☀️ Solar Savings Calculator

Calculate your solar panel savings with your actual electricity rate

Your Details
💡 Tip: Enter your postcode to auto-detect your region, or manually input your electricity rate from your latest bill.
Used to determine your solar region and typical sunlight hours
Auto-filled based on your postcode region from Ofgem data AUTO
Find this on your latest electricity bill under ‘unit rate’ MANUAL
Where to find your rate:
• Look for “Unit rate” or “Price per kWh” on your bill
• Typical range: 23p – 26p/kWh (April 2026)
• Include VAT if shown separately
Ofgem typical medium household: ~£73/month
England average: 3.5 hrs (South: 4.2, North: 2.8)
Typical 3-bed semi: ~1,000-1,400 sq ft

Calculating your solar potential…

Calculation Assumptions
  • Panel efficiency: 20% (modern monocrystalline)
  • System degradation: 0.5% per year
  • SEG export rate: 15p/kWh (typical 2026 rate)
  • Self-consumption rate: 50% of generation
  • Installation cost: £1,200-£1,800 per kWp
  • Annual electricity price inflation: 3%
Results

Enter your details and click calculate

We’ll show you personalised solar savings based on your actual electricity rate.

Disclaimer: This calculator provides estimates based on typical solar conditions and your entered electricity rate. Actual savings depend on your specific installation, shading, panel quality, and future energy prices. System costs vary by installer. Always get multiple quotes from MCS-certified installers. SEG rates vary by supplier (typically 5-20p/kWh).
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Regional Electricity Rates

Ofgem Price Cap: April – June 2026. Rates include VAT at 5%.

Region Unit Rate (p/kWh) Standing Charge (p/day)

Click on a region to use its rate, or close and enter your own rate manually.

Switching to solar is a smart move—but the biggest question is always the same: how much will you actually save? That’s exactly where this solar savings calculator becomes powerful. Instead of guessing, you get clear, data-driven insights in seconds.

This tool is designed to give you a quick and realistic estimate of your solar potential based on your energy usage, location, and electricity costs. By simply entering your monthly bill or consumption, you can instantly see how solar panels could reduce your electricity expenses, what system size you may need, and how long it will take to recover your investment.

How the Solar Savings Calculator Works

The calculator uses key inputs like your average electricity bill, energy consumption, and local sunlight conditions to generate accurate projections. It then compares your current electricity costs with what you would pay after installing solar.

Within seconds, you’ll get:

  • Estimated solar system size
  • Required roof area
  • Total installation cost estimate
  • Payback period (ROI timeline)
  • Long-term savings over 10–25 years

    • These estimates are based on proven solar modeling methods that factor in real-world variables such as tariffs, energy production, and system performance.

    Why Use a Solar Savings Calculator?

    Making a decision about solar without numbers is risky. This tool removes uncertainty and gives you clarity before you invest.

    1. Instant Financial Insights

    See exactly how much you can save each month and year. Many users discover they can reduce electricity bills by up to 70–90% with the right system.

    2. Understand Your ROI

    Solar is an investment. The calculator shows how quickly your system pays for itself, often within just a few years depending on your usage and setup.

    3. System Size Recommendation

    Not sure what size system you need? The calculator estimates the ideal capacity based on your energy needs, helping you avoid overpaying or under-sizing.

    4. Long-Term Planning

    It doesn’t just stop at monthly savings. You’ll see your total savings over decades, helping you plan for a more energy-independent future.

    Benefits of Going Solar

    Using this calculator is the first step toward a bigger shift, whihc is moving towards clean, renewable energy.

  • Reduce or even eliminate your monthly utility costs
  • Protection Against Rising tariffs and avoid future price hikes
  • Solar systems can deliver strong long-term financial returns
  • Cut carbon emissions and contribute to a cleaner environment

    • Get Started with Confidence

    This solar savings calculator gives you a clear starting point. No sales pressure. No complicated math. Just real numbers tailored to your situation.

    Use it to explore different scenarios, adjust inputs, and see what works best for your home or business. Once you understand your savings potential, you can move forward with confidence and know exactly what to expect from your solar investment.