Best Solar Loans in 2026: Rates, Terms, and What to Watch Out For

The way most solar companies talk about financing is designed to obscure the true cost. Promotional interest rates look great on marketing materials. The dealer fees buried in the loan principal do not appear anywhere in the pitch.

Here is how solar financing actually works in 2026, which loan types are genuinely competitive, and exactly how to find the hidden costs before you sign.

The Solar Loan Landscape in 2026

Solar buyers have five main financing options:

1. Installer-offered loans (via GreenSky, Mosaic, Dividend Finance, Goodleap)
2. Home equity loans or HELOCs
3. Personal loans (unsecured, from banks, credit unions, or online lenders)
4. PACE financing (Property Assessed Clean Energy)
5. State-sponsored green loan programs

Each has a different risk profile, cost structure, and use case.

Option 1: Installer-Offered Solar Loans

Most solar companies partner with one or more solar lending companies — GreenSky, Mosaic, Dividend Finance, and Goodleap are the largest. Your installer facilitates the loan application during the sales process.

Typical rates:

• Promotional: 0.99%–2.99% APR (with dealer fee, typically 18–25% of loan amount)
• Non-promotional: 5.99%–12.99% APR (lower or no dealer fee)

The Dealer Fee Explained

This is the single most important concept in solar financing and the most consistently misrepresented.

When a solar company offers you 0.99% financing, the lender does not absorb the below-market rate out of goodwill. The installer pays a "dealer fee" to the lender — typically 18–25% of the loan principal — which compensates the lender for the low rate.

Where does the money for that dealer fee come from? You. The installer adds the dealer fee to the system price — but does not itemize it.

Example:

• Cash price of your system: $25,000
• Financed price: $29,750 (19% dealer fee absorbed into price)
• Loan amount: $29,750 at 1.99% APR over 20 years
• Total cost over life of loan: ~$37,000

Compare that to:

• Cash price: $25,000
• Standard loan at 6.99% APR over 12 years: ~$34,000 total (and paid off 8 years sooner)

The 1.99% "promotional" loan cost you more money if you hold it to maturity.

How to find the dealer fee: Ask your installer for the cash price and the financed price on the same system, itemized. The difference is effectively the dealer fee. If they refuse to provide a cash price, walk away or get competing quotes.

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Option 2: Home Equity Loan or HELOC

How it works: You borrow against your home's equity. Interest rates are based on the prime rate plus a margin.

Typical rates in 2026: 7.5%–9.5% APR for HELOCs, 6.5%–8.5% APR for fixed-rate home equity loans (varies by lender and credit profile).

Pros:

• No dealer fee — you are borrowing directly from a bank
• Interest may be tax-deductible (consult a tax professional — applies for home improvement purposes)
• No lien from the solar company; clean title
• Competitive rates for borrowers with strong equity and credit

Cons:

• Secured by your home — default risk
• Closing costs ($500–$2,500 depending on lender)
• Variable rate risk for HELOCs if rates rise
• Requires home equity (typically 15–20% remaining equity minimum)

Best for: Homeowners with significant equity, credit score above 720, who want to avoid the dealer fee trap and can tolerate a secured loan.

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Option 3: Personal Loans (Unsecured)

How it works: You borrow from a bank, credit union, or online lender without collateral.

Typical rates in 2026: 8%–20% APR, depending heavily on credit score and lender.

Pros:

• No dealer fee
• No lien on your home
• Faster application process than HELOC
• Available even with limited home equity

Cons:

• Higher rates than HELOCs or good solar loans
• Shorter maximum terms (typically 5–7 years) means higher monthly payments
• Not ideal for large solar systems — math often does not work for systems over $20,000

Best for: Smaller systems ($10,000–$15,000 range), borrowers with strong credit scores and no home equity to tap, or borrowers who want to avoid home-secured debt.

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Option 4: PACE Financing

How it works: Property Assessed Clean Energy loans attach to your property as a tax assessment, not a personal loan. Repaid through your property tax bill.

Typical rates in 2026: 5%–8% APR, though terms vary by program and state.

Pros:

• No minimum credit score requirement
• Can qualify borrowers who would not qualify for traditional loans

Cons:

• Creates a super-priority lien on your home (takes priority over your mortgage in default)
• May make refinancing or selling complicated — mortgage lenders treat PACE liens as problematic
• Not available in all states (active in CA, FL, MO, and others)
• Higher risk for vulnerable borrowers — PACE has faced regulatory scrutiny and class-action suits

Best for: Homeowners with poor credit who have exhausted other options and fully understand the lien implications. Not a first-choice option.

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Option 5: State-Sponsored Green Loan Programs

Several states offer below-market financing for solar through state energy offices or utility programs.

Examples:

• Connecticut Green Bank: Rates from 3.99% APR, no dealer fee
• New York Green Bank: Wholesale financing channeled through local lenders
• Massachusetts HEAT Loan: 0% for qualifying income levels
• California SCEIP / GreenFinanceSF: Regional programs in select jurisdictions

Best for: Residents of states with active green lending programs — rates are genuinely competitive and there is no dealer fee. Check your state's energy office website before taking any other financing.

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Solar Loan Comparison Table

| Loan Type | Rate Range | Dealer Fee? | Secured? | Best For |

|--|--|--|--|--|

| Installer loan (promotional) | 0.99%–3% | Yes (18–25%) | No | Day-one savings marketing |

| Installer loan (standard) | 5.99%–12.99% | Partial (5–12%) | No | Convenience shoppers |

| HELOC | 7.5%–9.5% | No | Yes (home) | High-equity homeowners |

| Home equity loan (fixed) | 6.5%–8.5% | No | Yes (home) | Rate certainty seekers |

| Personal loan | 8%–20% | No | No | Small systems, no equity |

| PACE | 5%–8% | No | Yes (tax lien) | Poor credit, all options exhausted |

| State green loan | 0%–4.99% | No | Varies | Residents of qualifying states |

The Right Loan for Most Homeowners

Step 1: Check if your state has a green lending program. If yes, start there.

Step 2: Get the cash price and financed price from your installer on the same quote. Calculate the implied dealer fee. If it exceeds 10%, the promotional rate is expensive.

Step 3: If you have home equity and a strong credit score (720+), get HELOC or home equity loan quotes from your bank or credit union. Compare total cost to the installer loan with dealer fee included.

Step 4: For the installer loan route, ask specifically about "lowest-rate non-promotional loans" — Mosaic, Goodleap, and Dividend all offer 5.99%–7.99% products with lower or no dealer fees.

Key Takeaways

• "0% APR" solar loans almost always include a 15–25% dealer fee that inflates your system cost by $3,000–$8,000
• The total cost of a promotional low-rate loan often exceeds a standard-rate loan paid off faster
• HELOCs and home equity loans typically beat installer financing for homeowners with strong equity and credit
• State green loan programs are the best option when available — check before committing to installer financing
• Always ask for the cash price so you can compare it to the financed price and find the hidden dealer fee

Related articles:

• Solar Lease vs. Buy in 2026
• How to Finance Solar With a Home Equity Loan or HELOC
• The Solar Loan Trap: Why '0% Financing' Often Costs Homeowners $8,000 More

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