Run the numbers before anyone runs them at you.
Five independent tools for UK homes. Each one works right on its page — or pop it out into a little window and keep it beside your quotes.
Assumptions checked 1 July 2026
No email, ever
Estimates, not quotes
Solar cost estimator
From your monthly bill to system size, installed cost range and a payback timeline chart.
Battery size finder
Size a battery from your actual usage — with or without solar — and see cost and payback.
Heat pump vs gas boiler
Annual running costs side by side, at the unit rates you actually pay. Grant-aware.
Export tariff comparison
What your spare solar earns with each supplier — sortable, with your own export figure.
Grant eligibility checker
Four taps to see which 2026 schemes — BUS, ECO4, 0% VAT and more — fit your home.
When you’re ready
Get quotes from vetted local installers
Up to three MCS-certified installers, matched to your postcode. No spam, no reselling your number, no obligation.
MCS-certified installers
Max 3 quotes, then we stop
Free — installers pay us, not you