BIPV (that is, building photovoltaic integration) has been very popular in the past two years, mainly because with the promotion of the "double carbon" goal, distributed photovoltaic has begun to play an increasingly important role. The development of distributed photovoltaic has given birth to two types of building photovoltaic forms, BAPV and BIPV. BIPV technology has more advantages than BAPV, so its application space is broader. In the past year, various policies have been favorable to the development of BIPV, and the concept of BIPV has gradually been known to everyone.

In this context, everyone is curious about BIPV, what is BIPV building photovoltaic integration? What will be the future development trend of BIPV? How much market space is there?

The development time of photovoltaic is relatively short, that is, 20-30 years, so the standard is still in short supply. Previously, the standard of photovoltaic was the standard of power system. Building is very considerate of personal safety, which is the most important point. In order to cultivate cross-border and cross-industry talents, BAPV and BIPV are all called photovoltaic building integration. The real experts in this industry are still in the future.

From the upstream point of view, architects should consider the design of structural structure, product design, energy-saving design, physical performance design, lightning protection, electricity protection, cleaning function and so on. Midstream is to make products, not to mention photovoltaic modules, but also inverters, various supports, various power system monitoring, etc. There is also construction to assemble them. When the equipment is assembled, the downstream is operation and maintenance. But from the photovoltaic point of view, including components, inverters, power equipment, cable brackets, monitoring systems, operation and maintenance of intelligent platform and so on.

Long-term reliability is also very important. Therefore, everyone must have that concept whether to do photovoltaic or from buildings. Now many people who do photovoltaic still calculate how many installed machines I have, then how much money I spend per watt, then my installation cost is so much, my input cost is so much, and then how many kilowatt-hours of electricity I generate every year, for example, according to theoretical calculation, Zhejiang has about 1000 watts of electricity per hour, then multiply it by the revenue per watt per kilowatt, and then divide it by the recovery cycle, which is very wrong.

Special attention should be paid to its durability, and the quality of its installation and operation and maintenance directly affects this part. Therefore, in order to have good construction quality, the products should be of long durability. Many materials may not live for so many years. In the middle, replacement is not only an increase in cost, but also very troublesome and will bring maintenance costs.

The third is the intelligent part. This piece becomes particularly important in architecture. It is possible that the conventional photovoltaic is a little common to find it when it does not generate electricity, or the owner asks for help and responds to the owner 24 hours a day, or actively tells the owner that it does not generate electricity and can help check it. However, the building cannot be like this. If you look at it wrong at any time, you must start to do it quickly. Otherwise, the impact will be great, because the building is part of people's life, so this piece of it, so it is still very important.

Now photovoltaic enterprises are in the direction of production, to the direction of the product is to scale. The building is different from other products. It is customized. The building owner will not build a building exactly like the building next to it. But photovoltaic and hope that a product can adapt to different buildings. This is the contradiction between the customization of buildings and the scale of photovoltaic. So how to solve this problem? Advocate the road of economization, don't want to be different in all buildings. Of course, it can also be appropriately innovated. If you want to be a landmark building, it will definitely cost money. For example, if you order a BMW, you can add money to buy some customized products. The same is true of architecture, which must be personalized at a greater cost. Therefore, the direction of future productization is to make both standardized products and customized products.

Now certainly the first is to do the roof, first of all, the roof is large, and easier to do. The roof of the industrial plant is not only a problem of power generation, but also a protection of the roof. It can be said to be an upgrade, giving the roof another layer of physical performance protection, including thermal improvement. A good photovoltaic building integrated plant roof can even drop 10 degrees below the plant, which is a huge contribution to energy saving. In fact, this must be the first demand, and now the emergence of one of these factories has attracted countless attention. Including the current rural roofing, now due to the promotion of the whole county and so on.

Second, if the roof cannot be sustained, it will be divided up by everyone in the end, and finally it must return to the problem of the facade. But the facade is not simple, it definitely does not mean that it can be solved in a few years like the roof. The facade involves too much scope, and the safety problem is also higher. In case there is a mishap on the roof, there is still a layer of roof blocking it. If there is a problem with the facade, it may be smashed down soon. This is a big problem.

The facade also has one of the biggest difficulties, beauty, which is a great challenge. However, photovoltaic people are really very tenacious and have already made color. Photovoltaic people do not know what kind of color architects need. For example, buildings always need to talk about high-grade ash. What is high-grade ash? This is an aesthetic problem. There is also a problem of experience. Just imagine, if you install a dark thing outside your window, you certainly don't like it. Therefore, photovoltaic is also developing continuously now, making this thing transparent again. With the continuous development of new materials, as well as the conversion rate continues to improve, but also to the application of the facade has made space. In the past, when photovoltaic was used on the facade, it would inevitably bring about losses, usually 40% in the south direction. However, if the conversion rate is high, even if the conversion rate is 50%, there is still a 15% conversion rate, which is equivalent to the application of roofing two years ago. Therefore, with the progress of technology, the application of photovoltaic buildings will definitely be promoted.

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