Direction & shading
North-facing balcony solar: is it worth it?
South is the best direction for solar in the UK, so a north-facing balcony is the hardest case. It isn't useless — but it does generate noticeably less, and it's worth being realistic before you commit.This guide explains what to expect and when a north-facing spot can still be worth it. For the underlying rules, see direction and angle.
Written and edited by Christopher Panteli
Christopher is the founder and editor of MyPlugInSolar. He oversees the site’s research standards, data tools and editorial process. He is not an electrician or solar installer, and specialist technical claims are sourced from official documentation or reviewed by appropriately qualified professionals.
Why north-facing is the hardest case
In the northern hemisphere the sun tracks across the southern sky, so a surface facing north is turned away from it for most of the day. A north-facing panel therefore captures mainly diffuse light scattered from the sky rather than strong direct sun. It still generates something, but far less than the same panel facing south — and a vertical railing mount, common on balconies, makes the gap wider. See vertical solar panels for the tilt side of this.
When it can still make sense
A north-facing balcony can still be worth it if the economics work at the lower output, if the panel actually catches some morning or evening sun from the side, or if you can angle it slightly toward east or west rather than flat north. The honest test is to estimate the output for your exact orientation and tilt with the calculator and judge it against the system cost and your daytime base load.
Be realistic
Getting the most from a north balcony
- Angle the panel toward east or west if the railing and rules allow, rather than flat north.
- Keep the panel clear of railings, plants and furniture that add shading.
- Match your usage to daylight so you actually use what little is generated.
- Consider whether a wall or other spot on the property faces a better direction.
Frequently asked questions
- Do north-facing solar panels work in the UK?
- They work, but produce much less than south-facing panels because they see little direct sun and rely on diffuse sky light. Whether that's worth the cost depends on your exact setup — estimate the output for your orientation before deciding.
- How much less does a north-facing panel generate?
- Significantly less than a south-facing equivalent, and a flat vertical north mount is the weakest case of all. The exact figure depends on tilt, shading and location, so use a location-specific estimate rather than a rule of thumb.
Sources
- 1. PVGIS (Photovoltaic Geographical Information System) — European Commission, Joint Research Centre
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