Calculator
Electricity & Energy Usage Calculator
Estimate your home's kWh, cost, and appliance load in minutes
Australian household electricity use is shaped by summer air conditioning, electric hot water, pool pumps, larger homes, and retailer tariffs. This calculator turns appliance wattage, daily runtime, and cents-per-kWh into household kWh and running cost so you can size solar, batteries, and EV charging around measured load instead of a generic average.
Enter Your Details
Fill in the form and click Calculate to see results.
Next best actions
Understanding your usage pattern is the first step toward lower bills.
How to Use This Calculator
Enter the major appliances or loads you want to model, then add wattage and average daily runtime. Use your retailer bill for the electricity rate in cents per kWh. Model air conditioning, electric hot water, pool pumps, refrigeration, clothes drying, and EV charging first because those loads usually move the bill most. The result shows daily, monthly, and yearly kWh, cost sensitivity, and next-step actions for Australian solar ROI, battery storage, and EV charging.
Formula & Methodology
Appliance energy consumption is calculated as: Daily kWh = Power Rating (Watts) x Hours of Use per Day / 1000. Monthly usage multiplies by 30. Australian households should model seasonal loads separately because summer air conditioning, electric heating in cooler states, and pool pumps can dominate monthly kWh. Use AEMO and retailer tariffs for cents-per-kWh, and use Energy Rating Label annual kWh figures where appliance runtime is uncertain.