BrightGridRoof orientation affects how much sunlight solar panels receive throughout the year. However, there is no single orientation rule that applies equally to every property.
South-facing solar panels
South-facing roofs are traditionally favourable for annual solar generation in the UK. They can provide strong output across the middle of the day.
East and west-facing solar panels
East-facing panels generally produce more electricity earlier in the day, while west-facing panels can produce more later in the afternoon. An east-west array can therefore spread generation across the day.
North-facing solar panels
North-facing roofs can sometimes be used, particularly where the roof is relatively shallow and the expected generation remains financially attractive.
Why roof pitch matters
The angle of the roof changes the relationship between the panels and the sun. This means orientation should always be assessed alongside roof pitch.
| Roof direction | General characteristic |
|---|---|
| South | Strong annual generation potential |
| East | Useful morning generation |
| West | Useful afternoon generation |
| East-west | Broader generation across the day |
| North | Requires more careful modelling |
Model your roof orientation
We can assess roof direction, pitch and shading before recommending your solar layout.
Check Your RoofFrequently asked questions
What direction should solar panels face in the UK?
South-facing roofs are traditionally favourable for annual generation, but east, west and other orientations can also work well depending on the property.
Are west-facing solar panels worth installing?
Yes. West-facing panels can provide useful afternoon and evening generation.
Are north-facing panels always unsuitable?
No. Their suitability depends on roof pitch, shading, expected generation and the overall economics.
Thomas Ellison
PV Design Engineer at BrightGrid Energy
