In November 2025, a family in the Texas Hill Country signed a contract for a $52,000 solar-and-battery system to power a house sitting six-tenths of a mile from the nearest utility pole. Their installer quoted the job at 30% off, credit included — the number every off-grid buyer had budgeted around for a decade. A supply delay pushed final commissioning into January 2026. When the installer filed the paperwork, the credit wasn’t reduced. It was zero. Six weeks turned a $15,600 line item into nothing, and the contract date didn’t matter at all.
That story is playing out on kitchen tables right now, and most of what’s been written about “the solar tax credit is dead” is aimed at the wrong reader — a homeowner comparing a new grid-tied bill to an old one. That was never the off-grid calculation, and the credit that just disappeared wasn’t really a panel subsidy for this audience. It was a battery subsidy, and it’s the single biggest dollar figure missing from a real off-grid budget in 2026. Here’s the accurate picture: what ended, what’s still on the table, and how far the real math moved.
What Ended, and the Date That Actually Matters
The mechanism is the One Big Beautiful Bill Act (Public Law 119-21), signed July 4, 2025. The piece that hits off-grid buyers hardest is Section 25D, the federal Residential Clean Energy Credit — the 30% credit — which is repealed for any system where installation is completed after December 31, 2025. Not phased down over a few years the way the 2022 law originally scheduled it (30% through 2032, stepping to 26% then 22% before expiring in 2035). Ended outright, seven years ahead of that schedule, in one bill.
The date that actually trips people up isn’t the contract date, the deposit date, or the date the equipment showed up on a pallet. Under the statute (26 U.S.C. §25D(e)(8)), an expenditure counts as made when original installation is completed — meaning a system fully paid for and under contract in October 2025 gets zero federal credit if the crew doesn’t finish commissioning until January. There’s no grace period written in for a weather delay or a backordered inverter. If an installer is still promising “the 30% credit” on a 2026 completion, ask them to point to the code section — for a straight cash-or-loan purchase of a residential system, there isn’t one anymore.
One narrow exception: if installation was completed before the end of 2025 and the full 30% wasn’t needed to zero out that year’s tax bill, the unused balance carries forward to future returns. That’s the only way Section 25D still touches a 2026-or-later filing. For anyone finishing a system now, it isn’t available at all.
The Part Most Coverage Misses: It Was a Battery Credit
Panels get the headline photo. For a genuinely off-grid system, they were never the expensive part. In a typical build, the battery bank runs 35–40% of total installed cost — more than the panels, racking and inverter combined — and Section 25D applied to it in full. Since 2023, standalone battery storage of 3kWh or more qualified for the same 30% credit as the solar array, whether it went in alongside new panels or was added later to a system already owned.
Run that against real numbers. On a $52,000 solar-and-battery system carrying a 25kWh LiFePO4 bank priced around $18,000–$20,000 installed, the battery alone was worth a $5,400–$6,000 credit — before the panels or inverter added a cent more. That’s the figure that quietly vanished for most off-grid buyers, and dollar for dollar it’s bigger than what a comparable grid-tied rooftop system lost, because a grid-tied battery is usually optional. For off-grid, it never was.
| Installation completed by Dec 31, 2025 | Installation completed 2026 or later | |
|---|---|---|
| Federal credit rate | 30% of full system cost | 0% — no residential credit exists |
| Covers the battery bank | Yes, 3kWh+ standalone storage | Same repeal, same date |
| Unused credit | Carries forward to future years | Nothing to carry forward |
| On a $52,000 system | $15,600 credit — net $36,400 | $52,000, full stop |
How Much the Payback Math Actually Moved
We ran a full worked payback example in a separate piece on this site — a 9kW array, 25kWh bank, $52,000 installed, sited 0.6 miles from the nearest pole with a $38,000 utility extension quote on the table. It’s worth revisiting with the old credit dropped back in, because the gap between the two versions is the actual size of what changed.
With the credit still live, that system’s net cost was $36,400 — already $1,600 cheaper than the utility’s own extension quote, before counting a single year of avoided electric bills. Off-grid won on day one, in cash, no crossover year required.
Key number
$15,600
What the federal credit would have been worth on that exact system — a discount that made off-grid cheaper than the grid-extension quote immediately. It’s gone in 2026, and it isn’t coming back for a residential cash or loan purchase.
Without the credit, the same site, same system, same $38,000 extension quote now runs a $14,000 gap instead of an immediate win — and closing it takes roughly nine years of avoided electric bills instead of zero. That’s the real shift: not whether off-grid still beats the alternative — for anyone more than a few tenths of a mile from a pole, it usually still does — but how long it takes to prove it on paper. Nine years is a real number to plan a budget around. It is a very different number from zero.
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What's Actually Left in 2026
The residential credit is gone. It was never the only mechanism that touches an off-grid system’s cost — it was just the only one that applied automatically to a private homeowner buying with cash or a loan. Everything still standing requires either a business structure or a state-level program with its own rules.
The Business Pathway: Section 48E
Commercial solar still carries a 30% investment tax credit under Section 48E, and it survived the same bill mostly intact — with two new deadlines that didn’t exist before. A solar project has to begin construction by July 4, 2026 to lock in the full 30% and gets until 2030 to go into service. Miss that start date and the rule flips: the system must be fully placed in service by December 31, 2027, or the credit drops to zero. No partial credit, no third option.
A new sourcing rule phases in alongside it. Starting with projects that begin construction in 2026, a rising share of a project’s manufactured-product costs has to come from outside a list of restricted foreign suppliers — the “FEOC,” or Foreign Entity of Concern, rule — to keep the credit intact, and the compliance bar tightens again in 2027. A suspiciously cheap, import-heavy panel-and-battery package can fail this test even when the construction-start deadline is met, so ask any installer quoting a 48E-eligible project for their FEOC sourcing documentation before signing, not after.
The catch for most off-grid buyers: 48E belongs to whoever owns the system as business property, not the homeowner living in the house. That’s straightforward when a third-party developer owns the array under a lease or PPA and passes savings through as a lower monthly payment — but most lease and PPA products are built around a utility meter, and true off-grid has none. Ask explicitly whether a lender or developer offers a genuinely off-grid lease; a few do, but it isn’t the default product. It fits more naturally when the property itself is a working farm, ranch, or registered rural small business — which opens a second program most homeowner-focused coverage never mentions.
USDA REAP: The Route Most Off-Grid Buyers Never Check
The Rural Energy for America Program (REAP) is a USDA grant, not a tax credit, for agricultural producers and rural small businesses — and it never ran through Section 25D, so the same bill that repealed the residential credit didn’t touch it. A working ranch, a farm running its own well pump and cold storage off-grid, or a legitimate agritourism cabin business are classic qualifiers, and a REAP grant can stack with a separate loan guarantee on top. Award levels shift with each federal funding cycle rather than sitting at one fixed percentage, so get the current cap from your regional USDA Rural Development office before it goes into a budget — but for anyone whose off-grid property doubles as a working farm or rural business, this is very often a bigger check than the old residential credit ever was.
State and Local Programs: Untouched, and Worth a Real Look
State solar incentives run on separate legal authority from the federal tax code, and the bill that ended Section 25D didn’t reach any of them. What’s live varies by state and shifts with every legislative session, but the categories worth checking are consistent: a state income tax credit (New York, for one, has run a 25%-of-cost credit capped at $5,000 for years, entirely independent of federal law), a sales-tax exemption on solar and battery equipment, and a property-tax exemption so a system that can add tens of thousands of dollars in value doesn’t trigger a reassessment. All three apply to a true off-grid system exactly as they would to a grid-tied one, since none of them care whether the property has a utility meter. Net metering, by contrast, is genuinely irrelevant if you’re fully off-grid — there’s no interconnection to meter. Confirm your specific state’s current programs before counting on a number; this is exactly the kind of list that goes stale within a year.
Hardware and installer pricing keeps moving regardless of the tax code. Here’s what’s actually available in the US right now:
- Whether any federal credit applies to your specific purchase structure — and which code section, in writing.
- Your realistic commissioning date, not just the contract or deposit date — it’s the only date the IRS counts.
- Whether your state still runs an income tax credit, sales-tax exemption or property-tax exemption for solar and battery equipment.
- Whether your property could qualify as agricultural or rural small-business use under USDA REAP.
- Full FEOC sourcing documentation, if a 48E business credit is any part of the pitch.
Is there still a federal tax credit for a home off-grid solar system in 2026?
Not for a direct cash-or-loan purchase. Section 25D, the 30% Residential Clean Energy Credit, ended for any system where installation was completed after December 31, 2025. The only federal credit still standing, Section 48E, belongs to whoever owns the system as business property — a third-party lease or PPA developer, or a qualifying farm or rural business — not a homeowner buying outright.
I signed my contract in 2025. Do I still qualify if the installer finishes the job in 2026?
No. The statute triggers on the date installation is completed, not the contract date, the deposit date or the order date. A system commissioned in January 2026 gets zero federal credit even if it was fully contracted and paid for months earlier — this is the single most common misunderstanding buyers have right now.
Does the expired credit include batteries, or just solar panels?
Both, and that’s the part most coverage misses. Standalone battery storage of 3kWh or more qualified for the same 30% credit as the panels starting in 2023, whether installed alongside new solar or added later to an existing system. For a typical off-grid build, where the battery bank often costs more than the panels, that was frequently the larger half of the credit.
Are state solar incentives affected by the federal repeal?
No. State income tax credits, sales-tax exemptions and property-tax exemptions run on separate state legal authority and weren’t touched by the federal bill that ended Section 25D. What’s currently available varies by state and changes with each legislative session, so confirm directly with your state energy office rather than relying on last year’s list.
None of this changes whether going off-grid makes sense for a property that’s genuinely far from a pole — it changes the number to budget against. Get a real 2026 figure for your actual site before signing anything built around a discount that no longer applies.