Estimate annual generation, savings and payback for a rooftop solar installation in the UK.
kWp
£
°
p/kWh
p/kWh
kWh/yr
Add Battery Storage
kWh
£
PAYBACK PERIOD
- yrs
Annual saving: £0
Annual generation
0 kWh
25-yr net benefit
£0
CO₂ saved / yr
0 kg
Year-one generation split
Self-consumed (avoids imports)
0 kWh
Exported (SEG income)
0 kWh
Self-consumedExported
Illustrative only. Assumes 0.5% annual panel degradation and 4% annual electricity price inflation over 25 years.
Actual yield varies with weather, installer quality and equipment. For guidance only — obtain MCS-certified quotes before purchase.