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Both calculators run independently β€” change the inputs on either side to compare results.

Solar Energy

Appliance Energy Cost Calculator

Find the true annual running cost of any appliance from its wattage, hours of use, days per week, your electricity rate, and how many units you run β€” the load solar has to offset.

Solar Energy

Solar Savings Calculator

Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.

Key differences

Appliance Energy Cost CalculatorSolar Savings Calculator
CategorySolar EnergySolar Energy
Inputs required52
ResultAnnual running cost ($/yr)Monthly Savings ($)
What it doesFind the true annual running cost of any appliance from its wattage, hours of use, days per week, your electricity rate, and how many units you run β€” the load solar has to offset.Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.