Whole-home · hourly simulation

Should you go all-electric?

Hot water, cooktop and space heating all run on gas today. This simulates swapping each to a heat pump, induction and reverse-cycle — hour by hour, sharing your solar and battery — and shows what actually changes. The big one is usually heating, and the gas supply charge only disappears when the last appliance switches.

What this calculator estimates

Green ROI Calculator estimates annual energy costs, solar self-consumption, battery utilisation, gas supply charge savings and electrification benefits for Australian households. The model compares gas and all-electric scenarios using hourly energy simulation and projected Australian EPW weather data.