Find out how many panels you need, whether a battery is worth it, and how much you could save on energy bills instantly!
Solar is one of the smartest long-term investments UK homeowners can make, but knowing where to start with the process can feel overwhelming. Our UK solar calculator takes the uncertainty out of going solar. Whether you’re just starting to explore solar panels or you’re comparing quotes and want extra clarity, this tool helps you understand your options with confidence.
Our free UK solar calculator gives you a personalised estimate of system size, costs, and savings so you can see exactly what solar means for your home.
Feeling overwhelmed about using this tool? Don’t worry, here’s a simple breakdown of how you can use our solar cost calculator to get clear answers fast:
We use regional weather and sunlight data.
Tailors the system size to your household.
South-facing? Flat or pitched? We factor it in.
See how much storage could boost your savings
Panel numbers, estimated costs, savings, and ROI.
If you’re still wondering why you should use our solar installation cost calculator, look no further than these simple facts we’ve gathered:
No inflated promises
Tailors the system size to your household.
Check if storage is worth adding now or later
Compare quotes and budget accurately
It uses your postcode to factor in UK weather and sunlight patterns, giving results based on real conditions rather than generic averages
The tool asks for your roof type (flat or pitched) and direction (south, east, or west) to give accurate results.
The calculator uses UK-specific weather data, energy prices, and roof details to provide realistic estimates of costs and savings.
It provides cost guidance using average UK installation prices, adjusted for your roof type, orientation, and household energy use.
The tool sizes your system based on postcode, energy usage, and roof details, and if you choose a battery, it updates in real time to suggest capacity.
Battery recommendations are tailored to your daily usage, the size of your solar system, and local sunlight conditions.