How Much Could You Save with Solar?

The calculator provides reliable estimates based on 900 kWh/kWp generation, South Yorkshire solar irradiance data, a 24.5p/kWh tariff rate, and Smart Export Guarantee rates of 6p/kWh. Actual savings vary based on your specific roof orientation, shading, energy usage patterns, and the energy tariff you are on. A free site survey from our MCS-certified team will give you a precise personalised figure.

Most 2-3 bedroom homes in South Yorkshire suit a 3.5-4.5kW system (8-10 panels). A 4-bedroom home typically benefits from a 5-6kW system. The right size depends on your roof space, energy consumption, and whether you plan to add battery storage or an EV charger. Our free survey will identify the optimal system for your home.

Yes. Without a battery, around 45-55% of your solar electricity is used directly. Adding battery storage increases this to 75-85%, meaning you import far less from the grid at full rate. For households with higher evening usage or EV owners, the payback on battery storage has improved dramatically as prices have fallen in 2025-2026.

For a typical South Yorkshire home, a solar-only system currently has a payback period of 8-12 years. Adding battery storage extends this slightly to 10-13 years, but the higher annual savings and 25-year lifetime of panels mean the total return is significantly better. After payback, the system generates essentially free electricity for the remaining lifetime.

Yes. The 0% VAT rate on residential solar panel installations, battery storage, and heat pumps has been extended and remains in effect throughout 2026. This saves you approximately 20% compared to the standard 20% VAT rate, and the calculator reflects this in the VAT saving figure shown.