There is no minimum angle as an absolute value. However, it is recommended that solar panels be installed at a tilt angle of at least 10°. This angle allows rainwater to wash away dust and debris, and it is also referred to as the minimum angle for self-cleaning.
Tiles can get broken, garden pots smashed, and so on. If you notice any damage after the scaffolders have been, but before the solar installation team has arrived, mention this to the person who sold you the solar panel system. They will get it fixed. For small or medium-sized solar panel systems, installation will normally take no more than 1 day.
In the case of most rooftop solar panel installations, the angle is determined by the roof – and fortunately, most roofs in the UK are angled at roughly 30 to 50 degrees. The results in the chart below are the averages of 26 systems in Yorkshire, each with a peak output rating of 4kWp (kilowatt-peak).
If your roof is oriented differently, you will most certainly still notice significant benefits from adding a solar array. East and west-facing rooftops are also acceptable for solar panel installation and will still generate a significant amount of electricity throughout the day.
The size of the solar array you intend to construct determines whether your roof is large enough for solar panels. The minimum panel installation carried out through our group-buying scheme is 4 panels, which at the average size of 1.6 square metres, will come to a required roof space of 6.4 square metres to be eligible.
The tilt angle of the solar panels plays a significant role in your system’s optimal energy production. Solar panel installation in the UK will benefit from angles tilted at 40° more than it would from flat panels. The optimal angle depends on the latitude, and additional seasonal adjustments can be beneficial.