Do Solar Panels Work on East or West Facing Roofs?
Many homeowners assume solar panels only work well on south-facing roofs.
In reality, east and west facing roofs can still perform very well in the UK — and in some cases can be a better match for how electricity is used in the home.
Do Solar Panels Need to Face South?
South-facing roofs generally produce the highest total energy over the year, but they are not essential for a successful solar installation.
East and west facing systems typically produce around:
- 80% to 90% of the output of a south-facing system
That means solar is still very worthwhile for most properties, even without a south-facing roof.
How East and West Facing Solar Panels Perform
The main difference is not just how much electricity is generated, but when it is generated.
- East-facing panels: generate more in the morning
- West-facing panels: generate more in the afternoon and evening
This can actually be beneficial for households where electricity use is spread throughout the day.
Is East-West Better for Some Homes?
In many cases, yes.
A split system across east and west roof faces can:
- Provide more consistent generation throughout the day
- Better match morning and evening electricity use
- Reduce the need to export excess energy at midday
This can improve how much of your solar energy you actually use in the home.
Roof Pitch and Angle Still Matter
Roof angle also affects performance.
Most UK roofs are already at a suitable pitch for solar, and east or west facing roofs at typical angles still perform well throughout the year.
What About Shading?
Shading has a bigger impact than orientation in many cases.
Trees, chimneys or nearby buildings can reduce performance, so proper system design and panel layout are important.
This is why a survey is always recommended rather than relying on general rules.
Battery Storage and East-West Systems
Battery storage works well with east-west systems because generation is spread more evenly across the day.
This can reduce peak imports and improve self-consumption, especially for households that are occupied during mornings and evenings.
If you're considering this, you may also want to read our guide on solar battery storage costs in the UK.
Is Solar Still Worth It Without a South Facing Roof?
In most cases, yes.
Even with slightly lower total output, east and west facing systems still provide strong savings over time and help reduce reliance on grid electricity.
For a full breakdown, see our article on Is Solar Worth It in the UK?.
Solar Installation in Worthing and West Sussex
Speedy Fit installs solar PV and battery systems across Worthing and West Sussex, designing systems to suit the roof, the property and how electricity is used.
If you have an east or west facing roof and want to know what is possible, get in touch for a quote or advice.