Design your solar estimate
£
Adjust the assumptions — roof, rates & system size (optional)
These are pre-filled with typical UK figures. Leave them for a standard estimate, or tweak them to match your own bill and quote.
p/kWh
p/kWh
4.0 kWp
4%
Add your postcode or pick a region above to calculate.
Compare your options
The same system, three ways to run it — from panels alone to battery plus a smart tariff.
Your solar in detail
Based on the system above — how it performs through the year and builds up over its lifetime.
Estimated monthly generation
Your savings build up over 25 years
Panels only
Solar + battery
+ Smart tariff
Year-by-year savings
Indicative estimate only — not a quotation. Actual savings vary by property, usage, equipment and tariff. Always get a professional quote before investing.