United States

Are solar panels worth it?

No payback-period figure is reliably sourced for residential solar. What is sourced: net metering rate differences, degradation, and warranty terms.

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Is there a straightforward answer to whether solar is worth it?

No sourced payback period, break-even year, or lifetime-savings figure exists for this brief, and we're not going to invent one — it depends on your specific electricity rate, system cost, financing, and export compensation, none of which has a single national answer. What we can give you is the sourced pieces that actually determine the answer for your situation.

Solar Panel Answers connects you with licensed local solar companies. We are not a solar contractor.

What determines whether it pays off, if not a fixed number?

The rate you're paid for excess power is one of the biggest, least-understood variables. There is no national rule — export compensation is set state by state and, within a state, utility by utility, through net metering (credited at the full retail rate), net billing (a separate, usually lower, sell rate), or avoided-cost pricing. The same rooftop system can be worth materially different amounts in two neighboring states, or two utilities in the same state, purely because of this policy difference — not the equipment.

What about the federal tax credit — doesn't that make it worth it?

That calculation changed materially in 2025. The 30% federal residential credit was repealed for any expenditure where installation completes after December 31, 2025. Anyone evaluating a system now should not include a present-tense 30% federal credit in their arithmetic. See our tax credit page for the exact rule and the carryforward provisions that still apply to pre-2026 installs.

How much does the equipment actually degrade over its life?

Modestly, and predictably. DOE's empirical estimate is about 0.5% per year; NREL's more conservative modeling assumption is 0.7% per year. The performance warranty standard, per NREL/Sandia/SunSpec research, typically guarantees output at 80% of the original rating after 25 years — a real, contractual figure worth weighing against your own usage horizon.

Sources

4 cited

Export compensation mechanisms: NREL, Energy Compensation Mechanisms for Distributed Generation, last updated 2026-02-20 (checked 2026-08-18).
Federal credit repeal: CRS Insight IN12611, 2025-09-25 (checked 2026-08-18).
Degradation rates: DOE/GO-102021-5627, December 2021; NREL/TP-7A40-92536, January 2025 (checked 2026-08-18).
Performance warranty standard: NREL/TP-7A40-73822, December 2018 (checked 2026-08-18).

How it works

From “is it worth it?” to a number you can check

Start with your power bill

The kilowatt-hours you used over the last year is the number every honest quote is built from. Without it, any price is a guess.

See what the roof can actually make

Pitch, orientation and shade decide how much of that usage a system can realistically cover. This is the step door-to-door pitches skip.

Put the quotes on one basis

Cash, loan and lease are three different products. Compare system size and total price first, then compare the financing separately.

Matched with a licensed local company

The work is done by licensed local solar companies. We do not sell panels and we do not fit them.

How we work

What to expect from this site

Every figure here carries its source and the date it was checked.

Answer first, then the working

Each page opens by answering its own question in a couple of sentences, then shows the arithmetic underneath for anyone who wants to check it.

Ranges, not one confident number

Solar pricing moves with the roof, the state, the utility and the financing. A single national figure fits almost nobody, so we publish the spread our sources support.

We say when the maths does not work

A shaded roof on a low tariff can be a poor buy. That is a legitimate answer to the question and you will find it here rather than a reason to keep reading.

We are not the contractor

We do not sell panels and we do not fit them, so nothing here depends on you signing. Licensed local companies do the work.

Questions

Frequently asked

The questions homeowners actually ask before they sign anything.

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Can you just tell me the payback period?

No sourced national payback figure exists for this brief, and it genuinely varies by your electricity rate, system cost, financing and local export compensation — a number without those specifics attached would be a guess, not a sourced answer.

Does the export rate really matter that much?

Yes — it's described in the sourced research as the single most important variable with no national rule. The same system can be worth materially different amounts depending on whether your state and utility use net metering, net billing, or avoided-cost pricing.

Is solar still worth it without the federal tax credit?

That depends on the same state-level and utility-level factors above, which this brief doesn't have sourced figures to model. What's certain is that the 30% federal credit no longer applies to installations completing after 2025-12-31, so it's not part of the arithmetic for a new system now.

How much value do panels lose to degradation over 25 years?

The performance warranty standard guarantees output at 80% of the original rating after 25 years, based on either a 0.5%/yr (DOE) or 0.7%/yr (NREL) degradation assumption — a real, sourced contractual figure rather than a marketing claim.

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