Solar ROI Calculator

Estimate the financial benefits of integrating solar panels into your new build project

Understand Your Solar Investment

Calculate the return on investment for solar panels in your new build property

Investing in solar energy for your new build is a significant decision that can deliver substantial financial returns over the lifetime of your property. Our calculator helps you understand the potential savings and benefits specific to your project.

Unlike retrofit installations, integrating solar into a new build offers unique cost advantages that can significantly improve your return on investment. Use this tool to generate a personalized estimate based on your property specifications.

This calculator provides estimates for energy generation, cost savings, payback period, and long-term returns. It takes into account factors specific to new build integration, including reduced installation costs compared to retrofitting.

For a detailed financial analysis tailored to your specific project and location, contact our team for a comprehensive consultation and personalized quote.

Your Property Details

Typical 3-bedroom house has ~30-40m² suitable roof area
0° 15° 30° 45° 60°
Optimal pitch is typically 30-40 degrees in the UK
Estimate the typical level of shading on your roof area
Average UK household uses ~3,600 kWh per year
Average UK rate is around 28p per kWh

System Preferences

Battery storage increases self-consumption and savings

Your Estimated Results

Fill in your property details and system preferences, then click "Calculate My Savings" to see your personalized solar ROI estimates.

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System size icon Recommended System Size

5.5 kWp

Based on your available roof area and electricity usage

Energy icon Annual Energy Generation

4,950 kWh

Estimated yearly electricity production

Savings icon Annual Savings

£0 per year

From reduced electricity bills and Smart Export Guarantee payments

Payback icon Payback Period

6.4 years

Time until your system pays for itself

ROI icon 25-Year Return on Investment

386%

Total return over system lifetime

CO2 icon Annual CO₂ Savings

1.2 tonnes

Equivalent to planting approximately 60 trees

Want a more detailed analysis? Contact our team for a personalized consultation.

This calculator provides estimates based on typical solar performance in the UK. Actual results may vary based on specific location, shading, weather patterns, and system configuration. Financial estimates are based on current electricity prices and do not account for future price changes.

Financial Benefits of Solar for New Builds

Why integrating solar during construction makes financial sense

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Lower Installation Costs

Integrating solar during construction is typically 20-30% less expensive than retrofitting, improving your return on investment from day one.

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Mortgage Integration

Including solar costs in your mortgage means lower interest rates and longer payment terms compared to separate solar financing.

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Increased Property Value

Homes with solar typically command 3-4% higher market values, with new builds featuring integrated systems often achieving premium valuations.

Tax benefits icon

Tax Benefits

Take advantage of available tax incentives and reduced VAT rates when installing solar as part of new construction.

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No Energy Bills from Day One

Move into your new property with dramatically reduced energy costs from the very first day of occupancy.

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Future-Proof Investment

Protection against rising energy costs, with solar panel systems designed to last 25+ years with minimal maintenance.

Calculator Assumptions

The factors and variables used in our calculations

  • Solar Irradiance: Based on average UK solar irradiance data with regional variation factored in.
  • System Efficiency: Standard panels estimated at 19-20% efficiency, premium at 21-22%, and high-end at 23%+.
  • Performance Ratio: 0.8 (accounting for system losses from cables, inverter, etc.).
  • Annual Degradation: 0.5% per year (industry standard for quality panels).
  • Electricity Price Inflation: 3.5% annual increase (based on historical trends).
  • Smart Export Guarantee (SEG): 5.5p per kWh for exported electricity.
  • Self-Consumption: 50% without battery storage, 80% with battery storage.
  • Maintenance Costs: £100 per year for regular maintenance and cleaning.
  • Inverter Replacement: Factored in after 12-15 years at 15% of initial system cost.
  • Installation Costs: Based on new build integration rather than retrofit costs, resulting in 20-30% savings.

Ready to Make Solar a Part of Your New Build?

Contact us today for a detailed consultation and personalized quote.

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