Solar Lease vs Buying Solar Panels in California 2026: The Complete Cost Comparison

How Solar Leases and PPAs Work

A solar lease and a power purchase agreement (PPA) are two versions of the same fundamental arrangement: a third-party company owns the solar panels on your roof and sells you the benefits. In a lease, you pay a fixed monthly amount for the right to use the system. In a PPA, you pay a per-kilowatt-hour rate for every unit of electricity the panels produce, rather than a fixed monthly fee.

Both structures came to California in the mid-2000s as a way to put solar on homes where the owners either lacked the cash to buy a system or could not use the federal tax credit. Sunrun, SunPower, and SolarCity (now Tesla Energy) built substantial businesses around them. By offering zero-money-down solar with instant bill savings, they expanded the market dramatically.

The appeal is straightforward: sign the agreement, the installer puts panels on your roof at no upfront cost, and your electricity bill drops immediately. The catch, which the industry does not always surface clearly, involves four issues that compound over a 20-25 year agreement: who claims the tax credit, how the payment escalates over time, what happens to the contract when you sell your home, and how NEM 3.0 changed the savings calculus the original projections were built around.

Who Gets the 30% Federal Tax Credit: The Single Biggest Financial Difference

The federal Investment Tax Credit (ITC) allows solar system owners to deduct 30% of the total installed cost from their federal income tax liability. In 2026, the ITC remains at 30% for residential systems and is scheduled to remain there through 2032 before stepping down.

On a purchased system, the homeowner is the owner and claims the credit. On a leased system or PPA, the leasing company owns the panels and claims the credit itself. The homeowner receives none of it.

The dollar impact is significant. A typical 10 kW solar installation in Temecula costs $25,000 to $30,000 before incentives. The 30% ITC on a $27,000 system equals $8,100. That $8,100 is money the homeowner who purchases collects at tax filing time, and the homeowner who leases leaves on the table entirely.

The leasing companies are not hiding this benefit. They use the credit to subsidize their own cost of capital, which allows them to offer low lease rates. The economic transfer is real. But from a homeowner's perspective, the question is: could you use that $8,100 credit yourself? If you have significant federal tax liability, the answer is almost certainly yes, and purchasing almost always makes more financial sense than leasing.

The exception is a homeowner with little or no federal tax liability. Retirees on Social Security and pension income, households with significant credits already applied, or business owners with complex tax situations may not be able to use the full ITC anyway. In those situations, the tax credit argument for ownership weakens considerably.

NEM 3.0 and What It Does to Lease vs Ownership Math

California's Net Energy Metering 3.0 program, which took effect for new solar customers in April 2023, fundamentally changed the economics of solar for all new installations. The core change: the export rate SCE pays for excess solar dropped from approximately 28-30 cents per kWh under NEM 2.0 to roughly 5-8 cents per kWh under NEM 3.0's Avoided Cost Calculator rate.

Under NEM 2.0, a homeowner could install a system sized to overproduce and effectively bank energy credits at retail rates. The grid worked like a free battery. Under NEM 3.0, overproducing and exporting the surplus earns very little. The financially optimal strategy shifted toward self-consumption: use every kilowatt-hour your panels produce at home rather than sending it to the grid.

This shift affects leases and ownership differently in a critical way: battery storage.

Under NEM 3.0, adding a battery to a solar system allows the homeowner to store midday overproduction and use it during evening peak hours instead of exporting at 5-8 cents and importing at 28-47 cents. For homeowners on SCE's TOU-D-PRIME rate, the value of stored versus exported electricity is approximately 5-6 times greater. Battery storage is now an important part of the NEM 3.0 financial case.

Homeowners who purchase their solar system can add battery storage at any time, choosing their own hardware and installer. Homeowners on a solar lease typically cannot modify the installed system without the leasing company's permission and a contract amendment. Some lease agreements explicitly prohibit system modifications. Adding storage to a leased system is often impractical, which leaves NEM 3.0 lessees with limited options to optimize their bill savings under the new export rate structure.

The 25-Year Cost Comparison: Lease vs Loan vs Cash

The fair way to compare financing options is over the full term of the agreement. Here is a realistic comparison for a $27,000 solar installation in Temecula for an SCE customer in 2026:

The lease payment range in the table above is wide for a reason. A lease with a 1.5% annual escalator starting at $140 per month totals approximately $47,000 over 25 years. The same starting payment with a 3.9% escalator totals approximately $74,000. Many homeowners focus on the first-year monthly payment without calculating what the escalator does to their total commitment over the full term.

The solar loan comparison uses a 25-year term at approximately 5.99% interest. Shorter loan terms (12-15 years) produce significantly lower total interest paid. A $18,900 loan at 5.99% over 15 years costs approximately $29,300 total. Over 25 years, total cost rises to approximately $40,500. The loan rate available to you depends on your credit profile.

Escalator Clauses: The Detail That Changes the Total Cost Dramatically

Most solar leases include an annual escalator, sometimes called an annual rate increase or a periodic adjustment. The escalator is typically expressed as a percentage and applied to the monthly payment each year.

Common escalator rates in California leases range from 1.5% to 3.9% annually. Some leases offered by major companies have historically used escalators at the high end of that range. The justification from installers is that the escalator tracks expected utility rate increases, so your savings will grow proportionally. This claim has some historical basis, but utility rates do not increase on a smooth schedule, and the past performance of rate increases does not guarantee the escalator rate you signed in 2026 will track future SCE increases accurately.

Here is the math on a lease starting at $150 per month:

• Year 1: $150/month
• Year 5 at 2.9% escalator: $173/month
• Year 10 at 2.9% escalator: $199/month
• Year 15 at 2.9% escalator: $230/month
• Year 20 at 2.9% escalator: $265/month
• Year 25 at 2.9% escalator: $305/month

Total payments at this escalator rate: approximately $60,000 over 25 years. The system you effectively rented over that period cost a significant amount more than a purchased system, without ever delivering the asset at the end of the term.

Before signing any lease, calculate the total 25-year payment using the starting payment and the escalator rate. This single calculation is the most important thing you can do before agreeing to any lease or PPA.

Selling Your Home with a Solar Lease: What the Transfer Process Actually Looks Like

When a homeowner with a purchased solar system sells the home, the process is straightforward. The system adds appraised value to the property and transfers with the sale. Most buyers view owned solar positively. The transaction is clean.

When a homeowner with a leased solar system sells, the situation is more complicated. Sellers have three options:

Option 1: Lease transfer to the buyer. The buyer assumes the remaining lease obligation. The leasing company must approve the transfer, and the buyer must meet the company's credit requirements. If the buyer does not qualify or declines to assume the lease, the deal is at risk. Buyers unfamiliar with solar lease obligations sometimes treat an assumption as a red flag, and some real estate agents advise clients to avoid homes with long-term lease obligations. Transfers can add two to four weeks to a closing timeline.

Option 2: Buy out the lease before closing. The seller pays the leasing company the present value of remaining lease payments to terminate the agreement and gain ownership of the system. Buyout costs depend on the remaining term, the original lease rate, and the leasing company's buyout formula. In the middle of a 25-year lease, buyout amounts commonly range from $10,000 to $30,000. After the buyout, the seller owns the system and can transfer it with the home.

Option 3: Pay the early termination fee. Some leases allow early termination with a penalty fee. This option is typically the most expensive and is not always available under every lease structure.

The lease complication at sale is real. In Temecula's active real estate market, where homes can sell quickly and with multiple competing offers, having a lease disclosure obligation and a buyer qualification step can cost time and negotiating position. It does not make a home unsellable, but it is a documented friction point worth factoring in before signing a 20-25 year agreement.

When a Solar Lease Actually Makes Sense

Despite the disadvantages relative to ownership, there are three situations where a solar lease is the right choice rather than just the easiest one to get a sales team to close:

No federal tax liability. The 30% ITC is a nonrefundable credit, meaning it can only reduce your federal income tax liability to zero. It cannot generate a refund beyond your liability. Retirees whose income comes primarily from Social Security and investment accounts may have little or no federal tax liability after standard deductions. In that case, a cash purchase does not actually deliver the $8,100 credit. A lease may provide similar or better savings on the bill side without requiring the homeowner to absorb a cost they cannot tax-offset.

Cannot qualify for a solar loan. Solar loans typically require a credit score of 650 or higher, and the better rates require 700 or above. Homeowners below those thresholds who do not want to pay cash may find that a lease is the only available path to solar savings. Cash is not available to everyone, and if the lease rate produces a genuine net positive on monthly bills, it can still be a rational choice even if it is not the optimal one financially.

Definite long-term residency, no modification plans. A homeowner who expects to stay in the property for the full lease term, does not plan to sell, and is comfortable never owning the panels can capture most of the electricity savings benefit without the complexity of purchase. The math is still worse over 25 years, but the simplicity argument is real for the right homeowner in the right situation.

Outside those three situations, a solar loan almost always produces better long-term economics than a lease in 2026 California.

PACE Financing: The Alternative That Skips the Credit Check

Property Assessed Clean Energy (PACE) financing is a California-specific option that solves the credit qualification problem differently from a lease. Rather than underwriting the loan against the borrower's credit profile, PACE attaches the obligation to the property. Repayment is collected through the property tax bill in semi-annual installments alongside regular property taxes.

PACE has two major advantages over a solar lease. First, the homeowner retains ownership of the solar system and can claim the 30% federal ITC. Second, there is no FICO score requirement because the lender's collateral is the property itself, not the borrower's creditworthiness.

The critical risk: PACE assessments hold a lien on the property. In California, PACE liens are typically senior to the mortgage for the assessment amount due in the current tax year (though California law has evolved on this point and specifics vary by PACE program). This senior lien position can complicate refinancing. When a homeowner tries to refinance their mortgage, the lender sees the PACE assessment as a senior obligation and may require payoff before refinancing proceeds. Review the lien position terms of any PACE agreement with an independent attorney before signing.

PACE interest rates are typically higher than solar loan rates, often 6.5% to 9.5%. The longer repayment terms (up to 25 years) keep monthly payments lower but increase total interest paid significantly. PACE works best for homeowners who need the credit-score flexibility, want to retain ownership for the ITC benefit, and plan to hold the property through the repayment period.

Temecula Homeowner Considerations with SCE Rates

Southern California Edison serves Temecula, Murrieta, Menifee, and most of SW Riverside County. SCE's rate structure matters significantly for how you evaluate any solar financing option.

SCE's TOU-D-PRIME rate schedule charges 34.5 cents per kWh during the 4pm-9pm on-peak window and up to 47-55 cents during summer peak hours. These high peak rates make solar-plus-storage particularly valuable for owners who can add battery storage. Temecula summers average high temperatures in the mid-90s, and air conditioning load peaks exactly when peak electricity pricing applies. A battery system that stores midday solar and discharges during the 4pm-9pm window has strong economics in this climate.

For homeowners evaluating leases, ask the sales representative specifically which SCE rate schedule the lease payment projections were modeled on. Some older lease proposals assumed NEM 2.0 export rates or lower peak-hour rates. Run the savings projection yourself using your actual 12-month SCE bill data and the current NEM 3.0 Avoided Cost Calculator rate for exports.

Temecula homes tend to be larger than California coastal averages. A 3,000 to 4,500 square foot home in a Temecula master-planned community can use 1,200 to 2,000 kWh per month during summer. At that consumption level, a properly sized 10-15 kW solar system has strong payback whether purchased with cash or financed with a loan. The raw consumption volume makes the per-kWh savings from ownership versus leasing larger in dollar terms than it would be for a smaller home with lower usage.

Questions to Ask Before Signing Any Solar Agreement

Whether you are considering a lease, PPA, loan, or PACE agreement, these questions protect you before committing to a 20-25 year financial obligation:

• What is the annual escalator rate in this lease, and what are my total payments over the full 25-year term? Calculate this yourself using the formula: monthly payment multiplied by 12, then compounded at the escalator rate over 25 years. Do not accept a verbal summary.
• Who claims the 30% federal Investment Tax Credit? On a lease or PPA: the installer. On a purchase (cash, loan, or PACE): you. Confirm this in writing.
• What does the savings projection assume for the export rate? Any projection that uses the old NEM 2.0 rate of 28-30 cents for exports is significantly overstating savings for a new 2026 installation. Ask for projections using the current NEM 3.0 Avoided Cost Calculator rate, which averages 5-8 cents.
• Can I add battery storage to this system? For a lease: ask whether the contract permits modifications and how that process works. For a purchase: confirm the inverter is battery-ready and what the cost of adding storage would be.
• What happens to this agreement if I sell my home in the next 5-10 years? For a lease: ask the company to walk you through the buyer qualification process, the typical transfer timeline, and the buyout amount at year 5 and year 10.
• What rate schedule does the bill savings projection assume? Ask which SCE rate plan the projections were modeled on, then verify whether that rate plan applies to your home address and usage pattern.
• What warranty covers the panels, and what happens if the installer company is sold or goes out of business? For leases, the leasing company is responsible for maintenance and repairs. Understand who takes over those obligations if the company changes ownership or ceases operations.
• Is this financing agreement a loan, lease, PPA, or PACE assessment? Each has different legal and tax implications. Confirm the product type in writing and understand what lien, if any, it places on your property.

Frequently Asked Questions

The Bottom Line for Temecula Homeowners in 2026

For the majority of homeowners in Temecula and Southwest Riverside County with meaningful federal tax liability, the financial case for purchasing solar over leasing is strong and well-established. Ownership captures the 30% ITC, delivers lower total 25-year cost in most scenarios, preserves the ability to add battery storage for NEM 3.0 optimization, and simplifies home sale.

Leases make sense for the specific homeowner profile described above: limited tax liability, credit barriers to loan qualification, or definite long-term residency. For anyone else, the right next step is to get at least two purchase proposals and compare the 25-year economics against whatever lease offers you have received.

The questions to answer before signing anything: What is the total 25-year cost? Who claims the federal tax credit? What export rate assumptions underlie the savings projection? And what happens to this agreement when you sell the house?