What is the Best Angle For Solar Panels?
The angle and direction of your solar panels have a direct impact on how much energy they produce. In the UK, south-facing panels generally perform best, with an ideal tilt of roughly 35–40° depending on where you live. Because the sun's position shifts through the seasons, most fixed home systems are set to capture the best year-round average.
Why the Angle of Solar Panels Matters
The way your panels are angled affects how directly sunlight hits them, and an improper angle reduces efficiency. Ideally panels should align with the sun's position to maximise energy production during peak hours. A University of York study found that the best angle to keep your solar panels at is 39° across a full year.
Does the Best Angle Change With Location?
Yes — the further you are from the equator, the steeper the angle should be, and local weather and seasonal sun positions matter. Optimal year-round tilts vary across the UK: 35.9° in the South East, 36° in Greater London, 36.3° in Wales, 37.2° in Northern Ireland and 37.8° in Scotland.
Does It Change Throughout the Year?
The sun's position shifts with the seasons — sitting lower in winter and higher overhead in summer. Most UK domestic systems stay fixed and are optimised for average year-round performance rather than peak seasonal efficiency. Seasonal angles can swing widely; in Greater London, for example, the ideal ranges from 21° in summer to 51° in winter.
Which Direction Should Panels Face in the UK?
In the UK, south-facing panels generally offer the best performance, while south-east and south-west orientations also work reasonably well. Panels that face south can produce up to 20% more energy than those facing east or west. North-facing panels tend to underperform unless battery storage is available.
Roof-Mounted Solar Panels
Roof-mounted panels are attached directly to the roof using brackets, usually following the slope of the roof. This approach is space-efficient and affordable, making it the most common choice. Flat roofs offer an added advantage, allowing panels to be angled optimally for year-round sunlight.
Ground-Mounted Solar Panels
Ground-mounted systems give you more flexibility because the panels can be installed at the best angle and direction, no matter how your building is arranged. The trade-off is that they require more space and may need local authority permission. Because home layouts differ, a professional assessment is recommended to get placement right.
