If you financed your solar panels with a loan and still owe a balance, you can refinance that debt the same way you’d refinance a car loan or a mortgage. The option to refinance a solar loan is open to homeowners who own their panels through financing; it isn’t available if you have a lease or a power purchase agreement, because in those arrangements you don’t own the system. For borrowers who qualify, swapping a solar-specific loan (often priced at 7% to 9%) for a home equity product or personal loan can cut the rate by several percentage points and eliminate some of the fee structures baked into solar financing.
Why It’s Often Worth Doing
Solar-specific loans carry costs that aren’t always obvious at signing. The Consumer Financial Protection Bureau found that solar lenders routinely embed “dealer fees” into the loan principal — charges that inflate the amount financed by 10% to 30% above the system’s cash price, and sometimes by more than 50%. These fees typically aren’t broken out separately, so borrowers often don’t realize they’re paying thousands above the actual cost of their panels.1Consumer Financial Protection Bureau. Issue Spotlight: Solar Financing
A second trap is the re-amortization feature built into many solar contracts. The loan starts with a low introductory payment, but if you don’t make a large lump-sum prepayment — typically 30% of the principal — by around month 19, your monthly payment jumps for the remaining term. That expected prepayment is calibrated to the federal solar tax credit, but not every borrower receives the full credit or has the cash available when the deadline hits.1Consumer Financial Protection Bureau. Issue Spotlight: Solar Financing Refinancing into a fixed-payment loan removes that risk.
Beyond escaping unfavorable structures, borrowers refinance to capture lower rates, shorten the payoff period, or roll the solar balance into a home-secured loan with better terms.
Who Qualifies
Lenders look at your credit, your existing debts, and the status of the solar system itself.
Most require a minimum credit score somewhere in the 640 to 700 range, with better scores unlocking better rates. Fannie Mae–backed mortgage products accept scores as low as 620. Your debt-to-income ratio also matters: on manually underwritten conventional loans, Fannie Mae caps DTI at 36%, or up to 45% with stronger credit and reserves; automated underwriting can go as high as 50%.2Fannie Mae. Debt-to-Income Ratios
The system itself has to be fully installed, connected to the grid, and producing power before a lender will approve the refinance. If you’re using a home-secured product such as a HELOC or cash-out refinance, you’ll also need enough equity in the property — your mortgage balance subtracted from the appraised value.
Loan Products That Can Replace a Solar Loan
Several types of financing can pay off your existing solar balance. Each one carries different trade-offs for cost and collateral.
Unsecured Personal Loan
A personal loan pays off the solar balance without placing a lien on your home. Approval leans on credit score and income. Terms are usually short (3 to 7 years) and rates can be higher than home-secured options, but your house isn’t on the line.
Home Equity Loan or HELOC
These products use your home’s equity as collateral and generally price well below unsecured financing. A home equity loan delivers a fixed lump sum at a fixed rate; a HELOC gives you a revolving credit line you draw from as needed. Either can clear the solar balance. The trade-off is real: miss payments and your home is at risk.
Cash-Out Mortgage Refinance
A cash-out refinance replaces your existing mortgage with a larger one, and the extra cash pays off the solar loan. That folds the solar debt into your mortgage rate, which is usually lower than solar-specific pricing. You restart the mortgage clock and pay closing costs on the full new mortgage amount, not just the solar portion.
Energy-Efficient Mortgage Programs
Fannie Mae’s HomeStyle Energy mortgage allows limited cash-out refinances that include paying off higher-interest energy-related debt, including existing solar loans, up to 15% of the property’s appraised value. Freddie Mac’s GreenCHOICE Mortgage program caps energy financing at the same 15% of completed value and permits terms up to 30 years.3Freddie Mac Single-Family. GreenCHOICE Mortgages Both are designed specifically for energy improvements and may underwrite more favorably than a standard cash-out refi.
The UCC-1 Filing on Your Panels
This is the step that trips up most solar refinances. When your original lender financed the panels, they almost certainly recorded a UCC-1 fixture filing in the same county office that handles mortgages.4Cornell Law Institute. Uniform Commercial Code 9-501 – Filing Office The filing shows that the panels are attached to the home but secure the solar debt specifically, and a properly filed fixture filing recorded before installation can take priority over later interests in the property.5Cornell Law Institute. Uniform Commercial Code 9-334
If you’re refinancing into any home-secured loan, your new lender will almost certainly require the solar company to either release the UCC-1 or subordinate it so the new mortgage holds first-lien position. Freddie Mac requires sellers to release or subordinate any UCC-1 that the jurisdiction treats as a general lien against the real estate.6Freddie Mac. Solar Panel FAQ Timing varies: some solar companies process the request in a few business days, others take weeks, and some charge a processing fee (around $150 in some cases).
If you refinance with an unsecured personal loan, lien priority doesn’t come up because no new lien attaches. You’ll still want the original lender to file a UCC-3 termination after payoff to clear the fixture filing from your records. Allow 15 to 20 business days for the recorded release to come back from the county after the original lender files it.
Your Federal Solar Tax Credit Is Safe
If you claimed the Residential Clean Energy Credit (30% of installation costs for systems placed in service from 2022 through 2025), refinancing doesn’t put it at risk.7IRS. Residential Clean Energy Credit The Section 25D credit is based on what you paid for the system and when it was installed; changing how the remaining debt is financed doesn’t create a new taxable event or disturb a credit you already took.8Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit
Different rules apply to the separate commercial investment tax credit under Section 48. If you financed your home system through a business entity or claimed the commercial credit, talk to a tax professional before refinancing.
One timing note. If your tax refund hasn’t yet been applied to your original solar loan as the expected lump-sum prepayment, refinancing before the re-amortization deadline frees you from that obligation and lets you use the refund however you want.
Documents to Gather Before You Apply
Having your paperwork ready up front shortens the process.
- Original solar installation contract, showing system specs and total cost
- Payoff statement from your current solar lender, with the exact balance, daily interest accrual, and an expiration date
- Income verification: two years of W-2s or tax returns and at least 30 days of recent pay stubs
- UCC-1 filing information from your original loan disclosures or a public records search at the county recorder
- A recent utility bill confirming the system is operational and connected to the grid
- Current mortgage statement, if you’re refinancing into a home-secured product
How the Refinance Closes
Shop at least three offers across different loan types — personal loan, HELOC, and mortgage refinance — and compare rate, term, and closing costs together, not in isolation.
After you choose a lender and apply, underwriters verify income, pull your credit (a hard inquiry), and order a property appraisal if the loan is home-secured. The title search will flag any existing UCC-1 on your panels. For mortgage refinances, you or the new lender will coordinate with your solar company for a subordination agreement or temporary release before closing.
On approval, the new lender wires or mails the payoff directly to your original solar financing company. You’ll receive a closing disclosure spelling out the new rate, payment, and payoff timeline. Once the original lender has the funds, they file a UCC-3 termination to remove the fixture filing from your property records.
When the Math Works
Refinancing has costs of its own — closing costs on a mortgage refi, origination fees on a personal loan — and those eat into the savings. The simplest test is the break-even: divide total refinancing costs by the monthly savings the new loan provides. If you’ll stay in the home longer than that break-even window, refinancing usually pays off.
The case is strongest when:
- Your current loan principal is noticeably higher than your system’s cash price, meaning you’re carrying embedded dealer fees you can shed
- Your re-amortization deadline is close and you don’t have the lump sum to head off the payment jump
- Rates have fallen since you financed; even a 2-point drop on a $25,000 balance saves roughly $250 a year in interest
- You have significant home equity and can move from an unsecured solar loan near 8% into a home equity loan near 5%, accepting that your home now secures the debt
The case weakens when the remaining balance is small, you plan to sell soon, or closing costs on a new mortgage swamp the rate savings. Run the break-even before you sign.