Texas Solar Loan Cost Calculator

Your solar quote came with a monthly payment. It didn’t come with a total. Between the interest rate, a term that can run 20 to 25 years, and fees that sometimes get folded into the loan itself, most Texas homeowners end up paying tens of thousands more than the number they remember signing.

Enter your loan amount, interest rate, and term below. You’ll get your real monthly payment, total interest paid, and total cost — in seconds, free, no phone call required.

Solar Financing Calculator

Estimate your true lifetime loan costs instantly

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Loan Cost Breakdown

Live Estimate
Projected Long-Term Exposure
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Estimated total scheduled payments over the life of the loan.

$30,000 financed → $47,477 projected over 20 years

Estimated Interest Over Loan Term
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Cost of borrowing
Estimated Monthly Payment
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Principal & interest
Principal (0%) Interest (0%)
No obligation estimate

Why Solar Loans Often Cost More Than Homeowners Expect

  • Why Solar Loans Cost More

    A few common factors tend to drive up the real cost of a solar loan well beyond the number a homeowner remembers being told at the sales appointment:

• Long terms. A 20- or 25-year term keeps the monthly payment low, but it also means decades of interest accruing on the balance.

• Dealer fees rolled into the loan. Some financing agreements add a dealer or origination fee directly into the financed amount, so the homeowner ends up paying interest on the fee itself.

• Rate structures that aren’t always made clear. Not every homeowner is walked through how their specific rate and term translate into total cost before they sign.

• Add-on products. Extended warranties, monitoring packages, or other add-ons can increase the amount financed without a proportional increase in what the homeowner understood they were buying.

None of this means every solar loan is a bad deal — solar financing works well for a lot of homeowners. But it does mean it’s worth knowing your actual numbers rather than just your monthly payment.

Texas Homeowners Have Consumer Protections Worth Knowing About

Texas law, including the Texas Deceptive and Unfair Trade Practices Act (FDUTPA), gives consumers protections against misleading or deceptive practices in sales and financing agreements. Whether those protections apply to a specific solar agreement depends on the facts of that agreement — which is exactly why it’s worth having your documents reviewed rather than guessing based on how the deal felt at the time.

What to Do If Your Numbers
Don't Look Right

If you run your numbers through this calculator and the total cost is higher than what you were told when you signed, or if something about your agreement doesn’t match what was explained to you at the time, you’re not without options. Start by gathering your loan agreement, any disclosures you were given, and your payment history.

Texas Solar Cancellation helps homeowners get organized and connected with the right resources to have their solar agreement reviewed. Submitting your information doesn’t commit you to anything — it simply starts that process.

Get My Free Contract Review

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Frequently Asked Questions

Is this calculator's result exact?

No. This calculator provides an estimate based on standard loan amortization and the numbers you enter. Your actual payment, rate, and total cost are governed by the terms of your specific agreement with your lender. For an exact figure, refer to your loan documents or contact your lender directly.

No. This tool is for informational and educational purposes only. It does not modify your loan, contact your lender, or take any action on your agreement.

No. Texas Solar Cancellation is not a law firm and does not provide legal or financial advice. Texas Solar Cancellation helps homeowners organize their information and, where appropriate, connect with qualified professionals for further review. No attorney-client relationship is created by using this calculator or submitting your information.

Submit your information using the form on this page. A member of the Texas Solar Cancellation team will follow up to learn more about your situation and explain your options.

Stop Overpaying for Solar