Free Home Electrification Calculators
27 interactive calculators to help Australian households make smarter decisions about solar, batteries, EVs, and heat pumps. No sign-up, no ads.
Electric Vehicles
6 toolsEV vs Petrol Savings Calculator
Annual running cost comparison, break-even point, and 10-year net saving vs petrol.
EV Charging Cost Calculator
What it actually costs to charge your EV at home - by state, tariff, and usage.
EV Range Calculator
Enter your weekly driving habits and see which EVs suit your real-world needs.
FBT Savings Calculator
Estimate your annual tax saving from the FBT exemption on a novated lease EV.
Novated Lease vs Buy Calculator
NewCompare total out-of-pocket cost of novated lease vs cash purchase vs car loan - accounts for FBT exemption and pre-tax running costs.
EV Stamp Duty Calculator
NewCalculate stamp duty on an EV purchase in your state - and see your saving vs petrol.
EV Chargers
3 toolsCharger Speed Calculator
How long will it actually take to charge your EV? Battery size, charger power, OBC limit.
Off-Peak Charging Savings
NewHow much can you save by switching to a time-of-use tariff for overnight EV charging?
Free Solar km Calculator
NewHow many km per year can you drive for free using surplus solar generation?
Solar
5 toolsSolar Savings Calculator
Estimate annual savings, self-consumption rate, and payback by postcode and system size.
STC Rebate Calculator
Calculate your Small-scale Technology Certificates and the government rebate value.
Solar System Sizing Calculator
NewWhat size solar system do you need? Accounts for EV charging and battery storage.
Solar Export Loss Calculator
NewHow much are you losing by exporting solar at low feed-in rates? See what a battery could recover.
Solar + Battery Combined ROI
NewModel the combined payback of solar and battery together - see whether the battery improves or hurts the return versus solar alone.
Home Batteries
4 toolsBattery Payback Calculator
Payback period, 10-year net saving, and ROI for a home battery - including state rebates.
Battery Energy Savings Calculator
Estimate how many kWh of grid electricity your battery will save each year.
Battery Sizing Calculator
NewWhat capacity battery do you need? Based on evening usage, backup goals, and solar size.
VPP Earnings Calculator
NewEstimate annual Virtual Power Plant income by battery size, state, and program.
Quick Converters
4 toolskWh to km Converter
NewHow far will your EV go on a given amount of energy? Instant range from kWh and efficiency.
Petrol Equivalent Price
NewWhat would your electricity rate cost if it were petrol? See the equivalent price per litre.
EV COโ Savings Calculator
NewHow much carbon does driving electric actually save? kg COโ avoided vs petrol by state grid.
Solar Panel Roof Estimator
NewHow many solar panels fit on your roof? Enter mยฒ and get panel count, kW, and annual output.
Home Energy
5 toolsAppliance Running Cost Calculator
NewWhat does each appliance cost to run in Australia? Fridge, AC, EV charger, pool pump and 25 more.
Cheapest Time to Use Electricity
NewOff-peak hours by state, TOU rates, and which appliances to shift for maximum savings.
Heat Pump Hot Water Sizing
Find the right heat pump size for your household and see how much you could save.
Heat Pump Payback Calculator
NewIs upgrading to heat pump hot water worth it? Annual saving vs gas and electric resistive.
State Rebate Checker
Find current EV, battery, solar, and charger rebates available in your state.
Ready to compare products?
Use the calculators to run the numbers, then compare real products with Australian prices.