Solar Savings Calculator UK

Use this UK solar savings calculator to estimate how much rooftop PV could reduce your annual electricity bill. Enter your system size and expected yearly generation, then adjust self-consumption and export assumptions to see how much energy is used at home versus exported to the grid. The model then shows the financial impact on your total household bill.

You can test different Smart Export Guarantee style rates and compare conservative versus optimistic generation scenarios. This helps you understand whether savings are driven more by direct self-use or export payments, and how those results change under different electricity tariffs. If you already have an EV or battery, you can add those too to see the combined effect.

Run multiple scenarios to compare a smaller array, a larger array, or different usage behaviors. The output gives you a practical estimate for annual savings and export income so you can better evaluate installer quotes, financing options, and expected payback under realistic UK tariff conditions.