What determines the amount of electricity generated by a rooftop power station? Mar 21, 2024

For photovoltaic power stations, every additional kilowatt hour of electricity generated means more revenue per kilowatt hour of electricity.

Many people believe that photovoltaic power stations of the same size should have the same power generation capacity. In fact, there are many determining factors.


Lighting and environmental impact in the area

Photovoltaic power stations rely on solar radiation to generate electricity. The greater the intensity of solar radiation, the higher the power generation capacity of the photovoltaic power station.


Data show that more than 2/3 of the regions in my country have more than 2,000 hours of sunshine per year and are rich in solar energy resources. Depending on the latitude and the amount of solar radiation, the power generation capacity of the photovoltaic power station is determined.


In addition to differences in solar energy resources, the humidity and temperature in various regions will affect the power generation of photovoltaic power stations. In particular, particulate matter in air pollution, also known as smog, can reduce photovoltaic power generation efficiency by more than 17%. According to calculations, in hazy cities, the power generation of photovoltaic power stations is obviously low. And when the haze is severe, photovoltaic power stations cannot even generate electricity.


Quality factors of photovoltaic power plants

Environmental problems are difficult to change, but a high-quality photovoltaic power station will definitely generate more electricity than a low-quality power station. Various devices, from silicon materials to components, and from components to inverters, all play a decisive role in power generation.


Photovoltaic module quality

As the core component of a photovoltaic power station, the quality of photovoltaic modules plays a decisive role in the power generation capacity of the power station. The quality of photovoltaic modules is ultimately linked to their service life and efficiency. First of all, the photoelectric conversion efficiency of photovoltaic modules represents the power generation capacity of the module, so the higher the efficiency of the module, the higher the power generation capacity of the power station.


In addition to efficiency, the quality of photovoltaic modules is more reflected in various aspects such as anti-attenuation and anti-aging. Inferior photovoltaic modules are prone to problems such as cracks and backplane aging. Once such problems occur, the efficiency of the photovoltaic modules will drop significantly, resulting in low power generation of the power station.


What's more, it is also very important that many power station users do not understand the operating principles of photovoltaic power stations and use them as boards to dry things, such as quilts, shoes, dried food, and peppers... This will block the components and affect the conversion of solar energy into current. If it is small, it will reduce the income of power generation; if it is large, it may even risk damaging the components.

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