What does BIPV mean and what are the advantages and ...

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.

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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.

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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)

Apr 10, 2018

Building Integrated Photovoltaics (BIPV), describes a PV system, where solar PV modules are integrated within a building’s envelope, as opposed to conventional PV systems where modules are mounted on the top of existing roofs. Though BIPV products have been commercially available since the 1990s in Europe, Tesla’s recent release of aesthetically pleasing and competitively priced BIPV solar tiles has more effectively captured the public’s imagination.

Recent studies have predicted that the global BIPV market is expected to grow to over $9 billion in 2019, and to reach $26 billion by 2022. BIPV roofing is forecasted to be the largest player. They are likely to be shifted away from prestige buildings and towards zero-energy buildings, which are expected to make up the bulk of this market growth, followed by commercial and residential buildings.

Building Integrated Photovoltaics – Benefits

1. Aesthetically appealing blended modules: BIPV modules blends in with the surrounding building envelope e.g.

   Tesla’s solar tiles

   and Nu-lok’s Integrated Solar Inserts, solar windows, façades, pergolas, parking lots and skylights.
2. Flexibility: Building Integrated Photovoltaic solutions comes in for a variety of building types and applications and can be integrated in a multitude of innovate ways which reduces the physical limitations of traditional PV modules.
3. Functional and aesthetically pleasing designs: This is particularly important for public places or heritage buildings, where the conservation of the architectural character forms part of the development application requirements.
4. Increase the prestige and value of the building: The modules within the system can be integrated as elements of the building e.g. Tesla’s solar tiles, increase the value and prestige of a building, improving marketing opportunities and equity value of the property.
5. Environmentally friendly customer satisfaction: BIPV increases customer satisfaction for occupiers who want to be more environmentally friendly or have more energy autonomy.

Limitations of BIPV Systems

Despite the benefits, it’s uptake has been limited due to,

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1. Higher capital cost: System cost is more expensive than typical roof mounted systems due to the cross disciplinary nature of its design and installation.

2. Compliance cost: They require detailed planning, design and have additional complexity in their installation.

3. Slow development: BIPV systems are being sold to the higher end of the market but not to the mass market yet. The investment in its R&D and product development has been slow till recently due to its niche market.