Solar Loan Payment & Net Savings Calculator
Detailed Solar Loan Analysis
Full loan payment and savings analysis with ITC
Quick Payment Estimate
Formula
Monthly Payment = P × r(1+r)^n / ((1+r)^n − 1); Net Monthly = Payment − Bill Savings; ITC = 30% × System Cost; Adjusted Payment recalculated after ITC applied to principal at month 12
Frequently Asked Questions
Are solar loans worth it?
Solar loans are worth it when your monthly loan payment is close to or less than your current electric bill savings. Many homeowners see positive cash flow from day one. The key is getting a competitive interest rate (5-7%) and properly sizing the system. The 30% ITC significantly reduces the effective cost.
Should I apply the ITC to my solar loan principal?
Applying the 30% ITC to your loan principal after year 1 is usually the best strategy. It reduces your remaining balance, lowering your monthly payment for the rest of the loan term. Some people prefer to pocket the cash, which is also valid if you have higher-interest debt to pay off.
What is a good interest rate for a solar loan?
As of 2024, good solar loan rates range from 4.5-8% APR depending on credit score and loan term. Rates under 6% are considered very good. Be cautious of 0% dealer rates, which often include hidden fees built into a higher system price. Compare the total cost, not just the rate.
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