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

1、可以按照佳角度安裝，獲得大發電量;

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

2、可以采用標準光伏組件，具有佳性能;

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

3、與建筑物功能不發生沖突。

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

4、光伏發電成本低,從發電經濟性考慮是的佳選擇。

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

斜屋頂，南向斜屋頂具有較好經濟性：

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

1、可以按照佳角度或接近佳角度安裝，因此可以獲得大或者較大發電量;

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

2、可以采用標準光伏組件，性能好、成本低;

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

3、與建筑物功能不發生沖突。

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

4、光伏發電成本低或者較低，是光伏系統優選安裝方案之一。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.

光伏幕墻，光伏幕墻要符合BIPV要求：除發電功能外，要滿足幕墻所有功能要求：包括外部維護、透明度、力學、美學、安全等，組件成本高，光伏性能偏低;要與建筑物同時設計、同時施工和安裝，光伏系統工程進度受建筑總體進度制約;光伏陣列偏離佳安裝角度，輸出功率偏低;發電成本高;為建筑提升社會價值，帶來綠色概念的效果。

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，光伏天棚要求透明組件，組件效率較低;除發電和透明外，天棚構件要滿足一定的力學、美學、結構連接等建筑方面要求，組件成本高;發電成本高;為建筑提升社會價值，帶來綠色概念的效果。

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.