North-facing roof
Solar panels on a north-facing roof.
Short answer: it's usually the harder case in the UK — but not impossible. A north-facing roof generates around 60–70% of a south-facing equivalent. Whether that still pays back depends on your usage, your tariff, and whether you have any other roof options.
Last updated: 8 May 2026.
Check your roof
A Solarable Report shows your likely roof direction, a Solarable Score, and listed installers covering your postcode.
The numbers
What you'd actually generate.
A south-facing 4 kWp system in the UK typically generates around 3,400–4,000 kWh per year. The same system on a north-facing roof in the same location:
- Annual output: roughly 2,200–2,800 kWh — about 60–70% of south.
- Annual benefit: typically £350–£600/year combined (self-consumption savings + Smart Export Guarantee), versus £550–£900 on a south-facing roof.
- Payback: typically 12–17 years — versus 8–12 on south. Still inside the panel lifetime, but a longer wait.
- Lifetime generation: still meaningful — around 50,000–70,000 kWh over 25 years, worth £15,000–£25,000 at typical UK retail rates.
The kit costs the same as a south-facing install, so the cost-per-kWh-generated is higher. That's the heart of why north-facing is the harder case.
Check first
Are you sure your only roof faces north?
Many UK properties have a north-facing main roof but also one of these — and any of them is usually a better solar candidate than the north roof:
- South-facing rear extension. A flat or pitched rear-extension roof can be the strongest option even when the main roof is awkward.
- East or west-facing dormer. Dormers often catch usable east or west sun and reach 80–90% of south output.
- Garage or outbuilding roof. Detached garage with a south-facing slope can carry several panels well.
- Flat roof at the rear. Lets you mount panels at the optimal pitch and orientation. See the flat-roof guide.
- Two-pitch roof with a south-leaning ridge. Many "north-facing" homes actually face north-east or north-west — the south-leaning portion can be the answer.
Enter your postcode below; the Solarable Report estimates your main roof direction from public building data, and an installer survey will confirm all your options.
When yes anyway
When north-facing solar still works.
The north-facing case strengthens when several of these apply:
- Very high electricity bills (above ~£2,000/year). The savings on self-consumption are big enough to overcome the lower yield.
- Time-of-use tariff with a cheap overnight rate. Pairing solar with a battery and TOU lets you arbitrage grid prices regardless of generation.
- Battery storage included. Captures the smaller daily generation for evening use, increasing self-consumption value.
- You're staying long-term (10+ years). Even with stretched payback, the post-payback generation is yours for free.
- You value the carbon impact independent of pure financial payback.
When probably not
When north-facing isn't worth it.
- You're planning to move within 5 years.
- The roof has heavy permanent shade on top of being north-facing.
- Your electricity use is modest and mostly daytime (low self-consumption upside).
- You have other unused roof faces (south, east, west) you haven't considered yet.
- The roof itself is near end-of-life and would need replacing within 5–10 years.
The verdict
So is it worth it?
If your only viable roof face is genuinely north and you're staying long-term: it can still pay back, just slowly. If you have any other roof options at all, look at those first. If you're undecided, the savings calculator will compare both scenarios for your home — north-only vs your best alternative roof.
Common questions
FAQs about north-facing solar.
Are solar panels worth it on a north-facing roof?
Often not the best capital deployment, but not impossible. A pure north-facing roof generates around 60–70% of a south-facing equivalent in the UK. Payback typically stretches by 3–5 years. The case strengthens if you have very high evening electricity use, a time-of-use tariff, or are pairing with a battery.
How much less do north-facing panels generate?
Roughly 30–40% less than the same system on a south-facing roof. A 4 kWp south-facing system in the UK typically generates around 3,400–4,000 kWh per year; the same system on a north-facing roof generates around 2,200–2,800 kWh per year. The kit costs the same, so cost-per-kWh-generated is meaningfully higher.
Should I check if I have any other roof options first?
Yes — almost always. Many UK homes with a north-facing main roof have one of: a south-facing rear extension, a dormer that catches east or west sun, a garage roof, or a flat roof at the rear. These are often better solar candidates than the main roof. The Solarable Report estimates your main roof; an installer survey will identify all your options.
Does a battery help on a north-facing roof?
It can, marginally. A battery doesn't increase how much you generate, but it does help you keep more of what you generate by storing it for later use rather than exporting at low tariff. The bigger lever is your usage pattern and electricity tariff — the savings calculator shows the difference for your home.
When is north-facing solar genuinely worth it?
Three cases: (1) you're paying very high electricity prices and need self-generation regardless of payback period; (2) you have a much larger north roof than south alternatives and the gross output still justifies the spend; (3) you're combining with a flat-roof tilted frame or dormer to escape the north-only constraint. In most other cases, consider whether other roof faces or even waiting are better choices.
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