Solar Savings Calculator
Estimate your potential savings with realistic UK solar data
Solar Savings Calculator
Our solar savings calculator provides realistic estimates based on your location, roof characteristics, and energy consumption. Unlike many online calculators that overpromise, ours uses conservative UK solar irradiance data and includes real-world efficiency losses.
UK average: 2,700-4,100 kWh/year
UK average: £0.24/kWh (Energy Price Cap 2025)
Typical residential: 3-5 kW | Commercial: 10-50 kW
Your Estimated Results
Note: These are estimates only
Estimates are indicative only and based on industry-standard assumptions. Actual performance depends on roof orientation, shading, weather patterns, system quality, and energy consumption habits. For an accurate assessment tailored to your property, book a free survey.
UK solar panels generate electricity even on cloudy days. A typical 4kW system produces 3,400-4,000 kWh annually in most of England, Scotland, and Wales. South-facing roofs with minimal shading perform best, but east/west-facing roofs are also viable.
Payback period is the time it takes for your energy savings plus export payments to equal the system cost. Typical UK payback is 8-12 years for homes, 7-10 years for businesses. After payback, you enjoy 15+ years of near-free electricity with minimal maintenance costs.
The Smart Export Guarantee (SEG) pays you for surplus electricity exported to the grid. Rates vary from 1p to 15p+ per kWh depending on the supplier. Battery storage reduces exports but increases self-consumption and savings.
Calculations based on UK solar irradiance (1,050 kWh/kWp/year), 85% system efficiency, and current energy prices.
Important Note
How Solar Works in the UK
UK solar panels generate electricity even on cloudy days. A typical 4kW system produces 3,400-4,000 kWh annually in most of England, Scotland, and Wales. South-facing roofs with minimal shading perform best, but east/west-facing roofs are also viable.
Understanding Payback Period
Payback period is the time it takes for your energy savings plus export payments to equal the system cost. Typical UK payback is 8-12 years for homes, 7-10 years for businesses. After payback, you enjoy 15+ years of near-free electricity with minimal maintenance costs.
SEG Export Payments
The Smart Export Guarantee (SEG) pays you for surplus electricity exported to the grid. Rates vary from 1p to 15p+ per kWh depending on the supplier. Battery storage reduces exports but increases self-consumption and savings.
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