Solar Loans in 2026: Best Financing Options After the Tax Credit

Solar loans were the most popular way to finance residential solar for the better part of a decade. The playbook was simple: finance the full system cost, claim the 30% federal tax credit on your tax return, then apply that lump sum to your loan principal around month 18. Your balance dropped by nearly a third before you had made two years of payments.

That playbook is dead.

The One Big Beautiful Bill Act, signed July 4, 2025, repealed the residential Investment Tax Credit (Section 25D) effective December 31, 2025. If you take out a solar loan in 2026, you are financing the full cost for the full term. No lump-sum paydown. No re-amortization windfall. Just principal, interest, and monthly payments for 10 to 25 years.

This changes the economics significantly — and it has also exposed financing practices that were always problematic but are now impossible to ignore. This guide covers what solar loans really cost in 2026, how to find the best rates, and how to protect yourself from predatory practices that the Consumer Financial Protection Bureau (CFPB) is actively targeting.

Table of Contents

1. How Solar Loans Work in 2026
2. The ITC Is Gone: Why That Changes Everything About Solar Loans
3. Current Solar Loan Rates and Terms
4. Dealer Fees: The Hidden Cost That Can Add 30% to Your Loan
5. Secured vs. Unsecured Solar Loans
6. Best Solar Lenders in 2026
7. HELOC: The Smarter Alternative for Many Homeowners
8. How to Compare Solar Loan Offers
9. Break-Even Analysis: Solar Loans Without the ITC
10. Red Flags in Solar Financing
11. FAQ: People Also Ask
12. The Bottom Line

How Solar Loans Work in 2026

A solar loan finances the purchase and installation of a residential solar panel system. You borrow money from a lender, the installer puts panels on your roof, and you make monthly payments over a fixed term. You own the system from day one.

The basics:

• Loan amounts: Typically $15,000 to $45,000, depending on system size and equipment choices
• Terms: 10 to 25 years
• APR: 5% to 9% for well-qualified borrowers (but read the dealer fee section below — the advertised rate often masks the true cost)
• Down payment: Usually $0, though putting money down reduces your total interest paid
• Credit requirements: Most lenders require a minimum FICO score of 650, with the best rates reserved for 720+

Unlike a lease or PPA, a loan gives you full ownership. You keep all state incentives, SRECs, and net metering credits. The system adds $15,000 to $20,000 to your home value. And once the loan is paid off, every kilowatt-hour your panels produce is effectively free electricity for the remaining life of the system.

Read more →

The ITC Is Gone: Why That Changes Everything About Solar Loans

To understand why 2026 is a fundamentally different landscape for solar loans, you need to understand how the tax credit used to work with loan financing.

The old playbook (2015-2025)

1. Homeowner finances a $30,000 solar system with a $0-down solar loan
2. System gets installed and interconnected
3. Homeowner claims the 30% ITC on their federal tax return — $9,000 back
4. Around month 18, that $9,000 gets applied to the loan principal
5. The loan re-amortizes around the lower balance, and monthly payments drop — or the loan term shortens significantly

Many lenders built their entire product around this structure, offering artificially low payments for the first 18 months and expecting the tax credit to cover the gap.

The 2026 reality

That structure is gone. When you take out a solar loan in 2026:

• You finance the full system cost for the full loan term
• There is no lump-sum paydown at month 18
• Monthly payments are higher than they were for equivalent loans in 2025
• Total interest paid over the life of the loan is substantially more
• The break-even point extends by roughly 43%, or 2 to 4 additional years

Example: $26,000 system, 15-year loan at 7% APR

The loan still produces meaningful savings over 25 years. But the monthly cash-flow advantage is thinner, the payback is longer, and the total cost of financing is significantly higher.

Current Solar Loan Rates and Terms

As of Q1 2026, here is what the solar loan market looks like for borrowers with good to excellent credit (FICO 700+):

Important caveat: These are the advertised APRs from solar-specific lenders. The actual cost of many solar loans is substantially higher due to dealer fees baked into the principal. More on that in the next section.

For borrowers with credit scores below 700, rates can climb well above 10%. Below 650, most solar-specific lenders will decline the application, though some subprime options exist at rates that make the economics very difficult to justify.

Shorter terms save you serious money

The difference between a 10-year and 25-year loan on a $26,000 system at 7% APR is stark: roughly $20,000 in additional interest. If your budget can handle the higher monthly payment of a shorter term, that is by far the better financial decision.

Dealer Fees: The Hidden Cost That Can Add 30% to Your Loan

This is the single most important section of this guide. If you read nothing else, read this.

What dealer fees are

When a solar installer partners with a financing company (Mosaic, Sunlight Financial, GoodLeap, Dividend, etc.), the lender charges the installer a "dealer fee" — a percentage of the loan amount that compensates the lender for offering the financing program and buying down the interest rate.

Here is where it gets predatory: the installer passes that dealer fee on to you by inflating the financed price of your system. The fee gets rolled into your loan balance without appearing as a separate line item. It is hidden inside a higher principal.

How much are we talking about?

Dealer fees on solar loans currently range from 15% to 40% of the system cost, with the average in 2026 sitting around 22%. On a system with a cash price of $26,000, a 22% dealer fee adds $5,720 to your loan — meaning you are actually financing $31,720.

That $7,800 dealer fee on a 30% markup? Over a 20-year loan at 7%, it costs you an additional $14,500 in principal plus interest. You are paying nearly $15,000 extra for the privilege of getting what appears to be a low APR.

Why the CFPB is cracking down

The CFPB issued a formal report and consumer advisory warning about predatory solar lending practices — specifically, cramming markup fees into loan balances without adequate disclosure and misrepresenting energy savings.

As of March 2026, the CFPB's PACE loan rule has taken effect, and multiple state attorneys general — including Minnesota — have filed suits against solar lenders for deceptive practices. California's SB 784 now requires oral and written disclosure of dealer fees before a homeowner signs a loan agreement.

How to protect yourself

Always ask for the cash price first. Before any financing discussion, get the installer's cash price for the system in writing. Then compare it to the financed amount on any loan offer. The difference is the dealer fee. If the installer refuses to give you a cash price, walk away.

Read more →

Secured vs. Unsecured Solar Loans

Solar loans come in two basic categories, and the distinction matters for your rates, your risk, and your options.

Unsecured solar loans

Most solar-specific loans from companies like GoodLeap, Mosaic, and Sunlight Financial are unsecured personal loans. They are not backed by your home.

Pros:

• No risk to your home if you default
• Faster approval process — no appraisal required
• No equity needed in your home

Cons:

• Higher interest rates (typically 1–3% above secured options)
• Almost always include dealer fees
• Shorter maximum terms at competitive rates

Secured solar loans (home equity products)

HELOCs and home equity loans use your home as collateral. This reduces the lender's risk and gets you a better rate.

Pros:

• Lower interest rates (often 2–4% below unsecured solar loans)
• No dealer fees — ever
• Interest may be tax-deductible (see HELOC section below)
• Higher borrowing limits available

Cons:

• Your home is collateral — foreclosure risk if you default
• Requires sufficient home equity (typically 15–20% minimum)
• Longer approval process with appraisal
• Closing costs may apply

For homeowners with equity in their home and strong credit, secured financing almost always results in a lower total cost than an unsecured solar loan — even when the unsecured loan advertises a flashy low APR.

Best Solar Lenders in 2026

Not all solar lenders are created equal. Here is how the landscape breaks down by lender type.

Solar-specific lenders (use with caution)

These companies — GoodLeap, Mosaic, Sunlight Financial, Dividend Finance — dominate the residential solar loan market because they partner directly with installers. The installer handles the paperwork for you, which is convenient. But that convenience comes at a steep price: dealer fees of 15% to 40%.

If you use a solar-specific lender, understand that the low APR is subsidized by an inflated loan balance. Run the total-cost comparison described in the "How to Compare" section below.

Credit unions (often the best deal)

Credit unions are member-owned, not-for-profit institutions. They do not have shareholders demanding maximum margins, which translates directly into better loan terms: no dealer fees, lower rates, and transparent pricing. The APR you see is the APR you pay.

Notable credit union options in 2026:

• Clean Energy Credit Union: The standout option — a federally chartered credit union focused exclusively on clean energy lending. Available nationwide (you join by becoming a member of a partner organization, typically for a small donation). No dealer fees, competitive rates, and terms designed specifically for solar.
• Star One Credit Union: APRs from 6.25% to 8.00% as of March 2026.
• USC Credit Union: Rates as low as 2.99% APR for the most qualified borrowers with discount program participation.
• Matadors Community Credit Union: 12-year terms at approximately 4.74% APR.
• Affinity Plus Federal Credit Union: Fixed 5.49% APR on 5-year home solar loans up to $100,000.

The trade-off: you find your own installer, coordinate the paperwork yourself, and meet the credit union's membership requirements. But that extra hour of effort can save you $5,000 to $15,000 over the life of the loan compared to a dealer-fee-laden alternative.

Online personal lenders (fee-free alternatives)

Lenders like LightStream (a division of Truist) offer unsecured personal loans for solar at rates starting around 6.49% APR with no dealer fees and no origination fees. You borrow a fixed amount, receive the funds, and pay the installer directly. The rate is higher than a credit union HELOC, but lower than the true cost of most dealer-fee solar loans.

State green banks

Several states operate green banks that offer below-market solar financing. Connecticut Green Bank, NY Green Bank, and similar programs in Michigan, Colorado, and other states provide low-interest loans specifically designed for residential clean energy projects. These programs often have zero dealer fees and may offer income-based assistance. Check your state energy office for available programs.

HELOC: The Smarter Alternative for Many Homeowners

A Home Equity Line of Credit may be the single best way to finance solar panels in 2026, particularly for homeowners with significant home equity.

Why a HELOC beats most solar loans

The tax deduction advantage

Here is a benefit that most solar loan comparisons overlook entirely: HELOC interest is tax-deductible when the funds are used for a substantial home improvement — and solar panel installation qualifies. Under current IRS rules (through at least the end of 2026), you can deduct the interest on up to $750,000 of combined mortgage and HELOC debt ($375,000 if married filing separately) when the HELOC funds are used to buy, build, or substantially improve your home.

For a homeowner in the 24% federal tax bracket with a $26,000 HELOC at 7% interest, the deduction is worth roughly $4,000 to $5,000 over a 15-year repayment — partially replacing the old solar tax credit, albeit at a smaller scale.

Important: You must itemize deductions to claim this benefit. If you take the standard deduction, the HELOC interest deduction provides no value.

HELOC considerations

• Variable rates: Many HELOCs have variable interest rates. If rates rise, your payments increase. Some lenders offer fixed-rate draw options — ask specifically.
• Your home is collateral. If you cannot make payments, the lender can foreclose. Do not overextend.
• Equity required. You generally need at least 15–20% equity in your home after the HELOC draw.
• Closing costs. Some HELOCs carry appraisal fees, origination fees, or annual fees. Factor these into your total cost.

Read more →

How to Compare Solar Loan Offers

Never compare solar loans by APR alone. That single number can be deeply misleading when dealer fees are involved. Here is the comparison framework that gives you the real picture.

Step 1: Get the cash price

Ask every installer: "What is your cash price for this system, with no financing?" Get it in writing. This is your baseline.

Step 2: Get the financed price

Ask: "What is the total amount I will be financing?" If this number is higher than the cash price, the difference is the dealer fee.

Step 3: Calculate total cost of the loan

Total cost = (monthly payment x number of payments) + any down payment + any fees

Do this for every loan offer, including dealer-fee loans, credit union loans, HELOCs, and personal loans.

Step 4: Calculate the true effective interest rate

If a loan advertises 3.99% APR but includes a 25% dealer fee that inflates your principal from $26,000 to $32,500, you are not really paying 3.99%. Use an online loan calculator: input the original $26,000 as the loan amount, then enter the monthly payment from the $32,500 loan. The resulting interest rate is your true effective rate.

Step 5: Compare total 25-year cost with and without solar

The ultimate question: does this loan save me money compared to just paying my utility bill? Calculate your projected electricity costs over 25 years (with 3-5% annual rate escalation), then subtract the total cost of the solar loan. The difference is your net savings.

Break-Even Analysis: Solar Loans Without the ITC

Without the federal tax credit, the break-even math on a financed solar system has shifted substantially. Here is what realistic scenarios look like in 2026.

Scenario: Average U.S. homeowner

• System size: 8 kW
• Cash price: $26,000
• Loan terms: 15 years, 7% APR (no dealer fee — credit union loan)
• Monthly loan payment: $234
• Current monthly electric bill: $180
• Annual utility rate escalation: 3.5%
• Annual solar production value (year 1): $2,160

In this scenario, the homeowner is cash-flow negative initially — the loan payment exceeds electricity savings by about $54 per month. As utility rates rise and the loan payment stays fixed, the gap narrows and reverses. The break-even point occurs around year 13 to 14.

After the loan is paid off at year 15, the homeowner gets free electricity for the remaining 10 to 15 years of system life. Total 25-year net savings: approximately $18,000 to $24,000.

When a solar loan clearly makes sense

• Your monthly electric bill exceeds $200
• You live in a state with high or rapidly rising electricity rates (CA, MA, CT, NY, HI)
• You can secure financing at 7% or below with no dealer fees
• You plan to stay in your home for at least 10 years
• Your state offers additional incentives (SRECs, rebates, property tax exemptions)

When a solar loan is harder to justify

• Your monthly electric bill is under $120
• You live in a state with low electricity rates and weak net metering
• The best loan rate you can get is above 9%
• Dealer fees push your financed amount 25%+ above the cash price
• You plan to move within 5 to 7 years

Red Flags in Solar Financing

Watch for these warning signs that the CFPB and state attorneys general have flagged in the solar lending market.

1. The installer will not give you a cash price

If the sales rep deflects, avoids, or claims they "only offer financing," that is a major red flag. Every installer has a cash price. If they refuse to share it, they are hiding a large dealer fee.

2. The loan amount is much higher than the system value

If comparable systems in your area cost $25,000 to $28,000 but your loan is for $35,000, the extra $7,000 to $10,000 is almost certainly a dealer fee. Get multiple quotes to establish a fair cash price.

3. Unrealistic savings projections

If the installer's proposal shows your solar system will produce more electricity than your home uses, or projects utility rate increases of 6% or more per year to make the numbers work, the projections are inflated. Use the EIA's historical average of 3 to 4% annual rate increases as your benchmark.

4. Pressure to sign immediately

"This price is only good today" or "the incentive expires this week" are high-pressure tactics. Legitimate solar offers do not evaporate overnight. Take the paperwork home. Get a second quote. Run your own numbers.

5. 18-month payment escalation clauses

Some loans still carry terms designed around the old ITC structure: low payments for 18 months, then a significant jump. Without the tax credit to offset the increase, this payment balloon can be financially devastating. Read every page of the loan agreement.

6. Rushed paperwork or pre-completed documents

The CFPB has documented cases where solar installers present pre-completed loan applications, emphasize a low APR without explaining total cost, or rush homeowners through signing without adequate time to review terms. If the rep cannot clearly explain the total amount you will pay over the life of the loan, the APR is masking a high total cost. You have every right to take documents home and review them with a financial advisor or attorney.

FAQ: People Also Ask

What is a good interest rate for a solar loan in 2026?

For a well-qualified borrower (FICO 720+), a good rate on a fee-free solar loan is 5% to 7% APR in 2026. If you are being offered a rate below 4% from a solar-specific lender, there is almost certainly a large dealer fee hidden in the loan balance. The total cost matters more than the rate.

Can I still deduct solar loan interest on my taxes?

Not for a standard unsecured solar loan. However, if you finance solar panels with a HELOC or home equity loan, the interest is tax-deductible as long as the funds are used for home improvement and you itemize your deductions. This is one of the key advantages of using home equity financing for solar in 2026.

What credit score do I need for a solar loan?

Most solar lenders require a minimum FICO score of 650. The best rates and terms are available to borrowers with scores of 720 or above. Some credit unions may have more flexible qualification criteria, while subprime solar lenders may approve lower scores at substantially higher rates.

Are solar loans worth it without the tax credit?

For many homeowners, yes — but the math is tighter. A fee-free loan at 6% APR in a state with $0.18/kWh electricity will still produce meaningful 25-year savings. A dealer-fee-laden loan at a true effective rate of 12% in a low-cost state may not break even within the system's lifetime.

What is a dealer fee on a solar loan?

A dealer fee is a charge the lender assesses to the installer, which the installer passes on to you by inflating the financed price. Dealer fees range from 15% to 40% of the system cost and are rolled into your loan balance without appearing as a separate line item. The CFPB has identified this practice as a consumer protection concern.

Is a HELOC better than a solar loan?

For homeowners with sufficient equity and strong credit, a HELOC often delivers a lower total cost than a solar-specific loan. No dealer fees, potentially lower rates, and tax-deductible interest make HELOCs the most cost-effective option for many borrowers. The trade-off: your home serves as collateral.

How long does it take to break even on a financed solar system in 2026?

Without the ITC, break-even periods have extended to approximately 12 to 16 years — roughly 43% longer than in 2025. After break-even, the system produces free electricity for its remaining 10 to 15 years of useful life.

The Bottom Line

Solar loans still work in 2026. But the margin for error is thinner, the stakes of choosing the wrong loan are higher, and the financing industry's least transparent practices are now fully exposed without the tax credit to paper over inflated costs.

Here is the hierarchy of solar financing in 2026, ranked by total cost for most homeowners:

1. Cash purchase — lowest total cost, longest payback without the ITC, but highest lifetime savings
2. Credit union loan or HELOC — no dealer fees, competitive rates, tax-deductible interest (HELOC only), transparent terms
3. Online personal loan (e.g., LightStream) — no dealer fees, slightly higher rates, convenient process
4. Solar-specific lender loan — convenient but often the most expensive option after accounting for dealer fees

The single most important step you can take: get the cash price from every installer before discussing financing. That one question strips away the obfuscation and lets you see what you are actually paying for the equipment and installation versus what you are paying in hidden finance charges.

Solar panels remain one of the strongest long-term investments a homeowner can make in 2026. A well-financed system will still save you $18,000 to $30,000 over 25 years. The key is making sure your financing does not eat up the savings your panels are working to produce.