以按照佳角度或接近佳角度安装，因此可以获得大或者较大发电量;

1. It can be installed at a good angle or close to a good angle, thus obtaining large or large power generation;

2、可以采用标准光伏组件，性能好、成本低;

2. Standard photovoltaic modules can be used, with good performance and low cost;

3、与建筑物功能不发生冲突。

3. There is no conflict with the functionality of the building.

4、光伏发电成本低或者较低，是光伏系统优选安装方案之一。其它方向(偏正南)次之。

4. Low or lower cost of photovoltaic power generation is one of the preferred installation options for photovoltaic systems. Other directions (due south) take second place.

光伏幕墙，光伏幕墙要符合BIPV要求：除发电功能外，要满足幕墙所有功能要求：包括外部维护、透明度、力学、美学、安全等，组件成本高，光伏性能偏低;要与建筑物同时设计、同时施工和安装，光伏系统工程进度受建筑总体进度制约;光伏阵列偏离佳安装角度，输出功率偏低;发电成本高;为建筑提升社会价值，带来绿色概念的效果。

Photovoltaic curtain walls should comply with BIPV requirements: in addition to the power generation function, they should meet all functional requirements of the curtain wall, including external maintenance, transparency, mechanics, aesthetics, safety, etc. The component cost is high and the photovoltaic performance is low; The progress of photovoltaic system engineering is constrained by the overall progress of the building, as it requires simultaneous design, construction, and installation with the building; The photovoltaic array deviates from the optimal installation angle and has a low output power; High power generation costs; Enhance the social value of buildings and bring the effect of green concepts.

光伏天棚，光伏天棚要求透明组件，组件效率较低;除发电和透明外，天棚构件要满足一定的力学、美学、结构连接等建筑方面要求，组件成本高;发电成本高;为建筑提升社会价值，带来绿色概念的效果。

Photovoltaic ceiling requires transparent components with low efficiency; In addition to power generation and transparency, ceiling components should meet certain architectural requirements in terms of mechanics, aesthetics, structural join, and the cost of components is high; High power generation costs; Enhance the social value of buildings and bring the effect of green concepts.