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: Neither Side Gets It Directly Anymore
The federal Investment Tax Credit (ITC) used to let a homeowner who purchased a system deduct 30% of the installed cost from federal income tax liability. That version of the credit, Section 25D, expired for systems bought after December 31, 2025 under the One Big Beautiful Bill Act. A homeowner who buys a system in 2026, whether with cash, a loan, or PACE, gets no federal credit at all.
On a leased system or PPA, the arrangement is different: the leasing company still owns the panels, and it can still claim a 30% credit under a separate provision, Section 48E, as long as the system is placed in service by December 31, 2027 for a system that begins construction after July 4, 2026. The homeowner never claims that credit directly, but the company factors it into the rate it charges.
The dollar impact of losing Section 25D is significant. A typical 10 kW solar installation in Temecula costs $25,000 to $30,000. On a $27,000 system, a 30% credit would have been worth $8,100 to a purchasing homeowner in 2025. In 2026, that $8,100 is simply gone: nobody claims it on your behalf, and it does not reduce your installed cost.
The leasing companies are not hiding their side of this. They use their own 48E credit to subsidize their cost of capital, which allows them to offer low lease rates. That economic transfer is real and still happening in 2026. From a homeowner's perspective, the practical question is no longer "could I use that credit myself," since a 2026 purchase gets none; it is whether the lease or PPA rate, with the installer's credit already baked in, beats owning the system outright at full price over 25 years.
Because Section 25D is gone regardless of tax situation, a homeowner's federal tax liability no longer changes the purchase-versus-lease math the way it used to. Retirees on Social Security and pension income, and anyone else with limited federal tax liability, are now in the same position as everyone else buying solar outright: no credit either way.
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:
| Factor | Cash Purchase | Solar Loan | Solar Lease/PPA |
|---|---|---|---|
| Upfront cost | $27,000 | $0 - $1,000 | $0 |
| Federal purchase credit | $0 (Section 25D expired) | $0 (Section 25D expired) | $0 direct to you (installer claims 48E) |
| Net cost | $27,000 | $27,000 financed | N/A |
| Monthly payment (yr 1) | None | ~$174/mo (25yr, 5.99%) | ~$120-160/mo |
| Annual escalator | None | None (fixed rate) | 1.5% - 3.9% / year |
| Total 25-yr payments | $27,000 | ~$52,200 | $45,000 - $74,000 |
| System ownership at yr 25 | Yes | Yes | No (installer owns) |
| Can add battery storage | Yes, anytime | Yes, anytime | Requires installer approval |
| Home sale complication | Adds value, no obligation | Adds value, pay off at close | Buyer must qualify and assume |
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 $27,000 loan at 5.99% over 15 years costs approximately $41,000 total (payment of about $228/mo times 180 months). Over 25 years, total cost rises to approximately $52,200 (about $174/mo times 300 months). 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:
You want $0 down with no loan. A cash or loan purchase in 2026 gets no federal credit either way, since Section 25D expired December 31, 2025, so tax liability no longer decides the purchase-versus-lease math the way it once did. What still differs is upfront cost and monthly commitment: a lease or PPA needs no cash and no loan approval. For a homeowner who does not want to finance $27,000 or more, a lease may provide comparable bill savings without that upfront or financed cost.
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 one major advantage over a solar lease: there is no FICO score requirement because the lender's collateral is the property itself, not the borrower's creditworthiness. The homeowner also retains ownership of the solar system, though PACE is still a purchase, so like a cash or loan purchase it does not qualify for a federal credit in 2026: Section 25D expired December 31, 2025.
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 regardless of the tax credit, 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 61 cents per kWh on summer weekdays during the 4pm-9pm on-peak window and 45 cents per kWh in the mid-peak window from October through May (per SCE's rate page, checked October 7, 2026). 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, under Section 48E. On a purchase (cash, loan, or PACE): nobody, since Section 25D expired December 31, 2025. Confirm in writing whether the provider is actually claiming 48E and how that shows up in your rate.
- 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
Who gets the 30% federal solar tax credit on a lease or PPA?
On a solar lease or PPA, the installer or leasing company owns the panels and claims the 30% Investment Tax Credit under Section 48E, passing some of that value through in the rate. The homeowner receives no direct federal credit either way in 2026: a homeowner who purchases a $25,000 solar system also gets zero, because Section 25D, the credit homeowners used to claim, expired for systems bought after December 31, 2025.
How does NEM 3.0 affect the math on a solar lease in California?
NEM 3.0 cut the export rate SCE pays for excess solar from roughly 28-30 cents per kWh to 5-8 cents per kWh. Many older lease projections assumed high export value. Under NEM 3.0, excess production earns very little, so lease savings projections built on old export assumptions are too optimistic. Owners who pair solar with battery storage can self-consume more and avoid the export penalty. Lessees typically cannot add battery storage without installer approval and a contract amendment.
What happens to a solar lease when I sell my home in California?
You have three options: transfer the lease to the buyer (requires the buyer to qualify under the leasing company's credit standards), buy out the remaining lease term before closing (commonly $10,000 to $30,000 midterm), or pay an early termination fee. Lease transfers add two to four weeks to a closing timeline. Some buyers decline to assume a long-term solar obligation, which can slow the sale or reduce your negotiating position.
What is a solar escalator clause and how much can my lease payment increase?
An escalator clause increases your monthly lease payment each year by a fixed percentage, typically 1.5% to 3.9% annually. On a 25-year lease starting at $150 per month with a 2.9% annual escalator, your payment in year 25 reaches approximately $305 per month. Total 25-year payments at that rate: approximately $60,000. Always calculate the total 25-year payment before signing any lease, not just the first-year monthly rate.
When does a solar lease actually make sense in California?
A lease can be the right choice in two situations: (1) You want $0 down and no loan; a cash or loan purchase in 2026 gets no federal credit either way, since Section 25D expired, so this is now a financing-preference decision rather than a tax-credit decision. (2) You cannot qualify for a solar loan and do not have cash. A third case still applies regardless of the credit: you intend to stay in the home for the full lease term and are comfortable never owning the panels. Outside these situations, a solar loan or cash purchase can still deliver better 25-year economics than a lease, depending on the lease's escalator rate.
What is PACE financing for solar and how does it work in California?
PACE (Property Assessed Clean Energy) financing attaches the solar loan to the property. Repayment is collected through your property tax bill. No FICO score requirement. The homeowner retains ownership, but PACE is still a purchase, so it gets no federal tax credit in 2026: Section 25D expired December 31, 2025. The key risk: PACE assessments carry a lien on the property that can complicate refinancing. Interest rates are typically higher than solar loans, ranging from 6.5% to 9.5%. Review the lien position terms carefully before signing any PACE agreement.
The Bottom Line for Temecula Homeowners in 2026
For most homeowners in Temecula and Southwest Riverside County, the financial case for purchasing solar over leasing is still strong, but it no longer rests on a federal tax credit: neither a purchase nor a lease delivers one to you directly in 2026. Ownership instead wins on 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: wanting $0 down with no loan, 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?
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