1. How big a solar power station can be installed on my roof?

At present, domestic roofs are mainly divided into three categories: cement roofs, color steel roofs and tile roofs. However, from the perspective of calculating installed capacity, it can be simplified into two categories: horizontal roofs and inclined roofs.

①Horizontal roof

keyword：Horizontal roof solar mount

Horizontal roofs mainly refer to cement roofs. In some places, flat roofs are poured with asphalt, but such roofs are rare. At present, cement roofs are still dominated by flat roofs.

As the name implies, the horizontal roof means that the roof is flat. When installing photovoltaic modules on this type of roof, it is necessary to construct supporting brackets and set the inclination angle according to the sunlight. Because of the inclination, in order to ensure that the front-row components do not block the rear-row components, there must be space between the two rows of components. Therefore, about 70 watts can be installed on a horizontal roof of one square meter.

②Sloping roof

keyword：Tile roof top solar mounting system

Including color steel roof and tile roof. Some sloping roofs do not need to lay supports and calculate the inclination. The installation can be done according to the inclination angle of the roof itself, so the modules can be filled seamlessly, and the installed capacity will be larger than that of a horizontal roof, but some inclined roofs still need to adjust the angle, so the installed capacity will be similar to that of a horizontal roof. Generally speaking, 70 to 100 watts modules can be installed on a sloping roof of one square meter.

In summary, the following table FYI:

2. How much electricity can be generated every day?

The power generation of the photovoltaic system is affected by many factors, such as the conversion efficiency of the components, the line loss rate of the accessories, dust, shading, etc. Of course, the most affected is the lighting conditions. Therefore, the better the lighting conditions, the greater the power generation. Big. On the whole, the average annual power generation of one watt is conservatively estimated to be between 0.6 and 1.9 kWh. Specifically, you can reply to "power generation" to query the power generation table of various regions.

If it is converted to the average daily power generation of a household photovoltaic power station, take North China as an example, you can refer to the following table.

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