Calculators
Instant answers: type your numbers, see the cost.
Solar Panel Payback Calculator
Estimate how many years a home solar system takes to pay for itself from its size, cost, yearly yield, self-consumption and your electricity and export prices.
Washer and Dryer Running Cost Calculator
Estimate what your washing machine and tumble dryer cost per cycle, per week and per year from their energy per cycle and your electricity price.
LED vs Halogen Savings Calculator
See how much you save each year by switching bulbs to LED, and how fast the change pays for itself, based on wattages, hours and your electricity price.
Heat Pump vs Gas Boiler Cost Calculator
Compare a year of heating with a heat pump versus a gas boiler using your heat demand, the heat pump COP, boiler efficiency and fuel prices.
Air Conditioning Running Cost Calculator
See what your air conditioner costs to run per hour, per day and per cooling season from its power draw, daily hours and your electricity price.
EV Home Charging Cost Calculator
Estimate what charging your electric car at home costs — per full charge, per 100 km and per year — from your battery, efficiency and price per kWh.
Standby Power Calculator: The Yearly Cost of Vampire Devices
Add up what your always-on gadgets cost while 'off'. Estimate the yearly and monthly cost of standby (vampire) power across your home.
Electricity Cost Calculator: What Any Appliance Costs to Run
Work out what any appliance costs to run per day, month and year from its wattage, hours of use and your price per kWh.
Not sure where to start?
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