Buying vs. Leasing Solar: Why You Should Avoid PPAs (2026)

The "Free Solar" Pitch: A Financial Deep Dive for 2026

Ding dong. "Hi, I noticed your neighbors have high electric bills. We have a program where we can put solar on your roof for $0 Down, and you just pay for the power at a cheaper rate than the utility. It costs you nothing."

This is the Power Purchase Agreement (PPA) pitch. It is the most common way solar is sold in America, and for many homeowners, it is a financial trap that can devalue your home and complicate your life for 25 years.

But for others, it is the only way to go solar.

This guide ignores the sales pitch and looks at the raw contracts. We will compare Cash, Loans, and PPAs/Leases to see which one actually builds wealth.

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Part 1: The Three Ways to Pay

Solar is an asset, like a car or a house. You can buy it with cash, finance it with a loan, or rent it (lease).

1. Cash Purchase (The Gold Standard)

You write a check for the system. You own it on Day 1.

• Cost: ~$3.00/Watt. (A 10kW system costs $30,000).
• Incentives: You claim the 30% Federal Tax Credit (ITC). Net Cost: $21,000.
• Monthly Payment: $0.
• Electricity Cost: $0 (after ROI).
• ROI: typically 6-8 years.
• Lifetime Savings: $50,000 - $80,000.

2. Solar Loan (The Mortgage Model)

You borrow the money from a bank (or solar lender like Mosaic/GoodLeap). You still "own" the system.

• Cost: The bank pays the installer $30,000. You pay the bank monthly.
• Incentives: You still get the 30% Tax Credit. (Lenders usually expect you to pay this lump sum into the loan by Month 18 to keep payments low).
• Monthly Payment: Often equal to or lower than your old electric bill.
• Lifetime Savings: $30,000 - $60,000 (Inteerst eats some potential profit).
• Dealer Fees: Warning. Low interest rate loans (e.g. 3.99%) often have massive "Dealer Fees" (15-30%) baked into the upfront price. A $30k system might become a $40k loan.

3. Third-Party Ownership (PPA / Lease)

This is the "Free Solar" pitch. SunRun, Sunnova, or Tesla owns the panels on your roof. You just buy the electricity they produce.

• PPA (Power Purchase Agreement): You pay for every kWh meantured. (e.g., $0.16/kWh).
• Lease: You pay a flat monthly rent (e.g., $150/mo) regardless of production.
• Incentives: The Solar Company keeps the 30% Tax Credit.
• Lifetime Savings: $5,000 - $15,000.
• Risk: High.

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Part 2: The "Escalator" Trap (The Silent Killer)

If you sign a PPA, look specifically for the "Annual Escalator" clause. Sales reps gloss over this. "It just goes up a tiny 2.9% a year, just like inflation!"

Let's do the compounding math on a 2.9% escalator over 25 years.

• Year 1: $0.16 / kWh (Cheaper than Utility at $0.20).
• Year 10: $0.21 / kWh.
• Year 20: $0.27 / kWh.
• Year 25: $0.32 / kWh.

The Gamble: You are betting that the Utility rates will rise faster than 2.9% a year every single year for 25 years. In states like California (where PG&E rates rise 10%/year), a PPA is still a win. In states with stable cheap power (like Texas or Utah), you might cross the "break-even" point in Year 15 and end up paying more for your solar power than grid power.

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Part 3: The Real Estate Nightmare (Selling Your Home)

This is the biggest reason to avoid a PPA. Solar usually increases home value by ~4%—but only if you own it.

If you have a PPA, you are selling a house with a lien on it. When a buyer puts an offer on your house, they inherit not just the house, but the 25-year solar contract.

• The Buyer's Perspective: "I want to buy this house, but I don't want to assume a $180/month bill for 15-year-old panels that I don't own."
• The Credit Hit: The buyer has to qualify for the solar lease transfer with their credit score. If their Debt-to-Income (DTI) ratio is tight, the solar lease might disqualify them from the mortgage.
• The Lien (UCC-1): The solar company files a UCC-1 financing statement on your property title. You cannot close escrow until this is resolved.

The Consequence: Homeowners often have to Pay Off the Lease to sell the house.

• "Buyout Price" in Year 10: might be $25,000.
• Result: You lose $25k of equity at closing just to get rid of the "Free Solar."

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Part 4: Who Should Get a PPA?

I have bashed PPAs, but they have a legitimate niche. You should consider a PPA/Lease if:

1. You Have No Tax Liability (Retirees)

The 30% Federal Tax Credit is Non-Refundable. It can only reduce taxes you owe. It cannot give you a check if you pay $0 taxes.

• If you are retired on fixed income with no tax bill, buying solar cash is 30% more expensive for you.
• A PPA allows the company (who has tax appetite) to take the credit and pass some savings to you in a lower rate.

2. You Want Zero Responsibility

If you own the system and the inverter blows up in Year 12 (outside warranty), you pay $2,000. With a PPA, the company owns it. If it breaks, they fix it. If it under-produces, they cut you a check (Production Guarantee).

3. You Can't Get a Loan

If your credit is huge, but you have equity? No. If you have low cash and low credit, sometimes a PPA is the only approval you can get.

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Part 5: The "Prepaid Lease" (The Unicorn)

There is a hybrid option: The Prepaid Lease.

• You pay 100% of the 25-year lease upfront (e.g., $18,000).
• Because it is a "Lease", the Solar Company takes the tax credit (and lowers your price).
• Because it is "Prepaid", there is no monthly bill and no lien.
• Use Case: Perfect for new home builders or people who want the benefits of ownership without the maintenance duties.

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Summary Strategy

Hierarchy of Solar Financing:

1. Cash: Best ROI. Max Savings. Simplest.
2. HELOC (Home Equity Line): Good rates, tax deductible interest.
3. Solar Loan (Unsecured): Good optionality, watch out for Dealer Fees.
4. Prepaid Lease: Niche but good.
5. PPA / Monthly Lease: Last resort. Only do this if you understand the escalator and plan to stay in the home forever.

Golden Rule: Never sign a contract on the first door-knock. Get 3 quotes. Compare the "Cash Price" vs "Financed Price." The difference will shock you.