Guide

Are solar panels worth it in the first year without the credit?

The honest 2026 arithmetic: production from NREL's own model, your real electricity rate, and the federal credit at zero. Sometimes yes, sometimes clearly not.

Updated September 18, 20262 min readAwaiting expert review

Sunlight raking across a dark solar panel surface at a shallow angle so the cell grid reads as texture.

Written from primary sources by our editorial team. A credentialed reviewer hasn't signed off yet, so this page isn't in search results. It's information, not professional advice.

Not sure where to start? Take the Solar Check.About 2 minutes. Rough answers are fine.

The honest answer is that it depends, and every input you need is public. Four things decide it: how much sun your roof gets, what you pay per kilowatt-hour, what your utility credits exported power at, and what the system costs. The federal credit is no longer one of them.

Start with production, from a neutral source

NREL's PVWatts is a national-laboratory model that estimates annual output for a specific location, roof orientation, pitch and shading. It is free, it takes two minutes, and it is what our payback tool uses through the PVWatts v8 API.

Run it yourself. Then compare the number with whatever an installer's proposal claims. If their figure is materially higher, ask what shading loss they assumed.

Then the money

Annual production times your rate gives the first-year bill offset — roughly, because what you export is credited differently from what you use on site. Net cost divided by that offset gives a simple payback in years.

The number people get wrong is escalation: how fast they assume electricity prices rise. It compounds over twenty-five years, so a generous assumption can turn a mediocre investment into a good-looking one on paper. Try it at 2% and at 4%; if the decision flips, it was never solid.

When the answer is no

Heavy shade, a north-facing roof with no alternative plane, a very low electricity rate, or a plan to move in three years. Any of those can make the arithmetic fail, and no amount of financing structure fixes it. If your roof is the problem rather than the economics, community solar is the option worth knowing about.

Bottom line

Run PVWatts, use your own rate, set the credit to zero, and be willing to accept a negative answer. The cost side is in what solar costs to install.

Common questions

Is solar still worth it without the federal credit?

Sometimes. It depends on your sunlight, your roof orientation and shading, what you pay per kilowatt-hour, and what your utility credits exported power at. All four are knowable before you talk to anyone.

Where do I get an honest production figure?

NREL's PVWatts model is free, public and is what our tool uses. Run your own address through it and compare the answer with any installer's figure.

What escalation rate should I assume?

Around 2.5% a year for residential electricity is defensible. Anything near 5% is a sales input, and because it compounds over 25 years it can make a poor payback look good.

What does this calculation leave out?

Panel degradation of roughly half a percent a year, an inverter replacement somewhere around year 12 to 15, and what your utility actually pays for exports.

Sources

By SolarRealCost Editorial Team. First published September 18, 2026. Advertiser disclosure

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