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

Solar Energy

Solar Panel Cost Savings Calculator

Project your total 25-year net savings from going solar, accounting for electricity rate inflation and panel degradation. Use this before getting installer quotes to set realistic financial expectations.

Fill in the required fields to see your result.
Solar Energy

Solar Panel Degradation Calculator

Project how much energy your solar panels will produce in any future year as their output gradually declines with age. Use it to model long-term performance, verify warranty compliance, and forecast lifetime energy generation.

Fill in the required fields to see your result.

Key differences

Solar Panel Cost Savings CalculatorSolar Panel Degradation Calculator
CategorySolar EnergySolar Energy
Inputs required53
Result25-Year Net Savings ($)Production After Degradation (kWh/year)
What it doesProject your total 25-year net savings from going solar, accounting for electricity rate inflation and panel degradation. Use this before getting installer quotes to set realistic financial expectations.Project how much energy your solar panels will produce in any future year as their output gradually declines with age. Use it to model long-term performance, verify warranty compliance, and forecast lifetime energy generation.