An introduction to seasonal and daily Solar P.V. Generation variations

When does solar generate the most electricity?

If you want to make the most of your residential solar panels, it's essential to know when they generate the most electricity. In this brief guide, we'll shed light on when your solar panels shine their brightest.

Daylight Hours

Solar panels generate electricity during daylight hours, from sunrise to sunset. However, the key to harnessing the most energy lies in maximising the exposure to sunlight. The UK experiences varying daylight hours throughout the year, with longer days in summer and shorter days in winter. This directly affects your solar panel's performance.

Daily weather variations mean you will have peaks at certain times for energy generation

Seasonal Variations

Solar power output in the UK peaks during the sunnier months, generally from April to September. With extended daylight hours and the sun positioned higher in the sky, your panels will receive more sunlight, resulting in increased electricity production. Conversely, during the winter months, when daylight hours are shorter, energy generation may be less.

Peak Sunlight Hours:

The time of day matters too. Solar panels are most productive during peak sunlight hours, which typically occur between 10 a.m. and 4 p.m. The sun's intensity is at its peak during this period, allowing your panels to work most efficiently. If you aim to make the most of your solar energy system, consider scheduling energy-intensive tasks during these hours.

Optimal Panel Placement

Proper panel placement is crucial for maximising electricity generation. Solar panels are typically installed at an angle of around 30-40 degrees to align with the sun's path in the sky. South-facing panels tend to receive the most direct sunlight in the Northern Hemisphere, which includes the UK. Ensuring your panels are unobstructed by shading from nearby buildings or trees is also essential. This is the theory, in reality there are limitations to placement of the panels, based on the orientation of the roofs of your property and the slopes of them. That said, utilising the best option/s you have available to you, in accordance with this criteria will optimise the system generation.

Weather Factors

Weather conditions, such as cloud cover, rain, and fog, can affect solar panel performance. Cloudy days may reduce electricity production, while clear, sunny days will enhance it. Be aware of these weather patterns and their potential impact on your solar energy system. It is important to note though, that contrary to some beliefs, solar doesn’t need direct sunlight or brilliant sunshine to generate electricity. Daylight is enough for your system to generate, and whilst it won’t generate as much compared to a beautiful sunny day, you will still generate on a grey cloudy day.

In conclusion, solar panels in the UK generate the most electricity during the sunnier months, with peak production occurring during the sunniest hours of the day. To optimise your solar panel system, it's essential to consider these factors and ensure your panels are well-placed and maintained. By making the most of the sunlight available, you can enjoy the benefits of clean, sustainable energy while reducing your reliance on the grid.