Clean Energy Business Grants Open Now — 2026

The 63 open clean-energy grants, by what the money is for

All 63 grants, grouped into five lanes and sorted by deadline inside each. 29 states appear. Loans, tax credits, utility rebates and prize competitions are counted in the numbers and handled in their own sections — none of them is printed here as a grant. Where a program’s own notice contradicts its deadline, the row says so.

Closing in the next 60 days

4 of the 63 open grants carry a published deadline between today and November 30, 2026, soonest first. All four are federal research awards, which tells you plainly where the dated clean-energy money is.

Why this page is organised by purpose, not by size

164 rows in one flat table would be useless. The organising principle here is what the money pays for, because in clean energy that is the thing that decides whether you are eligible — far more than your revenue, your state or your headcount. A solar installer and a battery-materials startup are both “clean energy” and share almost no programs.

There is a sixth lane with nothing in it, and that is the most useful fact on this page. Agricultural and rural on-farm energy — the lane that USDA REAP occupies, and the one that reaches more ordinary rural businesses than every other clean-energy grant combined — has zero open grants in this catalog snapshot. REAP is recorded as paused. We have given it its own section rather than quietly dropping it, because a page that lists 63 grants and does not mention the missing one is telling you less than it appears to.

The lane labels are ours, assigned from each program’s own stated purpose, and they are a judgement call in a handful of cases — a state SBIR match funds research, but the research might be a heat pump. Where a program straddles two lanes we placed it where its eligibility rules bite hardest. The chip in each row tells you which lane we chose; the program’s own page tells you what it actually says.

What still pays for a small business’s solar, efficiency or EV project, and what ended

The pattern is consistent across every project type: federal money attached to equipment that makes or stores electricity survived, while federal money attached to vehicles, chargers and buildings did not. A business choosing between an electric van and a rooftop array will find a federal credit only for the array. For an efficiency retrofit, the federal tax break is gone for new projects, so the utility programme is the whole answer.

1. Sep 30, 2025§45W ends for vehicles acquired after this date.
2. Jun 30, 2026§30C, §45L and §179D (for new construction) end.
3. Jul 4, 2026Last day to begin building wind or solar and stay outside the 2027 cut-off.
4. Oct 16, 2026The new REAP rule takes effect: build first, apply after 12 months.
5. Dec 31, 2027Wind and solar begun after July 4, 2026 must be in service to earn §48E.

See which grants you qualify for →

If you want solar or an efficiency retrofit on your own building

Start with your utility, not with grants.gov. Twelve utility and state efficiency programmes in this slice are open right now and they behave nothing like a grant competition: you book a free assessment, a contractor installs, and the incentive is netted off the invoice. Mass Save covers 70–100% of a small-business lighting or refrigeration project in Massachusetts and finances the rest at 0%. Small Business Energy Advantage in Connecticut pays up to 80% and finances the balance at 0%. Focus on Energy in Wisconsin adds solar at $600/kW for the first 4 kW and $50/kW after that, up to $25,000. None of these requires a proposal, and none of them appears on a “clean energy grants” list, which is precisely why they go unclaimed.

Then finance the gap, if there is one. Commercial Property Assessed Clean Energy financing covers up to 100% of project cost with no money down and is repaid through a property tax assessment over as long as 25 years — Connecticut and Rhode Island both run one, and your municipality has to have opted in. Michigan Saves lends from $5,000, sometimes at 0% through a utility partner.

25 rows — 24 clean-energy-specific programmes among the 101 open non-grants, plus the Section 9003 biorefinery guarantee, which has no current notice and is kept for reference. The remaining 77 are general-purpose loans, state R&D and jobs tax credits, accelerators and pitch competitions that happen to list clean technology as an eligible industry; they are counted in the totals and summarised below rather than listed row by row. Work the full set in the database.

The biggest clean-energy money is a tax credit, and you do not apply for it

The distinction is not pedantry, it changes what you do next. A grant is money you compete for before you spend; a credit reduces tax you owe after you spend, which means it is worth nothing in a year you owe no tax unless the credit is refundable, transferable or direct-pay eligible. Several of the clean-energy credits are — §45X, §45Y and §45Q are transferable, which is why credit-transfer markets exist — but you need a project and a filed return first either way. Our Section 48 and 48E ITC guide works through the rate stack, and the Section 45X guide covers the per-unit manufacturing credit.

One of them is not like the others. §48C is a competitive allocation you do apply for through DOE, and it had no announced new round as of May 2026. If a page tells you to “apply for the 30% clean energy tax credit”, it has confused §48C with §48E. And §179D is a deduction, not a credit — it lowers taxable income rather than tax owed, so its cash value is your marginal rate times the deduction, not the headline per-square-foot figure. Because the 2025 tax law ended it for property whose construction begins after June 30, 2026, do not treat §179D as available for work you start now; only projects already under way can still claim it.

The 48 credits counted in the open 164 are mostly not clean-energy credits at all: six are the federal clean-energy credits in the table above, and the rest are the state R&D credits and state jobs credits that list clean technology among their eligible industries. They are real money for a clean-tech company — the federal R&D credit alone offsets up to $500,000 a year of payroll tax for a qualifying small business — but they fund research and headcount, not kilowatts.

Starting solar after July 4, 2026: the 2027 deadline and what §48E is worth

What counts as having begun construction. IRS Notice 2025-42 makes physical work of a significant nature the only test for most wind and solar projects: on-site work, or off-site work under a binding written contract, followed by a continuous programme of construction. The one exception is a solar facility of 1.5 MW (AC) or less, which may still use the older Five Percent Safe Harbor. Either test had to be met before July 5, 2026. A project that met it is outside the 2027 cut-off; every other wind or solar project faces that cut-off.

Work back from December 31, 2027. The deadline is the date the system is placed in service, not the date a contract is signed. Permits, utility interconnection and equipment lead times all have to fit inside it, so the decision point is an installer contract with a firm in-service date, not the tax return. The 2025 law also added prohibited-foreign-entity rules to §48E; ask the installer to confirm in writing that the modules and inverters comply.

The credit reduces federal tax owed for the year the system goes into service. A business without that much tax can sell (transfer) the credit to another taxpayer, and a tax-exempt organisation can take it as a direct payment. Ask your accountant how the rebate and depreciation interact with the credit before you rely on these figures.

Farms and rural businesses: the REAP hole

What that means in practice. If you run a farm, a grain dryer, a rural workshop or a small food processor and you have been told there is federal grant money for your solar array, the program you were told about is REAP, and it is not currently taking applications in our data. Its historic pattern — quarterly windows, with FY2024 deadlines on March 31 and September 30 — no longer applies: USDA rewrote REAP by a rule effective October 16, 2026, with annual windows and applications through grants.gov (see the rewritten REAP below). We have kept its page live rather than deleting it precisely so that the status is visible: see the REAP page.

Farms face an extra ownership and income test under the rewritten rule; see REAP for farms under the rewritten rule.

What is actually open for a rural business in the meantime is smaller and different in kind. Nebraska Dollar and Energy Saving Loans lend up to $500,000 for efficiency and renewable projects at 5% or less. USDA’s Business & Industry guarantee backs 85% of a commercial loan under $5 million (80% from $5 million up) for a rural business, energy project or otherwise. Nebraska’s Rural Development Act credits pay $3,000 per new employee plus $2,750 per $50,000 invested outside urban centres. Focus on Energy runs an agribusiness track in Wisconsin. None of these is REAP, and pretending otherwise would waste your time.

Two USDA biofuel and biomass vehicles in this slice are also shut: Section 9003 biorefinery assistance publishes competitive notices rather than staying open, with the FY2025 notice status recorded as uncertain, and the Higher Blends Infrastructure Incentive Program has had no active competition since its FY2022 round.

The rewritten REAP: a rural energy grant you apply for after the system is built

The timing window is narrow at both ends. The rule sets the end of the project period at 12 to 24 months before the application. A system finished less than a year before a REAP window is too new to apply; one finished more than two years before it is too old. Applications go through grants.gov, and requests of $20,000 or less compete first for a reserved pool.

How REAP now fits with §48E. Because REAP pays after the fact, it no longer lowers the cash a rural business needs up front. The build is paid for with cash or a loan and offset by the §48E credit and any utility incentive; REAP still guarantees loans, but REAP grant plus guaranteed loan cannot exceed 75% of project cost. Treat the grant as a possible repayment of up to a quarter of the cost a year or two later. A worked timeline: an array placed in service in spring 2027 meets the §48E deadline, is claimed on the 2027 return, and can enter REAP windows from spring 2028 to spring 2029.

Size the system to your bills. Solar and wind systems that cannot document historical energy use to match are not eligible, and projects with components from foreign adversary nations are excluded. The USDA REAP page tracks when USDA posts the first window under the new rule.

What moved, and when — the volatility this slice carries

Federal clean-energy funding has changed more in the last eighteen months than any other slice we track, which makes a stale “open” here unusually expensive. These are the changes recorded in the catalog, each with the date attached, so you can tell a program that is between rounds from one that no longer exists.

• DOE’s Office of Clean Energy Demonstrations was dissolved in November 2025. No new funding notices are anticipated for the demonstrations program; existing awards continue and successor programs are undecided.
• The Industrial Demonstrations Program was effectively cancelled with it. Its $3.7B of Phase 1 awards were terminated following the OCED dissolution, and no Phase 2 notice is expected.
• §30C, the alternative-fuel refuelling credit, was terminated by the OBBBA for property placed in service after June 30, 2026. EV-charger installations completed on or before that date in a qualifying census tract can still be claimed.
• §48E’s wind and solar window was shortened. Wind and solar must be placed in service by December 31, 2027 unless construction began by July 4, 2026. Other clean-electricity technologies keep the later phase-down.
• §179D, the efficient-buildings deduction, was ended by the OBBBA for property whose construction begins after June 30, 2026 — a date now past. Work begun on or before it can still be deducted; new work cannot. (Our catalog record still says “no expiration date” and is queued for correction.)
• §45X wind components must be sold before December 31, 2027; most other eligible components phase down from 2030 through 2032.
• §45Z was extended, not cut. The July 2025 OBBBA pushed the clean fuel production credit from a 2027 sunset out to fuel produced and sold through December 31, 2029, and equalised the sustainable-aviation-fuel rate.
• §48C has announced no new allocation round as of May 2026. Round 2 certificate holders from the 2023–2024 allocations can still claim.
• The DOE ITAC implementation grant is on hold pending a program restart, recorded late 2025 — the one federal grant that paid small manufacturers up to $300,000 to act on an energy audit.
• USDA REAP is paused, with no published next window in our data.
• DOE’s advanced nuclear licensing cost-share closed on September 30, 2026 (DE-FOA-0003339), and no successor notice has been posted.
• DOE STTR Phase I’s FY26 release has closed. A broader Phase I opportunity is expected later this fall, with no date published.
• EPA’s Environmental Justice Collaborative Problem-Solving program is closed, with EPA terminating environmental justice grants since May 2025 and no FY2026 notice issued.
• DOE grid programs are between cycles. GRIP Round 1 was awarded in 2023; the FY2026 SPARK reconductoring round closed with full applications due May 20, 2026.
• CalSEED’s Cohort 8 deadline passed on March 31, 2026 and the next California clean-energy concept call had not opened as of the snapshot.
• DOE’s Title 17 §1703 clean energy loan guarantee is winding down, though pre-application consultation was still recorded as available.

The counterweight: 164 programs in this slice really are open, and the durable ones are the least glamorous — utility efficiency programmes run by regulated utilities on state-approved budgets, state SBIR matching grants funded by state legislatures, and the statutory tax credits. Those three families have moved the least, and they are where a small business should look first.

The numbers behind “clean energy grants open now”

268 of the 736 programs in the catalog touch clean energy; 164 are open as of October 1, 2026 and 63 of those are grants. The other 104 of the 268 are between rounds, paused, closed or discontinued. Median maximum award among the open grants: $150,000.

Two numbers are worth sitting with. First, 53 of the 63 grants are rolling — no deadline at all — which means the urgency in most clean-energy grant content is manufactured; what limits you is appropriation, not the calendar, and several of these close early when a state’s funds run out. Second, 46 of the 63 are state programs against 16 federal. The federal clean-energy grant machine is the part that has been dismantled; the state layer has not moved nearly as much, and it is the layer most businesses have never looked at.

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