Choosing the right solar financing option can be just as important as choosing the right panels. The four main solar financing options — cash purchase, solar loan, solar lease, and Power Purchase Agreement (PPA) — each carry different implications for ownership, tax credits, long-term savings, and resale value. This guide breaks down how each works so you can make a confident, informed decision.
Before diving in, it helps to know your baseline: check out our guide to solar panel costs to understand what you’re financing, and our solar tax credits and incentives page to see what financial benefits may be available to you.
Cash Purchase
How It Works
A cash purchase means paying the full system cost upfront — no lender, no monthly payment, no interest. According to Bluetti Power, homeowners who pay cash own the solar system outright from day one, avoid all financing charges and processing fees, and begin enjoying savings from the very first month.
Who owns the system: You do, immediately.
Who claims the tax credit: You do. Because you own the system, you’re eligible to claim the federal Investment Tax Credit (ITC) and any applicable state incentives or rebates.
Pros and Cons
Pros:
- Maximum long-term savings — no interest paid over the life of the loan
- Full eligibility for the federal ITC and state incentives
- Increases home resale value
- No contract obligations or escalator clauses
Cons:
- Requires significant upfront capital (typically $15,000–$30,000+)
- Ties up cash that could be invested elsewhere
- Not accessible for homeowners without available savings
Typical Terms
No financing terms apply. The system is yours the moment installation is complete.
Solar Loan
How It Works
A solar loan lets you own the system while spreading the cost over time. You borrow the purchase price from a lender and repay it in monthly installments, much like a home improvement loan. According to Bluetti Power, solar loans typically require a minimum FICO credit score of 620, and many banks and credit unions offer solar-specific financing with loan terms of up to 20 years.
Who owns the system: You do, from the date of installation.
Who claims the tax credit: You do. Loan borrowers retain full ownership and are therefore eligible for the federal ITC. Many homeowners apply their tax credit toward the loan principal in year one to reduce the outstanding balance.
Solar Loan Products
Several financing channels are available:
- Home equity loans / HELOCs: Secured against your home’s equity. Generally offer lower interest rates but put your home at risk if you default.
- Solar-specific lenders: Companies like GreenSky, Mosaic, and Sunlight Financial specialize in residential solar loans, often offering competitive rates and streamlined approval through your installer.
- Bank and credit union loans: Many traditional lenders offer unsecured personal loans or dedicated solar products. Terms and rates vary widely.
Pros and Cons
Pros:
- You own the system and claim all tax credits and incentives
- $0 or low down payment options available
- Builds equity and can increase home value
- Loan terms up to 20 years keep monthly payments manageable
Cons:
- Interest charges reduce overall ROI compared to cash
- Requires a minimum credit score (typically 620+)
- Some solar loans include a “dealer fee” that inflates the effective interest rate — read the fine print carefully
Typical Terms
Loan terms commonly range from 5 to 20 years. Interest rates vary based on credit score, loan type, and lender — secured loans (home equity) typically carry lower rates than unsecured solar-specific products.
Solar Lease
How It Works
A solar lease is a form of third-party ownership (TPO). The solar company installs panels on your roof, retains ownership of the system, and charges you a fixed monthly fee to use the electricity it generates. According to EnergySage, solar leases charge a fixed monthly amount regardless of how much electricity the panels actually produce.
Who owns the system: The solar company.
Who claims the tax credit: The solar company. As EnergySage notes, because the solar company owns the system, it claims all available solar incentives, including the federal ITC and rebates. Homeowners cannot claim these incentives directly — though competitive providers should pass the value through as lower monthly rates.
Pros and Cons
Pros:
- $0 down in most cases
- No responsibility for maintenance, repairs, or monitoring
- Predictable monthly costs
- According to EnergySage, homeowners can typically expect 10–30% savings on utility bill costs compared to standard utility rates
Cons:
- You don’t own the system and cannot claim the federal ITC
- Lease agreements often include annual payment escalators (typically 1–3% per year)
- Can complicate home sales — the lease must be transferred to the buyer or bought out
- No increase in home equity from the system
Typical Terms
According to Bluetti Power, solar lease agreements typically span 20–25 years. At the end of the lease, homeowners can choose to upgrade the system, renew the lease, or purchase the system outright.
Power Purchase Agreement (PPA)
How It Works
A PPA is similar to a lease in that the solar company owns the system — but instead of paying a fixed monthly fee, you pay per kilowatt-hour (kWh) of electricity the panels produce. According to EnergySage, PPAs charge per kilowatt-hour of electricity the panels produce, making your monthly cost variable based on actual output.
According to Bluetti Power, the company that owns the solar system under a PPA is responsible for installation, maintenance, repair, and insurance, while the homeowner agrees to buy the system’s electricity output at a fixed rate typically lower than the current utility rate.
Who owns the system: The solar company.
Who claims the tax credit: The solar company, for the same reasons as a lease.
Pros and Cons
Pros:
- $0 down in most cases
- No maintenance or repair costs for the homeowner
- Rate is typically lower than local utility rates at signing
- Variable billing means you only pay for what the system produces
Cons:
- No ownership, no ITC eligibility
- PPA rates can escalate annually
- Long contract terms (20–25 years) create obligations that complicate home sales
- Savings depend on how utility rates change over time — if rates stay flat, PPA savings shrink
Typical Terms
PPA agreements typically span 20–25 years, mirroring lease structures. The per-kWh rate is set at signing and may include an annual escalator clause.
Side-by-Side Comparison
| Feature | Cash Purchase | Solar Loan | Solar Lease | PPA |
|---|---|---|---|---|
| Upfront cost | Full system cost | $0–low down | $0 | $0 |
| System ownership | Homeowner | Homeowner | Solar company | Solar company |
| Federal ITC eligibility | Yes | Yes | No | No |
| Monthly payment | None | Fixed (loan) | Fixed (flat fee) | Variable (per kWh) |
| Maintenance responsibility | Homeowner | Homeowner | Solar company | Solar company |
| Typical term | N/A | 5–20 years | 20–25 years | 20–25 years |
| Long-term ROI | Highest | High | Moderate | Moderate |
| Home sale complexity | Simple | Simple | Transfer/buyout needed | Transfer/buyout needed |
PACE Financing: A State-Specific Option
Property Assessed Clean Energy (PACE) financing is a government-backed program available in select states that allows homeowners to finance solar installations through their property tax bill. The loan is repaid as an addition to annual property taxes rather than as a separate monthly payment.
PACE can be attractive for homeowners who don’t qualify for traditional loans, but it carries unique risks. The CFPB finalized a rule requiring that PACE borrowers receive standard mortgage disclosures so they can compare the cost of PACE financing to other options. This rule was designed to address concerns that homeowners were taking on PACE loans without fully understanding the terms or costs relative to alternatives.
Key PACE considerations:
- Repaid through property taxes — a lien is placed on your home
- Available in California, Florida, Missouri, and a growing number of states
- The CFPB’s new disclosure requirements make it easier to compare PACE to other solar financing options
- Defaulting on a PACE loan can result in tax foreclosure, not just credit damage
How Financing Choice Affects Long-Term ROI
Your financing method has a direct impact on the return you’ll see over the life of your system. For a detailed breakdown, see our solar panel ROI and savings guide.
As a general principle:
- Cash buyers achieve the highest ROI because they pay no interest and claim the full federal ITC. Payback periods typically run 6–10 years, after which electricity is essentially free.
- Loan borrowers achieve strong ROI, especially if they apply their ITC refund to the principal in year one. Interest costs reduce net savings compared to cash, but ownership benefits remain intact.
- Lease and PPA customers see more modest financial returns. Savings of 10–30% on utility bills are real, but the absence of ITC eligibility and the presence of escalator clauses mean the long-term picture is less favorable than ownership-based options.
The U.S. Department of Energy’s Homeowner’s Guide to Solar Financing describes the advantages and disadvantages of each option compared to a direct cash purchase, and is a useful reference when evaluating proposals.
Red Flags in Solar Loan and Lease Contracts
Before signing any solar financing agreement, watch for these warning signs:
- Dealer fees buried in the APR: Some solar-specific loans include a dealer fee (sometimes called an “origination fee”) that significantly raises the effective interest rate. Ask for the all-in APR, not just the stated rate.
- Aggressive escalator clauses: Lease and PPA contracts often include annual rate increases of 1–3%. Over 20 years, a 2.9% escalator can push your monthly payment well above initial utility rates.
- Automatic renewal language: Some leases renew automatically unless you provide written notice months in advance. Check the end-of-term provisions carefully.
- Prepayment penalties: Some loan products penalize early payoff. If you plan to apply your ITC refund to the principal, confirm there’s no prepayment fee.
- Vague production guarantees: A reputable installer will provide a production estimate and, in some cases, a performance guarantee. Vague or absent guarantees are a red flag.
- High-pressure timelines: Any installer pushing you to sign same-day without time to review financing documents warrants caution. See our guide on how to choose a solar installer for more vetting tips.
Choosing the Right Path
No single financing option is right for every homeowner. The best choice depends on your available capital, credit profile, tax liability, and how long you plan to stay in your home.
- Cash is best if you have the savings and want maximum long-term returns.
- A solar loan is the best option for most homeowners — you get ownership benefits, ITC eligibility, and manageable monthly payments.
- A lease or PPA makes sense if you want immediate savings with zero upfront cost and are comfortable not owning the system.
- PACE may work if you don’t qualify for traditional financing, but review the CFPB disclosures carefully before committing.
Getting quotes from multiple installers is the most reliable way to compare financing offers side by side. Different installers partner with different lenders, and the terms can vary significantly even for the same loan product.