Payback Period: Every UK City

What is the solar payback period in my city?

Solar panel payback period for every major UK city (4kW system, 2026 data): FASTEST PAYBACK: Portsmouth 8.2yr, Southampton 8.4yr, Brighton 8.5yr, Plymouth 8.6yr, Exeter 8.7yr, Bristol 8.9yr, London 9.0yr, Cardiff 9.2yr, Cambridge 9.1yr, Oxford 9.0yr. MEDIUM: Birmingham 9.8yr, Nottingham 10.0yr, Manchester 10.3yr, Leeds 10.2yr, Liverpool 10.4yr, Sheffield 10.1yr, Leicester 9.9yr, Norwich 9.5yr, Newcastle 10.8yr, York 10.1yr. SLOWEST: Edinburgh 11.4yr, Glasgow 11.8yr, Aberdeen 12.3yr, Inverness 12.8yr, Belfast 11.2yr. METHODOLOGY: PVGIS annual yield (kWh/kWp) for each city's coordinates, multiplied by 4kW system size. Applied 40% self-consumption at 24.5p/kWh (Ofgem cap) plus 60% export at 5.5p/kWh average SEG rate. System cost: regional average from MCS installer data (£6,200-£7,800). Sources: PVGIS (re.jrc.ec.europa.eu), Ofgem (ofgem.gov.uk), MCS (mcscertified.com).