What will it cost, or save, in your home?
Free, independent calculators for UK homes, covering solar panels, batteries, heat pumps, EV charging and smart tariffs. They use current Ofgem price cap figures (data updated 2026-10-20). We don't sell any equipment.
Solar
Solar payback calculator
Yearly saving and payback by region.
Solar + battery calculator
Is a battery worth adding?
SEG export earnings
Compare export tariffs.
Is solar worth it? (guide)
Real regional numbers.
Heat pumps
Heat pump vs gas running cost
Yearly cost compared.
Boiler Upgrade Scheme checker
£7,500 grant eligibility and net cost.
Heat pump size estimator
Ballpark kW for your home.
EV & tariffs
EV home charging cost
Per year, per mile, vs petrol.
Smart tariff comparison
Go, Cosy, Economy 7 vs price cap.
Appliance running cost
What any appliance costs to run.
Current price cap (1 Oct–31 Dec 2026)
Electricity averages 26.32p per kWh with a 54.83p daily standing charge. Gas averages 7.97p per kWh with a 29.68p daily standing charge (Direct Debit, England, Scotland and Wales average). Source: Ofgem.
Estimates only, not financial advice. Always get quotes from certified installers.