Solar financing options in California: cash vs loan vs lease vs PPA in 2026

The financing question changed completely on January 1, 2026. For two decades, "cash or loan" was the default answer because ownership meant a 30% federal tax credit. That credit is gone for homeowners — the IRS confirms no Residential Clean Energy Credit for property placed in service after December 31, 2025 — but it's still alive for businesses under Section 48E. That single asymmetry reshuffles the entire ranking of how to pay.

The short version: prepaid lease now beats cash for most Southern California homeowners in SCE and SDG&E territory, cash still wins where municipal utilities pay near-retail for exports, and the monthly lease/PPA escalator trap is more dangerous than ever because there's no tax credit cushioning the comparison. Here's the full breakdown.

Last verified: August 2026 by Helios Energy Global.

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The five options, side by side

	Cash	Solar loan	Monthly lease	PPA	Prepaid lease
Upfront cost	~$24,000 (8 kW)	$0 down typical	$0	$0	~$16,800 (8 kW)
Who owns the system	You, day one	You, day one	Leasing company	PPA provider	Financier years 1–5, then you
Who gets 2026 incentives	No one (25D expired)	No one (25D expired)	Leasing company keeps 48E	Provider keeps 48E	Financier claims 48E, passes ~30% through to you
Payment escalator	None	Fixed payment	Typically 0–2.9%/yr	Typically 0–2.9%/yr	None — one payment, done
Interest cost	$0	Roughly $20,000–$34,000 over 25 yrs at 7–9% APR	Built into payments	Built into rate	$0
Home sale impact	Clean — system conveys	Payoff or transfer of loan	Buyer must assume lease or you buy it out	Buyer must assume PPA or you buy it out	Clean after year 6; simple transfer before
Est. 25-yr net savings (8 kW, SCE, with battery)*	~$48,000	~$22,000–$38,000 (rate-dependent)	~$15,000–$25,000	~$15,000–$25,000	~$55,000

*Estimates assume ~12,400 kWh/yr production, a blended offset value near $0.24/kWh today, and utility rates that keep rising. Your roof and rate plan will move these numbers — treat them as the shape of the comparison, not a quote. Installed-cost benchmarks: see NREL's cost analysis and our solar panel cost guide.

Cash: full ownership, but 2026 took away its subsidy

Paying cash means you own the system day one, pay no interest, and keep every dollar of savings. What changed is the sticker price: in 2025, a $24,000 system netted to $16,800 after the federal credit. In 2026 it nets to $24,000. Same hardware, 43% more out of pocket.

Cash still makes clear sense in two situations. First, municipal utility territory. LADWP, Pasadena, Glendale, Burbank, Anaheim, and Riverside aren't under CPUC jurisdiction, so NEM 3.0 doesn't apply — they still credit exports at or near retail rates. That means strong savings without necessarily needing a battery, and paybacks in the 7–9 year range even at full 2026 pricing. Second, homeowners who value simplicity and zero counterparty risk above the last dollar of return.

One quiet perk that survived: California's Active Solar Energy System property tax exclusion. SB 710, signed in October 2025, protects systems installed before January 1, 2027 from reassessment — solar adds value to your home but not to your tax bill, for as long as you own it.

Solar loans: the hardest sell of 2026

A solar loan used to be "cash economics with no money down" because the tax credit offset most of the interest. Without the credit, the math is bare. Finance $24,000 at 8.5% APR over 25 years and you'll pay roughly $193/month — about $58,000 in total payments for a $24,000 system. Shorter terms cut total interest but push payments above what the system saves you each month in the early years.

Loans aren't dead. If utility rates keep climbing 4–6% a year — SCE peak rates are already ~34–35¢/kWh — a loan-financed system still beats doing nothing over 25 years, and you own the asset. Watch for dealer fees (often 15–30% baked into "low APR" loans) and compare the loan's total cost against a prepaid lease before signing anything. In most head-to-heads we run, the prepaid lease wins in 2026.

Monthly leases and PPAs: read the escalator clause twice

A monthly lease charges a flat fee for the system; a PPA charges per kWh the system produces. Functionally they're siblings: $0 down, a third party owns the hardware, keeps all incentives, and you buy the output. The difference in 2026 is that the third party is monetizing a 48E credit you can't get — and with most lease/PPA products, very little of that value reaches your price.

The real hazard is the escalator — an annual payment increase, commonly 2.9%, compounding for 25 years:

Year	Monthly payment at 2.9% escalator	Flat-payment comparison
1	$180	$180
10	$233	$180
15	$269	$180
20	$310	$180
25	$358	$180
25-yr total	~$77,800	~$54,000

That's roughly $23,800 of extra cost hidden in one sentence of the contract — and if utility rates rise slower than 2.9% in any stretch, your "savings" can go negative in the later years. Escalating agreements also complicate home sales: the buyer must qualify for and assume a contract whose payments are highest exactly when they inherit it. If you're considering a monthly lease or PPA, insist on a 0% escalator and get the year-25 payment in writing.

To be fair: for households with no cash, no appetite for a loan, and a utility bill that's already painful, a well-structured 0%-escalator lease can still deliver modest, real savings. It's just rarely the best available option.

The prepaid lease: 2026's workaround to the lost credit

The prepaid lease exists because Congress killed the residential credit but kept the commercial one. Structure:

1. You make a single upfront payment — roughly 30% below the equivalent cash price (about $16,800 instead of $24,000 for our 8 kW example). No monthly payments, no escalator.
2. The financier — Propel through Concert Finance, or Participate Energy (participate.energy/prepaid-lease) — owns the system for the first 5 years and claims the 48E commercial credit, passing the savings through in your price.
3. Ownership transfers to you as early as the start of year 6 — confirm the exact transfer terms in your contract before signing.

Effectively, it recreates the 2025 after-credit price in 2026. Bonus: unlike the old 25D credit, it doesn't require tax liability, so retirees and low-tax-bill households get full value. The trade-offs are real but bounded — a five-year window where a counterparty owns your roof's hardware, contract terms that demand careful reading (transfer conditions, insurance, what happens if the financier is acquired), and a structure young enough that not every installer offers it. Pair it with SGIP battery rebates — which can stack on the storage portion — and 2026 economics get surprisingly close to the old days. See our batteries page for current pairings.

When cash still wins: munis with real net metering

The prepaid lease's ~30% discount matters most where solar economics are tight — SCE, SDG&E, and PG&E territory under NEM 3.0, where midday exports earn ~3–9¢/kWh and a battery is effectively mandatory for good returns.

In municipal territory, the calculus flips. With near-retail net metering, an 8 kW system in LADWP territory can offset most of a bill without storage. Payback on a cash purchase often lands around 7–9 years even without any credit — and cash means no contract, no counterparty, and no five-year wait for title. If you're in LADWP, Pasadena, Burbank, Glendale, Anaheim, or Riverside and you have the funds, cash remains the cleanest good deal in California solar. Whether solar pencils at all for your situation: Is solar worth it in California in 2026?

How this plays at home-sale time

• Cash / paid-off loan / prepaid lease after year 6: the system is simply part of the house. Studies consistently show owned solar adds resale value, and the property tax exclusion means it never raised your assessments.
• Active loan: you pay it off from proceeds or the buyer assumes it — friction, but manageable.
• Monthly lease / PPA: the buyer must qualify with the leasing company and agree to assume payments, or you pay a buyout that often runs into five figures. This kills or delays real transactions every year; escalator contracts are the worst offenders.
• Prepaid lease, years 1–5: the agreement transfers with the home; because there's nothing left to pay, buyers rarely object. Still, confirm transfer mechanics in the contract before you sign.

FAQ

Is buying solar better than leasing in 2026?

Owning still wins long-term — but "how you get to ownership" changed. In IOU territory, a prepaid lease (which becomes ownership at the start of year 6) usually beats a 2026 cash purchase on net cost. In muni territory, straight cash typically wins. Monthly leases and PPAs finish last for most homeowners.

What's the difference between a solar PPA and a lease?

A lease charges a fixed monthly fee for the equipment; a PPA charges you per kWh the system actually produces. Both leave ownership and incentives with a third party, and both commonly carry escalators. From a homeowner's wallet, they behave nearly identically.

Why does the financier get a tax credit I can't get?

The 2025 law ended the residential credit (25D) but kept the commercial credit (48E) for business-owned systems. A financier that owns your system for five years is a business owner of energy property, claims 48E, and — in a prepaid lease — prices that value into your discount.

Do solar loans still make sense at 7–9% interest?

Sometimes. If you want day-one ownership, can't or don't want to pay upfront, and your utility's rates are high and rising, a loan can still net six figures of avoided utility cost over 25 years. But compare total loan cost against a prepaid lease first — in most 2026 scenarios we model, the prepaid lease comes out ahead.

Get a straight answer for your home

Helios Energy Global (CSLB C-10 license #982201) is a Tesla Certified Installer with 1,000+ Southern California installations since 2018. We'll run cash, loan, and prepaid-lease numbers against your actual utility rates and tell you plainly which one wins — including when the answer is "none of them yet." Schedule a consultation or start with a custom design and savings estimate.