Adjust the sliders to match your home and see your estimated savings, payback period, and 25-year return — instantly, no email required.
Estimates only, based on average UK solar irradiance, current electricity prices (~28p/kWh) and typical Smart Export Guarantee rates. Your real quote depends on your specific roof survey, panel choice, and local conditions.
Our calculator uses standard UK solar yield assumptions (approximately 850-950 kWh per kWp installed per year for a well-oriented system), current average electricity prices, and typical Smart Export Guarantee rates to estimate your savings.
It assumes roughly 50% self-consumption without a battery, rising to 70-85% with battery storage — meaning more of your generated electricity is used directly rather than exported.
This calculator gives a strong estimate, but only an in-person survey can confirm your roof's exact shading, orientation, and structural suitability.
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