Do solar power shingles work in the summer?

The ideal temperature for rooftop PV power generation is usually around 25°C. Although PV modules can still work at higher temperatures, the operating temperature has a significant impact on their power generation efficiency. Here is some important temperature-related information:

The effect of temperature on the power generation efficiency of solar power shingles

Temperature coefficient of PV modules:

Photovoltaic modules typically have a temperature coefficient that indicates the percentage decrease in output power for every 1°C increase in temperature under standard test conditions (at 25°C). For example, a module with a temperature coefficient of -0.4%/°C means that for every 1°C increase in temperature, its output power will decrease by 0.4%.

Excessive temperature effects:

When the temperature of solar power shingles exceeds 40°C, the power generation efficiency starts to decrease significantly. Especially in hot weather or in direct sunlight, solar power shingles can reach temperatures of 60°C or more.

Efficient heat dissipation:

In order to keep solar power shingles in a more favorable temperature range, it is important to have a reasonable heat dissipation design. Good ventilation and clean components can both help to reduce the operating temperature. sgbsolar's solar power shingles are mounted on tile hanging strips with a 10-15 cm gap from the roof surface, which provides good air circulation and achieves heat dissipation.

Optimal operating temperature:

Most photovoltaic modules work best at 25°C. This temperature range ensures that solar power shingles have a good power generation efficiency.

Response to high temperatures:

In summer, if the ambient temperature is high, cooling measures are essential. Air flow management and regular cleaning of the modules can help to reduce module temperatures and maintain power generation efficiency.

Summarizing

In summer, although the light intensity is higher than other seasons, the power generation efficiency of rooftop PV systems is affected by the ambient temperature. The ideal temperature for power generation is 25°C, above which the efficiency is significantly reduced. Therefore, homeowners should not be overly concerned. Effective heat dissipation and maintenance measures are essential to improve the overall power generation performance of the PV system.

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