Calculators
Energy calculators
Eight tools across solar, EVs and whole-home energy. Each one runs in your browser, shows its assumptions, and links to a full methodology you can check.
Weighing more than one upgrade?
The electrify-my-home planner combines solar, EV, heat pump and battery on one shared profile.
Solar
EV
EV vs gas cost
Compare total cost of ownership, find the break-even mileage and see the CO₂ you’d save.
Open calculator →EV charging cost
Calculate cost per full charge, cost per mile and your monthly and annual charging bill.
Open calculator →EV charging time
See how long it takes to charge between two states of charge at a given charger power.
Open calculator →Home energy
Heat pump savings
Estimate annual savings versus your current heating fuel, payback and CO₂ reduction.
Open calculator →Home battery payback
Estimate annual savings, payback period and lifetime value of a home battery.
Open calculator →Electricity bill
Find the daily, monthly and annual running cost in kWh and money for any appliance.
Open calculator →