As we become increasingly aware of the importance of sustainable energy sources, solar panels have emerged as a reliable means to harness the power of the sun. However, while solar panels are robust and designed to withstand various weather conditions, factors such as rain, snow, humidity, and temperature can significantly influence their performance.

Recently, Sydney has experienced unpredictable weather patterns, ranging from prolonged sunshine to unexpected heavy rains and storms. These fluctuations underscore the need for homeowners and businesses to understand how such weather conditions can impact solar panel efficiency.

At MPV Solar, we emphasise the importance of understanding these effects to fully maximise the advantages of your solar investment.

The most direct factor influencing solar panel performance is sunlight. Solar panels generate electricity by converting sunlight into energy, so naturally, more sunlight means more power. In regions with consistent sunlight, solar panels can perform at their maximum capacity.

However, cloudy or overcast days can reduce energy production significantly, sometimes by as much as 25-50%. Despite this, it’s important to note that solar panels can still produce electricity on cloudy days, just at a diminished rate.

While it might seem counterintuitive, solar panels actually perform better in cooler temperatures. High temperatures can lead to a decrease in the efficiency of the photovoltaic (PV) cells, potentially reducing their output.

When temperatures rise, the energy yield can decrease as much as 10%. Therefore, cooler climates can often yield better overall solar power generation, especially during peak summer months.

Rain can be beneficial for solar panels, as it helps to wash away dirt, dust, and debris that can block sunlight. Clean panels are more efficient, and light rain can actually increase their output, especially in arid regions where dust accumulation can be a problem.

On the other hand, snow introduces different challenges. While a light dusting of snow generally melts away quickly and doesn’t significantly impact performance, heavy snowfall can cover panels and reduce their ability to capture sunlight. However, most solar panels are designed with a smooth surface and a slight tilt, which helps snow slide off more easily.

Wind can have a positive or negative impact on solar panel efficiency. On the one hand, strong winds can help cool down solar panels and improve their performance on hot days. On the other hand, extreme weather conditions, including high winds and storms, could pose structural risks to solar installations. Proper mounting and installation are crucial to mitigate such risks.

Humidity levels can affect the performance of solar panels as well. High humidity can lead to the accumulation of moisture on panels, which in some cases can obstruct panel efficiency. Moreover, areas with heavy dust can see a significant impact on output due to dust build-up, highlighting the need for occasional cleaning.

At MPV Solar, we offer specialised maintenance and cleaning services for solar systems.

Regular panel cleaning is essential for maximising power output, enhancing both efficiency and performance, and increasing the lifespan of your panels, ensuring you get the most out of those sunny days.

At MPV Solar, we not only specialise in installation but also provide professional solar panel cleaning services for residential properties, guaranteeing that your panels operate at peak performance.