The 2026 guide
One federal rule change in 2025 split solar into two very different stories. Here's a clear, source-backed picture for homes, farms, and businesses — with every figure traceable to the IRS, USDA, and EIA.
Last updated 2026-06-26
The headline
For more than a decade, the federal government offered a 30% tax credit that homeowners, businesses, and farms could all tap. In 2026 that single story has split in two. The residential credit (Section 25D) expired for systems installed after December 31, 2025. The commercial credit (Section 48E) that businesses and farms use did not — and, paired with depreciation, it remains one of the most powerful incentives in the tax code.
That distinction matters enormously: the same panels on a house versus a barn or a warehouse now have completely different economics. The sections below lay out what applies to each audience in 2026.
By audience
Homeowners
The federal 30% residential tax credit (Section 25D) ended for systems installed after December 31, 2025. In 2026, home-solar value comes from offsetting your utility bill, net metering, and battery backup — not a federal credit.
The practical takeaway: model home solar on bill savings, net metering, and battery backup — and run the numbers against your state's actual electricity rate before deciding.
Estimate home solarFarms & rural business
Farms and rural businesses use the commercial pathway: the Section 48E credit (≈30%, up to ~50% with domestic-content and energy-community adders) plus first-year bonus depreciation. USDA REAP grants exist but awards are currently paused — treat them as upside, not a guarantee.
REAP grant applications and awards are paused (2026) while USDA rewrites the program rules — no new grants until new regulations take effect. REAP guaranteed loans are still being accepted.
Estimate farm solarBusiness
Businesses use the Section 48E commercial credit (≈30%, up to ~50% with adders) plus first-year bonus depreciation — together typically recovering ~45–55% of project cost. Construction-start timing matters; verify before acting.
Construction-start timing and adder qualification (domestic content, energy community, prevailing wage) can swing the credit materially — confirm before committing.
Estimate commercial solarHow to read any solar estimate
Once you know which federal pathway applies, the biggest lever on payback is your electricity rate— the higher it is, the more each solar kWh is worth. That's why the same system pays back far faster in a 30¢/kWh state than a 10¢/kWh one. See how states stack up in our best states for solar ranking.
The second lever is net metering — how your utility credits the power you export. Full retail-rate net metering is best; many states are shifting to net billing, which credits exports below retail and makes a battery (to use more of your own production) more attractive.
Whatever an estimate shows, treat modeled savings as estimates, not guarantees. Every figure on PanelPerks carries a source and a “last verified” date, and modeled outputs are labeled as estimates, not promises.
Questions
The residential credit (Section 25D) ended for systems installed after December 31, 2025. The commercial credit (Section 48E) that businesses and farms use is still in place in 2026.
No. The 25D residential credit is gone for installs completed after 2025. Home solar can still make sense in 2026 through utility-bill savings, net metering, and battery backup — just not via a federal credit.
The Section 48E commercial credit (≈30%, up to ~50% with domestic-content and energy-community adders) plus first-year bonus depreciation, which together typically recover ~45–55% of project cost.
New REAP grant awards are paused in 2026 pending updated program rules; guaranteed loans are still being accepted. Treat a REAP grant as potential upside, not a guarantee.
More questions? See the full FAQ.
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