Cash vs. Loan vs. Lease/PPA: How to Pay for Solar in 2026

Short answer: Cash still gives you the biggest long-term savings. A loan gets you ownership without the upfront bill, but only if you compare total dollars paid. A lease or PPA is now the only way a federal solar tax credit can touch a home project. The company that owns the system claims that credit, and it doesn't have to pass the value on to you.

At a Glance

*Illustrative example with the assumptions spelled out below. Your numbers depend on your rate, roof, and state.

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The 2026 Twist: Only One Path Can Still Carry a Federal Credit

Until 2025, most buyers took the 30% residential credit (Section 25D). It expired December 31, 2025. The IRS counts the expense when the installation is completed, not when you sign or pay. A system finished in 2026 gets nothing, even if the contract was signed in 2025.

A different credit still exists: the Section 48E commercial investment credit. A homeowner who buys can't claim it. The company that owns a leased or PPA system can. That's why $0-down lease and PPA offers are more common in 2026 than they were a year ago.

Three things the sales pitch usually leaves out:

• The credit goes to the provider, not you. Nothing requires the provider to lower your price by the value of the credit. The only way to see whether you benefit is to compare the lease or PPA offer against a cash or loan quote for the same system.
• The 48E credit has a deadline. The July 4, 2026 start-of-construction date has already passed. New residential systems now generally have to be placed in service by December 31, 2027 to qualify. Providers that started construction (or safe-harbored equipment) before July 4 may qualify for longer. Either way, today's lease pricing may not last past 2027.
• Providers also have to meet new foreign-sourcing rules to claim the credit. That's the provider's compliance problem, not yours. It's one more reason lease terms may change.

For the full breakdown, see our 2026 solar tax credit guide and 2026 incentives guide.

What Each Option Really Costs Over 25 Years

Most financing articles stop at "cash saves the most." Here's roughly how much, using one home and one system run through each option.

The home in this example: a 12 kW system at the national average installed price of $31,135 (EnergySage, data updated September 2026), paying the U.S. average residential rate of 17.30¢/kWh (EIA, 2025).

What the numbers show:

• Cash wins by roughly $20,000 or more over every financed path in this example.
• The escalator matters more than the starting price. The same PPA at the same 13¢ starting price loses about $23,000 in savings when prices rise 2.99% a year instead of staying flat. By year 25, the escalating PPA saves you about $734 a year, compared with $2,725 on the flat PPA.
• The loan with a dealer fee came out ahead of the 7.99% loan here. That's not a reason to like dealer fees. It shows that neither the APR nor the fee tells you enough on its own. Compare total dollars paid. Paid in cash, the same $31,135 system at 2.99% with no fee would cost about $41,400 over 20 years instead of $51,755.
• Owners pay for repairs; lease and PPA customers usually don't. The cash and loan figures above don't include repairs such as a future inverter replacement, so the real gap is somewhat smaller than shown.

Assumptions (not verified figures, and your numbers will differ): production of 1,400 kWh per kW per year; panel output falling 0.5% a year; utility rates rising 2.5% a year; every kWh credited at full retail value (this overstates savings in net-billing states such as California); loan rates and dealer fee picked as examples within the range the CFPB describes, not quotes from a specific lender; PPA starting price of 13¢/kWh (about 25% below the utility rate) as an illustration only. Taxes, insurance, repairs and home-sale effects are excluded. For your address, run PVWatts or get a real quote.

Paying Cash: Best Return, No Federal Help

You pay the full price and own the system from day one.

• Why it wins: no interest, no fees, no escalator, and you keep every dollar of bill savings plus any state or utility incentives.
• What changed in 2026: no 30% credit to shorten payback. In our example the cash buyer breaks even around year 10. Where you live moves that more than anything else: our solar break-even map found electricity rates explain about 57% of the variation in payback between states, while sunshine explains only about 4%.
• Good fit if: you have the savings, expect to stay in the home 10 or more years, and want the highest lifetime return.
• Watch for: tying up emergency savings. Solar isn't a liquid asset.

Solar Loan: Ownership Without the Upfront Bill

You borrow the price and repay it over 10–20 years. You own the system, so all bill savings and state incentives are yours.

• Why it works: ownership economics with little or nothing down. On a low-rate loan, the monthly payment can come in below the bill savings from the first year.
• The trap: dealer fees. Lenders and installers often add a "dealer," "program," or "platform" fee to the financed price. The Consumer Financial Protection Bureau found these typically run 10%–30% of the cash price and can exceed 50%. A $30,000 system with a 30% fee becomes a $39,000 loan.
• The fix: ask every installer for the cash price and the financed price in writing, side by side. The gap is the fee. Then compare total dollars paid over the loan, not the monthly payment or the APR.
• Good fit if: you want to own the system, have solid credit, and will do the total-cost math.

More pitch tactics to watch for: solar sales red flags.

Lease or PPA: The 48E Path

A company installs and owns the system on your roof. You pay to use it.

Lease vs. PPA: the one real difference

• Lease: a fixed monthly payment, however much power the panels make.
• PPA (power purchase agreement): you pay a set price per kWh the panels actually produce, usually below the utility's rate. Your bill goes up and down with sunshine.

Why it can make sense in 2026

• $0 down, no repairs: monitoring and maintenance are typically the provider's job.
• It's the only route where a federal credit applies at all. If the provider passes part of it through, you get immediate savings with no upfront cost.
• Prepaid leases and PPAs exist in some states. You pay upfront, the provider still owns the system and claims 48E, and you avoid the monthly payment. Offered only in select markets.

What to check before signing

1. The escalator. 0.99%, 1.99%, and 2.99% are common. As our example shows, a 2.99% escalator can wipe out more than half the lifetime savings. Ask for a 0% option and compare.
2. The first-year price vs. your utility rate. If the discount is small and the escalator runs faster than your utility's rate increases, you can end up paying more than the utility later in the contract.
3. The term and the buyout. Contracts commonly run about 25 years. Ask when you can buy the system out, and how the price is set.
4. Home-sale terms. A buyer has to qualify for and accept the transfer, or you may have to buy the system out. Get the transfer process in writing.
5. Proof of pass-through. Ask for a cash-purchase quote for the same system. If the lease is barely cheaper than financing it yourself, you're not getting the credit's value.

Good fit if: you can't or don't want to put money down, don't want repair responsibility, and understand you're renting.

How to Choose

• Have the cash and plan to stay 10+ years? Pay cash. It had the highest lifetime return in every scenario we ran.
• Want to own but can't pay upfront? Take a loan, and choose on total dollars paid, not APR or monthly payment.
• Want $0 down and zero maintenance? A lease or PPA, but only with a low or 0% escalator and a written price you can compare against a purchase quote.
• Might sell within a few years? Owning is simpler at sale time. If you lease, read the transfer terms first.

The fastest way to settle it: put a cash quote and a lease quote for the same system side by side. Our free solar quote comparison tool does the math.

Your State Changes the Answer

Two local factors move every option's math more than the financing does:

• Your electricity rate. Higher rates mean every kWh of solar is worth more, which shortens cash payback and widens lease savings. See where your state lands on our solar break-even map.
• How your utility credits exported power. Full-retail net metering keeps the savings above intact. Net billing (California, for example) credits exports at a lower value, and that's where adding a battery matters. Rules by state: net metering by state (2026).

Related: How much does solar cost in 2026 · Is solar worth it in 2026

Frequently Asked Questions

Is it better to buy or lease solar in 2026?
Buying with cash gives the highest lifetime savings, because you pay no interest, fees or annual price increases. A loan keeps ownership but adds interest and often dealer fees. A lease or PPA needs little or no money upfront and the provider handles repairs, but lifetime savings are usually lower, especially with an annual escalator. In 2026 no homeowner who buys can claim a federal solar tax credit.

Can I get the 30% solar tax credit if I lease in 2026?
Not directly. The 30% residential credit (Section 25D) expired December 31, 2025. With a lease or PPA, the company that owns the system may claim the commercial Section 48E credit. The company is not required to pass that value to the homeowner. Compare the lease price against a purchase quote for the same system to see whether you benefit. See our 2026 tax credit guide.

How long will solar leases and PPAs keep the 48E tax credit?
Under the One Big Beautiful Bill Act, solar projects that did not begin construction by July 4, 2026 must generally be placed in service by December 31, 2027 to qualify for the Section 48E credit. Lease and PPA pricing that depends on that credit may change after 2027.

What is the difference between a solar lease and a PPA?
In both, a third party owns the solar system on your roof. With a lease you pay a fixed monthly amount regardless of how much power the panels produce. With a power purchase agreement (PPA) you pay a set price per kilowatt-hour of electricity the panels actually generate, usually below your utility's rate.

What is a solar lease escalator?
An escalator is a built-in annual price increase in a solar lease or PPA, commonly 0.99%, 1.99% or 2.99% per year. Over a 25-year contract it can have a large effect. In one illustrative example, a 2.99% escalator cut lifetime savings by about $23,000 compared with the same contract at 0%.

How do I spot a dealer fee on a solar loan?
Ask the installer for the cash price and the financed price of the same system in writing. The difference is the dealer fee. The Consumer Financial Protection Bureau found these fees typically run 10% to 30% of the cash price and can exceed 50%. Compare offers by total dollars paid over the loan, not by APR or monthly payment.

How much does a home solar system cost in 2026?
The national average installed price is about $2.60 per watt before incentives, or about $31,135 for a typical 12 kW system, according to EnergySage marketplace data updated in September 2026. Prices vary by state and installer. No federal tax credit reduces that price for homeowners who buy in 2026. See our 2026 cost guide.

Get a Cash Quote and a Lease Quote for Your Roof, Side by Side

National averages can't tell you which option wins at your address. Your rate, your roof, and your state's rules decide it.

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Sources

• Internal Revenue Service — FAQs for modification of sections 25C, 25D and others under Public Law 119-21 (One Big Beautiful Bill)
• Solar Energy Industries Association — Explained: The Clean Energy Provisions in the One Big Beautiful Bill
• SEIA / Wood Mackenzie — Solar Market Insight Report, Q3 2026
• Consumer Financial Protection Bureau — Issue Spotlight: Solar Financing
• EnergySage — Solar Panel Cost in 2026 (marketplace data updated September 2026)
• U.S. Energy Information Administration — Electricity prices and factors affecting prices
• Utility Dive — Solar industry looks to third-party ownership as 25D tax credit winds down

How your utility pays you matters more than ever in 2026. See the rules for every state in our Net Metering by State (2026) guide.