Most residential solar systems run roughly $15,000–$30,000 before any incentives, depending on system size, your roof, and your region. But the number most homeowners actually care about in 2026 is the monthly one — and with $0-down financing, the goal is a payment lower than your current electric bill, with nothing paid upfront.
What drives the price
| Factor | Effect on cost |
|---|---|
| System size (kW) | Biggest driver — sized to your electricity usage |
| Roof complexity | Steep, multi-plane, or shaded roofs cost more to install |
| Battery storage | Adds cost, but adds backup power during outages |
| Your region & utility | Affects both install cost and the savings side of the equation |
Cash, loan, or $0-down — what changed in 2026
How you pay matters more in 2026 than it used to, because the federal credit now depends on the structure:
- Cash purchase — highest lifetime savings, but the largest upfront cost and no federal credit in 2026.
- Solar loan — own the system with little or nothing down; also no federal credit for owned systems in 2026.
- $0-down lease / PPA — no upfront cost; the provider owns the system, claims the 30% commercial credit, and prices your payment to reflect it. This is the only path that still puts the federal 30% to work for a homeowner in 2026.
How to get your actual number
Online ranges only go so far — your real cost and savings depend on your roof, usage, and local utility. A quick savings check using your ZIP and average bill returns a far more useful estimate than any national average.
Frequently asked questions
How much does solar cost in 2026?
Most residential systems run about $15,000–$30,000 before incentives, driven mainly by system size, roof complexity, whether you add battery storage, and your region. With $0-down financing there's no upfront cost; the figure that matters is a monthly payment aimed to come in below your current electric bill.
Is there really $0-down solar?
Yes. With a lease or PPA you pay nothing upfront — the provider owns and maintains the system and you pay for the power it produces, ideally at a lower, more predictable rate than your utility. In 2026 this structure also captures the 30% federal credit, which the system owner claims and reflects in your payment.
Is it cheaper to buy or lease solar in 2026?
Buying with cash usually gives the most lifetime savings if you can cover the upfront cost — but owned systems get no federal credit in 2026. A $0-down lease or PPA has no upfront cost and still captures the 30% federal value through the owner, so it often wins on monthly cash flow. The best choice depends on your goals and tax situation.
Does adding a battery change the cost a lot?
A battery adds to the system price, but it buys you backup power when the grid goes down and can improve savings under some utility rate structures. Whether it's worth it depends on how outage-prone your area is and your utility's rates.
This page is general information, not tax or legal advice. Federal and state solar incentives change and depend on your situation — confirm details with a licensed tax professional and your installer before deciding. Last reviewed: June 2026.