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What does BIPV mean and what are the advantages and disadvantages of BIPV building integrated photovoltaic (BIPV)?

BIPV generally refers to Building Integrated Photovoltaic. BIPV Building Integrated PV (i.e. BIPV Building Integrated PV, PV is Photovoltaic) is a technology that integrates solar power (photovoltaic) products into buildings.

BIPV Building Integrated PV, a new concept in the application of solar power generation, simply means that solar photovoltaic power generation arrays are mounted on the outer surface of the building envelope to provide electricity.

According to the different ways of combining PV arrays and buildings, PV building integration can be divided into two main categories. The other category is the integration of PV arrays and buildings. Such as photovoltaic tile roof, photovoltaic curtain wall and photovoltaic light roof. Among these two ways, the combination of PV arrays and buildings is a commonly used form, especially the combination with building roofs. Since the combination of PV arrays and buildings does not take up additional ground space, it is the best installation method for PV power generation systems to be widely used in cities, and thus attracts much attention.

I. Advantages of BIPV (Building Integrated Photovoltaic)

1?Green energy. Solar photovoltaic building integration produces green energy, is the application of solar power generation, will not pollute the environment. Solar energy is the cleanest and free, the development and utilisation process will not produce any ecological side effects. It is also a kind of renewable energy, inexhaustible.

2, does not occupy land. Photovoltaic arrays are generally installed on unused roofs or external walls, without taking up additional land, which is especially important for expensive urban buildings; summer is the peak season of electricity consumption, but also happens to be the largest amount of sunshine, the photovoltaic system generates the most power, the grid can play a peak shifting role.

3, solar photovoltaic building integrated technology using grid-connected photovoltaic system, do not need to be equipped with batteries, not only to save investment, but also not subject to the limitations of the battery state of charge, you can make full use of the photovoltaic system issued by the power.

4, play a role in building energy saving. Photovoltaic arrays absorb solar energy into electricity, greatly reducing the outdoor temperature, reducing the wall heat and indoor air conditioning cold load, so it can also play a role in building energy efficiency. Therefore, the development of solar photovoltaic building integration, can “energy saving and emission reduction”.

Second, BIPV (photovoltaic building integration) disadvantages

Although solar photovoltaic building integration has high efficiency, economic, environmental protection and many other advantages, and has been used in the World Expo venues and demonstration projects, but the photovoltaic building has not yet entered the common people’s homes, pieces of the technology used in the residential community did not appear. This is due to solar photovoltaic building integration there are several major problems

1, high cost: solar photovoltaic building integration building cost is high. Integrated design and construction of buildings with photovoltaic power generation systems cost more, in terms of research and technology has to be improved.

2, high cost: the high cost of solar power. The cost of solar power is 2.5 yuan per unit, double the cost of conventional power generation of 1 yuan per unit.

3, unstable: solar photovoltaic power generation is unstable, affected by the weather, there is volatility. This is due to the fact that the sun is not available 24 hours a day, so how to solve the volatility of solar photovoltaic power generation and how to store electricity is also an urgent problem.

Translated with DeepL.com (free version)

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