Solar Loans Explained: Rates, Terms & Loan vs Lease

Solar energy loans in 2026 usually run 5 to 25 years. Fee-free personal loans cost about 6%–36% APR depending on your credit, and HELOCs averaged around 7.3% early in the year. Installer loans often advertise much lower rates, but many hide dealer fees of 10%–30% of the system price.

A loan lets you own solar without paying cash up front. But the loan you pick can add thousands of dollars to the cost. This guide covers rates, terms, hidden fees, and how a loan stacks up against a lease, a PPA, or cash.

What are typical solar loan rates and terms in 2026?

Rates depend mostly on your credit score, the loan type, and whether your home secures the loan. Here is what the main options look like this year.

Not sure how big a loan you need? Start with our solar panel cost guide. The US average installed price is about $2.60 per watt, so a 7 kW system runs near $18,340.

What are dealer fees in solar loans?

A dealer fee is a charge the lender takes to “buy down” the interest rate. The installer usually raises the price to cover it, and you finance the higher amount. The Consumer Financial Protection Bureau (CFPB) found these fees typically run 10% to 30% of the cash price, and sometimes over 50%. Lenders often leave them out of the cost of credit they show you.

Here is how a “3.99%” loan can cost more than it looks:

1. Cash price of the system: $18,340.
2. Add a 25% dealer fee: $18,340 × 0.25 = $4,585.
3. Amount financed: $18,340 + $4,585 = $22,925.
4. Payment at 3.99% for 20 years: about $139 a month.
5. That same $139 a month on the real $18,340 price works out to about 6.7% APR.

So the “3.99%” loan is really closer to a 6.7% loan. The fee also hurts more if you pay off early or sell the house, because it sits in your principal from day one. Always ask for the cash price in writing, then compare it with the amount financed.

Should you use a HELOC or an unsecured solar loan?

Secured loans (HELOCs and home equity loans) use your house as collateral. That usually means lower rates and longer terms. The trade-offs: closing steps take longer, most HELOC rates are variable, and you could lose your home if you can’t pay. Interest on home equity debt used to substantially improve your home may be tax-deductible if you itemize; ask a tax professional.

Unsecured loans (personal loans and most installer loans) don’t put your house on the line. They fund fast, but rates run higher and terms are shorter, which means bigger payments. Note that many installer loans still file a UCC fixture filing on the panels. That can show up when you sell or refinance.

What are your solar panel financing options: loan vs lease vs PPA vs cash?

The 30% federal credit for homeowners ended for systems placed in service after December 31, 2025. Companies that own leased and PPA systems may still claim a business credit for a limited time. Some pass part of that saving on to customers, but nothing requires them to. See our solar rebates and tax credits guide for the details and for state programs that remain.

What would my monthly solar loan payment be?

The standard loan formula is: payment = P × r × (1 + r)^n ÷ ((1 + r)^n − 1). P is the loan amount, r is the monthly rate, and n is the number of months. Here it is step by step for a 7 kW system:

1. Loan amount: $18,340.
2. Monthly rate: 7.99% ÷ 12 = 0.666%.
3. Months: 15 years × 12 = 180.
4. Payment: about $175 a month.
5. Total repaid: $175 × 180 = about $31,500, including about $13,200 in interest.

Now compare with savings. At the US average rate of 18.2¢ per kWh, a 7 kW system saves about $1,720 a year, or $143 a month (7 kW × 1,350 kWh × $0.182 ÷ 12). So a 15-year loan costs a bit more each month than it saves at first. Savings grow as utility rates rise, and the payments stop once the loan ends. Our 25-year solar cost breakdown runs the full numbers, and the solar power calculator helps you size the system first.

What are the red flags in a solar loan offer?

• No cash price. If the seller won’t put a cash price in writing, a dealer fee is likely hidden in the loan.
• A payment that jumps later. The CFPB found many loans raise the payment around month 19 unless you make a large prepayment, often about 30% of the balance. That was built around the federal credit, which homeowners can no longer claim for new systems.
• “Net cost” after a tax credit. Any 2026 quote that subtracts a 30% federal credit from a homeowner’s price is out of date or misleading.
• “Your bill will be zero.” You still pay fixed grid fees, and savings vary by season and utility.
• Rushed signing. Be wary of signing on a tablet at the kitchen table without a copy to review, or a contract in a language you don’t read well.
• “Free solar” or a “government program.” These phrases usually mean a lease or PPA, not free panels.

Frequently asked questions

Can I get a solar loan with bad credit?

Often yes, but expect rates near the top of the 30%-plus range for unsecured loans. At those rates a lease, a PPA, or waiting to build credit may make more sense.

Does a solar loan put a lien on my house?

A HELOC or home equity loan does. Many unsecured installer loans file a UCC fixture filing on the panels instead. Ask the lender which applies before you sign.

Can I pay off a solar loan early?

Most allow it without a penalty, but check the contract. If a dealer fee was added to the principal, paying early doesn’t get that fee back.

Is a loan better than a lease?

Over 20–25 years, owning through a fee-free loan usually saves more. A lease can still suit you if you don’t want to handle repairs or can’t qualify for a good rate.

Sources

• CFPB: Issue Spotlight on Solar Financing
• US Department of Energy: Homeowner’s Guide to Solar Financing
• Credible: Solar loan rates by lender
• Bankrate: Current HELOC rates

Last updated: October 2026. Rates and terms change often; confirm current offers with lenders. This article is for information only and is not financial advice.