UK Solar Savings Calculator
Estimate your solar panel savings, payback period, and return on investment.
Your Electricity Usage
Your Solar System
Battery Storage (optional)
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Annual saving
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Payback period
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25-year net saving
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Annual ROI
Assumptions:
- South-facing roof, 35° pitch
- Annual generation estimate based on UK averages
- 50% self-consumption (35% without battery)
- Panel degradation: 0.5% per year
- DIY cost ~£1,000/kW; Installer cost ~£1,700/kW
- 25-year panel lifespan; 12-year inverter replacement (included in costs)