Will the dormer shade my panels?

Potentially — especially in winter mornings/evenings when the sun is low. Micro-inverters (£800-£1,200 extra) ensure only shaded panels are affected, not the whole system.

Should I put panels above the dormer?

If space allows: yes. Panels above the dormer are unshaded and at optimal angle. 2-4 panels above + 4-6 panels beside = a productive system despite the dormer.

What about panels on the dormer cheeks?

The vertical sides (cheeks) of a dormer are usually too small and poorly angled for standard panels. In rare cases, small flexible panels might work, but it's generally not worthwhile.

Solar with Dormer Windows

By Home Solar Guide Team|Updated 18 March 2026|guide

Independently written | Evidence-based | Sources cited

Solar dormer windows — Dormers reduce roof space but panels fit around them — good design maximises output.

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Can I install solar with dormer windows?

Solar panels with dormer windows: dormers reduce available roof area but panels can be installed around them effectively. IMPACT: a single dormer removes space for 2-4 panels. Multiple dormers may significantly limit one roof face. SOLUTIONS: (1) Install panels on the non-dormer roof face. (2) Place panels above and beside the dormer. (3) Use micro-inverters or optimisers — panels in different positions perform independently. (4) Use the other roof face (if suitable orientation). SHADING: dormers cast shadows on nearby panels, especially in winter (low sun angle). Micro-inverters minimise this impact. DESIGN: your installer creates a panel layout that maximises output while respecting the dormer. Computer modelling shows optimal placement. Most homes with dormers can still fit 6-12 panels (2.4-4.8kW) — enough for meaningful savings.

Frequently Asked Questions

Related: Home Heating Systems

Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.

heat pump running costs in the UK

Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.

From our sister site Home Heat Pump Guide