How the One Big Beautiful Bill Killed Energy Tax Credits
For most of 2025, homeowners planning efficiency upgrades had access to two generous federal tax credits: the Section 25C credit for equipment like heat pumps and insulation, and the Section 25D credit for solar panels and battery storage. Both had been extended and expanded by the Inflation Reduction Act of 2022. Both were generating real demand — installers reported record backlogs, and IRS data showed tens of billions in credit claims annually.
Then Congress passed the One Big Beautiful Bill, and after December 31, 2025, neither credit exists anymore.
This isn't a sunset provision or a phase-down. The OBBB didn't reduce the credits or create an income threshold. It eliminated them outright — effective for tax years starting January 1, 2026. If you completed qualifying work before that date, you can still claim the credit on your 2025 return. If you were planning a project for 2026 based on those credits, that plan needs to be rebuilt from scratch.
What the OBBB Actually Says
The One Big Beautiful Bill is a sprawling piece of legislation primarily organized around spending cuts and tax restructuring. The energy credit provisions weren't the headline — they were buried in the revenue offset section, which is where Congress identified savings to help score the overall bill. Eliminating 25C and 25D was estimated to recover several hundred billion dollars in projected tax expenditures over the budget window.
The specific language repealed the IRA's extension of 25C (formally the "Nonbusiness Energy Property Credit") and 25D (the "Residential Clean Energy Credit") for tax years after 2025. The IRA had set both credits to run through 2032 with a phase-down structure after that. The OBBB accelerated that termination by six years.
There was no grandfather clause for projects underway. No transition period. If your solar installation closed permits in January 2026, you get zero from 25D — even if you signed the contract and paid a deposit in November 2025.
What Each Credit Covered — And What It Was Worth
Before the repeal, 25C offered a 30% tax credit capped at $1,200 per year for insulation, exterior windows and doors, and home energy audits. Heat pumps and heat pump water heaters qualified for a separate $2,000 annual cap within 25C. This was a real dollar-for-dollar reduction in federal income taxes owed — not a deduction.
Section 25D was even more valuable for solar households. It covered 30% of the total cost of a qualifying solar panel system, residential battery storage, geothermal heat pumps, and small wind turbines, with no annual cap. A $30,000 solar installation generated a $9,000 federal tax credit. The credit was also carryforward-eligible — if your tax liability wasn't large enough to absorb the full credit in one year, you could carry the remainder to future tax years.
| Credit | What It Covered | Maximum Value | Status After OBBB |
|---|---|---|---|
| 25C (Nonbusiness Energy Property) | Heat pumps, insulation, windows, doors, audits | $2,000/yr (heat pumps) + $1,200/yr (other) | Terminated after Dec 31, 2025 |
| 25D (Residential Clean Energy) | Solar panels, battery storage, geothermal, small wind | 30% of costs, no cap | Terminated after Dec 31, 2025 |
| HOMES Rebate | Whole-home energy savings (performance-based) | $4,000–$8,000 depending on savings and income | Still active — funded through IRA appropriation |
| HEAR Rebate | Specific equipment: heat pumps, water heaters, panels | Up to $14,000 total | Still active — funded through IRA appropriation |
The Timeline: How This Happened
The OBBB moved through Congress faster than most major legislation. Here's the sequence that matters for homeowners:
Early 2025: The OBBB was introduced as a broad fiscal package. Energy tax credit repeal was included from the first draft, but received limited media coverage compared to the spending provisions.
Mid-2025: Industry groups — solar installers, HVAC manufacturers, efficiency advocacy organizations — lobbied against the repeal provisions. Some economists published analyses estimating that the credits had driven significant private investment and that removing them would create market contraction.
Late 2025: Congress passed the OBBB. The energy credit repeal survived the final version. The effective date was set as January 1, 2026 — giving homeowners essentially no runway between the bill's passage and the termination date.
December 2025: Installation backlogs surged as homeowners scrambled to complete projects before year-end. Some installers reported completing work without full inspections just to meet the deadline, which created warranty and permit issues in some jurisdictions.
January 1, 2026: 25C and 25D terminated. Work completed on or after this date does not qualify for federal tax credits under these sections.
Who Got Caught Off Guard
The homeowners most affected were those who had started the planning process in mid-to-late 2025 but hadn't yet signed contracts or scheduled installation. Solar projects have particularly long lead times — permits, utility interconnection agreements, and equipment delivery can take 3–6 months. A homeowner who started the process in August 2025 expecting to capture the 25D credit might not have completed installation until February 2026, missing the cutoff entirely.
Homeowners who installed solar in 2025 and were planning to carry forward unused 25D credits to offset 2026 tax liability have also been affected. The carryforward provision terminated along with the credit itself — any amount you haven't yet applied is gone.
If you completed qualifying work before December 31, 2025, you can still claim the credit on your 2025 federal return. The energy tax credits 2025 guide covers the specific form and documentation process. April 15, 2026 is the filing deadline, and this is one case where not filing or filing incorrectly costs you real money.
The Political Context
The repeal of 25C and 25D fits within a broader pattern of legislative rollback of IRA energy provisions. The OBBB also included restrictions on electric vehicle credits and targeted modifications to clean energy tax credits for commercial entities. The framing from proponents of the repeal was that the credits represented unjustified subsidies that distorted market decisions and disproportionately benefited higher-income households who could afford the qualifying equipment.
Critics pointed out that the credits had been specifically structured by the IRA to reach middle-income households — the $2,000 annual cap on 25C was set precisely because it was designed to be accessible to households that might install one or two upgrades per year rather than a comprehensive renovation. The 25D credit, while not income-capped, had been generating significant solar adoption in moderate-income markets.
Whether the repeal was good policy is a separate debate from what it means practically. What matters for homeowners planning upgrades now is that the federal income tax credit pathway is closed. The question is what replaces it.
What's Still Available in 2026
The loss of 25C and 25D is significant but not the end of incentive programs. Two major federal programs remain intact because they were funded differently — as direct appropriations rather than tax expenditures.
HOMES ($4.3B total) provides rebates of $2,000–$8,000 based on projected whole-home energy savings, with higher amounts for income-qualified households. Unlike a tax credit, this is a rebate — you don't need a tax liability to benefit. Check the HOMES program guide for eligibility details.
HEAR ($4.5B total) provides point-of-sale discounts on qualifying equipment. A qualifying heat pump earns up to $8,000. A heat pump water heater earns up to $1,750. The program is income-gated (150% AMI), but it's real money and it's still funded. The HEAR program guide covers income thresholds and equipment requirements.
State-level rebate programs also remain available in most states, independent of federal tax credit policy. California, New York, Colorado, Michigan, and Massachusetts all run substantial state programs. Use the state rebates index to find programs in your state.
Utility rebates haven't been affected by the OBBB at all. Many utilities offer rebates on heat pumps, smart thermostats, insulation upgrades, and water heaters that can reach several hundred to a few thousand dollars per project. These are the least advertised but often the most reliable incentive remaining.
For projects like solar, the math changed substantially. Without the 25D credit, a $30,000 system that previously generated a $9,000 tax credit now offers no federal incentive at the residential level. Some state net metering programs and local incentives remain, and the solar rebate calculator can show you current state-level incentives. But the economics are harder than they were a year ago.
The stacking rebates guide covers how to layer HOMES, HEAR, state, and utility incentives to maximize total benefit on a single project. And the homepage calculator runs current estimates for your specific upgrade and state — which is the fastest way to see what's actually available before you commit to a project.
Should You Still Do the Upgrade?
The end of 25C and 25D doesn't mean efficiency upgrades stopped making financial sense. It means the payback period got longer for some projects. Heat pumps, for example, generate real operational savings — lower energy bills year over year — that compound over time. The heat pump rebates guide has updated breakeven analysis that accounts for the loss of the tax credit and focuses on what HOMES and HEAR can still offset.
Insulation is still among the highest-return efficiency investments regardless of incentives. A properly air-sealed and insulated attic can cut heating and cooling loads by 20–30%. The insulation calculator can project energy savings in your climate zone.
What changed is the urgency calculus. Before, there was a concrete tax credit deadline creating pressure to act. Now, the urgency comes from HOMES and HEAR fund depletion rather than a tax year cutoff. Those programs are first-come-first-served. Run the numbers, decide whether they pencil out, and move before your state's waitlist closes.