Free Energy Calculators & Tools
Compare costs, calculate savings, and understand grants for air source heat pumps, solar panels, batteries, and EV chargers across the UK. All free, no sign-up required.
Air Source Heat Pump Cost Calculator
Compare installed air source heat pump costs for your town, what you pay after the £7,500 Boiler Upgrade Scheme grant, with brand comparisons and payback estimates across the UK.
Gas Boiler vs Heat Pump Calculator
Should you replace your boiler like-for-like or switch? Run the numbers with the Ofgem cap rates, including the 27% gas rate rise on 1 July 2026.
Solar System Cost Calculator
Get indicative pricing for 4kW solar systems, SEG export rate ranges by supplier, and payback estimates for your area.
Battery Storage Payback Calculator
Calculate whether a home battery makes financial sense. Compare GivEnergy, Tesla Powerwall, and more with real electricity rates and SEG export data.
Town Energy Cost Lookup
Search any UK town to see local air source heat pump, solar, and battery costs. Includes climate zone data and regional pricing.
Grants & Incentives Guide
What actually helps in the UK: the £7,500 Boiler Upgrade Scheme (England and Wales), Home Energy Scotland grant and loan, the £9,000 oil and LPG uplift from 21 July 2026, and 0% VAT until March 2027.
Embeddable Widget for Your Site
Add a free air source heat pump or solar cost calculator widget to your website. Perfect for energy bloggers, installers, and property sites.
Looking for town-specific data?
Every tool uses indicative pricing data for towns across the UK. Search your town to get costs tailored to your location.
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