How Much Roof Space for Solar?
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How much roof space do I need for solar?
Each solar panel needs approximately 2m² of roof space (1.7m² panel + spacing). A 4kW system (10 panels): ~20m². A 5kW system (13 panels): ~26m². A 6kW system (16 panels): ~32m². Most 3-bed UK homes have 15-22m² of usable roof on one slope — enough for 8-11 panels (3.2-4.4kW). Your installer measures exact usable area during the free site survey, accounting for chimneys, skylights, vents, and edge setbacks.
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