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Cash, loan, or lease/PPA for solar in California?
Updated August 7, 2026 · reflecting 2026 financing options and the expired federal 25D credit · by Cali Energy
Cash, loan, or lease/PPA for solar in California? Cash has the lowest lifetime cost but the highest upfront; a solar loan keeps ownership with little or nothing down but adds interest; a lease or PPA needs no cash and no upkeep but usually costs more over time and can complicate a home sale. Your priority — lowest cost, no upfront, or hands-off — points to the answer.
✓ A plain-English decision aid — a starting point to discuss, not a verdict. See what it weighs ↓
Cash, loan, or lease/PPA — which makes sense for you?
The rates and figures this calculator usestap to verify
This tool has no rates — it weighs four financing paths against your priorities. Here are the paths it compares and the one hard 2026 fact that changed the math.
| Cash | You own it · lowest lifetime cost · highest upfront |
| Solar loan | You own it · little or no upfront · interest + dealer fee |
| Lease / PPA | Provider owns it · no upfront, no upkeep · usually higher lifetime cost |
| Residential Clean Energy Credit (25D) | ended for owner-bought systems after Dec 31, 2025 |
| Lease / PPA | provider may claim a separate business credit; you don’t file |
This is a decision aid, not a financing offer or tax advice. The 2026 tax fact is confirmed against the IRS: the 30% Residential Clean Energy Credit (Section 25D) ended for owner-bought systems placed in service after December 31, 2025, so you no longer file for it on a cash or loan purchase. A lease/PPA provider may still claim a business credit and reflect it in pricing. The recommendation is a simple rules-of-thumb tree, not a financial model — always get the actual cash price and the financed price in writing and compare them.
How the recommendation is decided
The tool asks what matters most to you — lowest lifetime cost, nothing upfront, or the most hands-off experience — plus whether you have cash available and are open to new debt, and how long you plan to stay. It then points to the path that usually fits that combination. It’s deliberately simple: think of the answer as a sensible starting point for a conversation, not a ruling. Two households with the same answers can still land differently once real prices and loan terms are on the table.
How to read your result
You get a “most logical” path and a runner-up, with a short why and situational notes. Where no single option satisfies every goal — for example lowest cost and no cash and no new debt — the tool says so plainly rather than forcing a pick. Treat the runner-up as a real alternative worth pricing, not an afterthought.
What moves the result the most
Your top priority is the biggest lever: optimizing for cost points to cash or a loan; optimizing for no upfront points to a $0-down loan or a lease/PPA; optimizing for hands-off points to a lease/PPA. Your time horizon matters too — staying 10+ years usually rewards ownership because lease escalators compound, while a near-term move makes the clean transfer of a cash system (or a paid-off loan) valuable.
Common questions
What does the tool ask me?
Your main priority (cost, no upfront, or hands-off), whether you have cash on hand, whether you’re open to new debt, and how long you plan to stay in the home.
Is cash always the cheapest?
On lifetime cost, usually yes — no interest, no dealer fee, no escalator. But “cheapest over 25 years” isn’t everyone’s goal; cash flow and risk tolerance matter too.
Is a solar loan worth it?
It keeps ownership with little or nothing down, which suits many buyers — just compare the cash price to the financed price, because a “$0-down” deal often bakes a sizable dealer fee into the price.
Do leases and PPAs add home value?
Generally no — studies find a resale premium for owned systems, not leased ones, and a buyer must usually assume the contract. See our home-value tool.
What happened to the tax credit?
The 30% federal credit ended for owner-bought systems after 2025. A lease/PPA provider may still claim a business credit and price it in, but you don’t file for anything.
What if I sell before the loan or lease is up?
Cash is cleanest to sell; a loan must be paid off or assumed; a lease/PPA must be transferred to the buyer or bought out, which can slow a sale. See selling a house with solar.
Is this financial advice?
No — it’s general information to frame a decision. For numbers, get itemized cash and financed quotes and, if needed, talk to a tax or financial professional.
Sources
- IRS — Residential Clean Energy Credit
- Solar.com — Solar PPA rates and escalators (2026)
- Solar.com — What is a solar lease escalator?
- CPUC — California Solar Consumer Protection Guide
Estimates only, not a quote. Assumptions, rates, incentives and program rules can change — confirm current details with your utility, the program administrator or a licensed professional.
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