State Energy Rebate Stacking Guide 2026

In 2026, stack home energy incentives in this order. First, confirm that no federal tax credit applies: the 25C and 25D credits ended for 2026 installations. Second, claim one federal rebate per upgrade, HEEHR or HOMES but never both on the same item. Third, add state, utility and other non-federal money on top. Fourth, finance what is left. Two rules bind the whole stack: total funding can never exceed the project's cost, and since DOE Program Notice 26-2 took effect on May 29, 2026, the HEEHR rebate only pays for upgrades from existing electric equipment to more efficient electric equipment, plus new construction.

Pre-approval, contractor participation and equipment eligibility still decide the real savings. What has changed since this guide was first written in June is which layers exist and which of them a given house qualifies for. This version is built from the federal statutes, Public Law 119-21, DOE's program requirements and the two May 2026 program notices, all checked on October 28, 2026. It is general information, not tax, legal or financial advice; for a tax question about a 2025 project, ask a tax professional.

1. The 2026 Incentive Ladder

When the Inflation Reduction Act passed, homeowners heard about thousands of dollars to electrify their homes. In practice the money is split between tax law, federal rebates run by states, utility programs and lenders, and each layer has its own rules about combining with the others.

Treat the system as a verification ladder you climb in order:

To see how these savings affect your household budget or home equity cash flow, check out the mortgage payment and debt repayment calculators at CalculatorVillage.

2. Rung 1: What Ended on December 31, 2025

Federal tax credits used to be the first layer of a stack. For 2026 work, they are gone, but the way they ended still matters for anyone whose project straddled the new year.

Both endings come from one law. Public Law 119-21, signed on July 4, 2025, rewrote the end dates of four energy tax provisions that touch homes:

The same law did not touch the two rebate programs in the next rung. Its rescission list in section 50402(b) names sections 50123, 50141, 50144, 50145, 50151, 50152, 50153 and 50161 of the Inflation Reduction Act; HOMES (section 50121) and HEEHR (section 50122) are not on it.

Section 25C: Energy Efficient Home Improvement Credit

This credit covered heat pumps, heat pump water heaters, insulation, exterior doors, windows, energy audits and some electrical work, up to $1,200 a year plus up to $2,000 a year for qualified heat pumps, heat pump water heaters and biomass stoves or boilers.

• Rule: the statute says the section does not apply to any property placed in service after December 31, 2025.
• What decides it: when the equipment was installed and in service, not when you paid. The IRS says you claim the credit for the tax year the property is installed, not merely purchased.
• Still relevant when: a qualifying project placed in service in 2025 is claimed on the 2025 return, with the qualified manufacturer identification number the IRS requires for 2025 items.

Section 25D: Residential Clean Energy Credit

This credit covered solar panels, battery storage, geothermal heat pumps and similar property at 30% of cost.

• Rule: the statute says the credit does not apply to expenditures made after December 31, 2025.
• What decides it: under section 25D(e)(8)(A), "an expenditure with respect to an item shall be treated as made when the original installation of the item is completed." The IRS page for the credit puts it the same way for taxpayers: you claim it for the tax year when the property is installed, not merely purchased.
• The straddle case: a deposit or even full payment in 2025 does not create a 25D credit if installation was completed in 2026. Section 70506 changed only the end date; it added no exception for projects that began installation in 2025 and finished in 2026.
• Carryforward still works: section 25D(c) carries any unused credit to the next tax year. A household that earned a 25D credit for a 2025 installation but could not use all of it against 2025 tax can carry the excess to its 2026 return. That is a credit from an old project, not a new one.

Tax credits and rebates on the same 2025 project

For 2025 projects that also received a rebate, DOE's program requirements describe how the two interact: the rebate is treated as a reduction in the purchase price, and the credit is calculated on the cost remaining after the rebate. DOE's example: a $400 eligible product with a $100 rebate supports a 30% credit on $300, or $90. The same guidance says the consumer does not report the rebate as income.

For heat pumps specifically, use our current heat pump rebate by state guide before a contractor subtracts a federal credit from your 2026 quote. Our 25C vs 25D explainer covers the 2025 claims in more detail.

3. Rung 2: One Federal Rebate per Upgrade

The two federal rebate programs are funded by the Inflation Reduction Act and run by state energy offices. Each statute says its rebate may not be combined with any other federal grant or rebate for the same upgrade, and each names the other program explicitly. You choose one per item.

HEEHR (High-Efficiency Electric Home Rebates)

DOE renamed the program from "Home Electrification and Appliance Rebates" (HEAR) to HEEHR in Notice 26-2, matching the statute. It is income-tested.

• Eligibility: households below 150% of area median income (AMI). Below 80%, the rebate can cover up to 100% of cost; at 80% to 150%, up to 50% of cost, within the same caps. Our HEEHR income limits guide works through the AMI tables.
• Statutory caps per project type:
  • Heat pump for space heating or cooling: $8,000
  • Heat pump water heater: $1,750
  • Electric stove, cooktop, range or oven: $840
  • Electric heat pump clothes dryer: $840
  • Electric load service center (panel) upgrade: $4,000
  • Electric wiring: $2,500
  • Insulation, air sealing and ventilation: $1,600
• Household cap: $14,000 in total.
• Since May 29, 2026 (Notice 26-2): only upgrades from existing electric equipment to more efficient electric equipment, plus new construction. Insulation and air sealing must come before heating and cooling upgrades unless the home already meets a DOE-approved, state-specified level.

The earlier version of this page listed $4,000 for a heat pump water heater. The statute's cap is $1,750; the $4,000 figure is the panel upgrade cap.

HOMES (Home Owner Managing Energy Savings)

HOMES pays for energy savings rather than specific equipment, and the statute sets no upper income limit.

• Modeled savings, single-family: 20% to 35% earns the lesser of $2,000 or 50% of cost; 35% or more earns the lesser of $4,000 or 50% of cost.
• Households below 80% of AMI: the lesser of $4,000 or 80% of cost, and the lesser of $8,000 or 80% of cost, for the same two savings tiers. States can propose higher amounts with DOE approval.
• Measured savings: a performance payment for homes that achieve at least 15% measured savings.
• Since May 29, 2026 (Notice 26-1): no fuel-switching ban, the ENERGY STAR requirement is optional, and the post-install geotagged photo and on-site inspection requirements were removed.

Which federal rebate to choose

4. Rung 3: Non-Federal Money on Top

DOE's program requirements say non-federal funding, such as money authorized by a state or local government, a utility program or philanthropic support, can co-fund remaining costs beyond the value of the federal rebate. Notice 26-2 goes further and highly recommends that states stack and braid HEEHR funding with other programs, as the statute permits.

Utility companies offer cash-back rebates for measures such as heat pump installations, smart thermostats, heat pump water heaters and attic insulation. Amounts vary by utility and change often, so price them from your utility's current program page or the ENERGY STAR rebate finder rather than from a national average.

Three cautions apply to this rung:

• Each program sets its own combining rule. A utility may reduce its rebate when a federal rebate applies, or require that its rebate be applied first. DOE notes that other funding sources may restrict combining for the same single upgrade.
• The total cannot exceed the project cost. States must document each upgrade that combines funding so that federal, state and other money together do not exceed the total project cost.
• State money is not bound by the federal fuel rule. A state-funded or ratepayer-funded clean-heat program can still pay for an oil-to-heat-pump switch even though HEEHR cannot.

5. Rung 4: Financing the Remainder

DOE's guidance treats federal loans, and loans made from earlier federal grants (such as revolving loan funds), as financial products rather than grants. They can therefore finance costs beyond the rebate. Utility on-bill financing and state green bank loans are non-federal and follow their own rules.

Notice 26-2 added a mechanism that makes this easier: a household that would otherwise receive a HEEHR rebate can direct the payment to an eligible entity representative, such as a third-party lender, after the project is complete. Notice 26-1 added the same option for HOMES, through an aggregator. If you are financing, ask whether your lender participates.

6. The Stacking Playbook, Worked Through

Step 1: Identify your current heating fuel and income tier

This now decides which federal rebate exists for you. Electric resistance homes below 150% of AMI start with HEEHR. Fossil-fuel homes start with HOMES and state or utility programs.

Step 2: Get itemized quotes

Ask more than one contractor from your program's qualified list to quote, and ask each quote to name the equipment by model number and AHRI reference number. That lets you check eligibility yourself against the product list your program uses, and it makes the quotes comparable line by line, which matters because a capped rebate is calculated on the qualifying project cost.

Step 3: Stack the savings

The baseboard home's numbers follow the statute: 50% of $16,000 is $8,000, which is also the heat pump cap, so the moderate-income household receives the full $8,000. After a $1,500 utility rebate, it pays $6,500, a 59% reduction. The gas-heated home cannot use HEEHR for the same equipment. If its state has launched HOMES and the heat pump plus air sealing reaches 35% modeled savings, HOMES pays the lesser of $4,000 or 50% of cost, which is $4,000. After the same utility rebate it pays $10,500, a 34% reduction.

Upgrading your home's energy systems can also affect resale value. Review the latest home equity trends for energy retrofits on BubbleWatch.

7. Stacking Rules Checklist

To keep incentives from being rejected, confirm each of these before work starts:

• One federal rebate per upgrade: you cannot claim both a HEEHR rebate and a HOMES rebate for the same individual upgrade, such as the same heat pump.
• No 2026 tax credit: 25C ended for property placed in service after 2025 and 25D for expenditures made (installations completed) after 2025.
• Fuel rule: for a HEEHR heat pump rebate, the equipment being replaced must be electric, unless your state's reading of the keep-your-furnace provision covers your project.
• Order of work: insulation and air sealing before heating and cooling upgrades, unless the home already meets the state's level.
• Utility stacking: confirm in writing whether the utility allows its rebate on top of a federal rebate, and in which order.
• Prequalification: HEEHR, HOMES and many utility programs require approval or a baseline assessment before installation.
• Contractor: many state programs require a contractor from their qualified list; Notice 26-2 directs states to vet contractors against the Treasury Department's Do Not Pay database.
• Total cap: all funding together cannot exceed the project cost.

8. How the Rebate Reaches You

The original HEEHR design centered on point-of-sale rebates: the contractor or retailer applies the discount on the invoice, and the state reimburses them. Notice 26-2 kept point-of-sale as the statutory pathway but widened the options:

• Mail-in rebates are now allowed in addition to the point-of-sale retail pathway for each qualified project category.
• Retail and online purchases are encouraged, including retail, e-commerce, direct-to-consumer and marketplace vendors.
• DIY purchases and installations can be rebated where state and local codes allow, except HVAC system installations.
• Third-party installers not on the qualified contractor list can install DIY-eligible products, with reasonable installation costs allowable.

The July version of this page said that direct-to-consumer rebate checks were forbidden and that a contractor offering one was lying. After Notice 26-2, a mail-in pathway can be legitimate if your state has adopted it. The test is not the payment method; it is whether the method appears on your state program's own website, and whether your application is approved before work starts.

How a point-of-sale HEEHR rebate is supposed to work

1. You find a contractor on your state energy office's qualified list.
2. Income eligibility is verified through the state's process.
3. The project receives an approved reservation for a stated amount.
4. The invoice shows the rebate as a line item subtracted from the price.
5. You pay the remainder.
6. The state reimburses the contractor after the required documentation is submitted.

If a contractor asks you to pay the full price and promises a rebate later, ask which state pathway that is and find it on the state program's site. If you cannot, do not sign.

9. HEEHR or HOMES Near the Income Ceiling

Households near 150% of AMI often discover HEEHR's ceiling late. There is no phase-out: at or above 150%, HEEHR pays nothing. HOMES is the fallback, because its statute sets no upper income limit.

The modeled savings pathway

Under HOMES, a qualified assessor models the home's energy use before and after the planned upgrades:

1. The assessor builds a model of current energy use, typically using utility bills and a site visit.
2. The model is rerun with the proposed upgrades.
3. Modeled savings of 20% to 35% earn the lesser of $2,000 or 50% of cost; 35% or more, the lesser of $4,000 or 50% of cost.

Notice 26-1 also allows uncalibrated modeling for single-family homes in limited circumstances and lets states propose alternative approaches, which can simplify the process.

Combining measures to reach the higher tier

A heat pump alone may land in the 20%-35% band. Adding attic air sealing and insulation can lift the modeled savings over 35%. As an illustration with stated inputs: if $1,500 of envelope work moves a project from the $2,000 tier to the $4,000 tier, the extra rebate ($2,000) exceeds the extra cost, and the house is more comfortable as well. Whether that happens in your home depends on the model, so ask the assessor to run both packages before you choose.

10. Whole-Home vs Partial Heat Pump Projects

Non-federal programs do not all define a heat pump project the same way, and the definition can matter more than the dollar amount on the flyer.

What "whole-home" can mean

Efficiency Maine's whole-home heat pump guidance is a useful example of how a state program draws the line. It describes installing enough heat pump capacity to heat the entire home and run all winter, so the old central system can be turned off and kept as an emergency backup. The old system is not removed in that model; it stops being the main heat source. The page notes exceptions where the old system also makes domestic hot water or is tied to an automatic emergency generator.

Other programs may define the line differently: a minimum share of the home's heating load, a sizing test, or removal of the old equipment. Ask for the written definition before you size the system, because a heat pump sized for two rooms will not meet a whole-home test, and resizing after installation is expensive.

The federal contrast

Notice 26-2 explicitly allows homes to keep existing fossil-fuel HVAC when installing a heat pump under HEEHR, even if the heat pump will not become the primary source of heating and cooling. So the federal rebate does not penalize keeping a furnace as backup. The fuel rule bites on what is being replaced, not on what stays.

The kitchen and water heater question

HEEHR's caps are separate per project type: $1,750 for a heat pump water heater and $840 for an electric stove, cooktop, range or oven, inside the $14,000 household cap. If a state program you are stacking with asks for more than space heating, those federal lines can fund part of it, subject to the same electric-to-electric rule after Notice 26-2. Check each program's definition before you plan around it.

11. Timing: Assessments, Baselines and Emergencies

A common way to lose an incentive is to install before the program has what it needs.

The mandatory baseline

If a program requires a pre-installation assessment, an assessor must see the old equipment, record it, and often test the home while the old system is still in place. HOMES modeling also starts from the home as it is. Replacing equipment first destroys the baseline the program needs.

Emergency replacements

Winter failures happen. DOE's program requirements allow states, in emergency replacements, to verify income eligibility after a self-attested rebate has been issued rather than before. That flexibility is about income checks; it does not waive the program's other documentation. Before an emergency installer removes a failed system, ask them to photograph the old equipment, record its model and serial numbers, and keep the failed parts until the program confirms what it needs.

The best contractor for a rebate-funded project is not always the one with the lowest upfront bid. It is the one who knows your state and utility programs and will handle the paperwork in the right order. Our home energy audit rebate checklist lists what to keep.

12. Manufacturer Promotions and Timing

A fourth source of money can come from manufacturers, distributors or the contractor's own pricing, not from government or utilities. Ask whether any promotion applies to the specific model quoted, and get it on the invoice.

How a discount interacts with a capped rebate

A private discount is not a public program, so it has no income test of its own. What it can change is the project cost the public rebates are calculated on. DOE's guidance requires states to document that federal, state and other funding together do not exceed the total project cost. Confirm with your state program whether a manufacturer discount must be deducted from the project cost before the rebate is calculated. On a moderate-income HEEHR project, where the rebate is 50% of cost up to the cap, a lower cost can mean a lower rebate below the cap.

Timing a planned replacement

As an illustration with stated inputs: a $16,000 project with a $1,500 utility rebate costs $14,500. If the contractor discounts the same project to $15,000 and a $1,000 manufacturer promotion applies, it costs $12,500 after the same utility rebate. Neither discount is guaranteed; the point is that a replacement you can schedule gives you time to ask for both and to get program approval first. A failing system does not.

Once your incentives are planned, the next step is to read Heat Pump Rebates by State 2026 and check the live program layer, including your state's launch status, before you pay an HVAC deposit.

Frequently Asked Questions

Can I stack HEEHR and HOMES rebates?

Not on the same upgrade. Both statutes bar combining the rebate with any other federal grant or rebate for the same project, and each names the other program. You can use HEEHR for one upgrade and HOMES for a different one only if your state's programs allow it.

Can I stack a utility rebate with a federal rebate?

Usually, if both programs allow it. DOE's guidance says non-federal funding, including utility programs, can co-fund costs beyond the federal rebate. The total from all sources cannot exceed the project cost, and the utility may set its own order or reduce its rebate when another incentive applies.

Can I still claim a federal tax credit for a heat pump installed in 2026?

No. Section 25C does not apply to property placed in service after December 31, 2025. Section 25D does not apply to expenditures made after that date, and an expenditure is treated as made when installation is completed (for an existing home; section 25D(e)(8)(B) treats new construction differently).

I paid a solar deposit in 2025 but installation finished in 2026. Do I get the 25D credit?

Under section 25D(e)(8)(A), an expenditure is treated as made when the original installation is completed. If installation was completed in 2026, the expenditure was made after December 31, 2025, and the credit does not apply. Confirm with a tax professional.

Did the 2025 tax law end the HEEHR and HOMES rebates too?

No. Public Law 119-21 ended the 25C and 25D credits after 2025 and moved the 45L and 179D end dates to mid-2026, but its list of rescinded Inflation Reduction Act funds does not include section 50121 (HOMES) or section 50122 (HEEHR). Whether your state still has rebate money is a separate question for its program page.

Does a rebate count as taxable income?

DOE's program requirements say the home energy rebates are treated as a reduction in the purchase price of the property, and the consumer is not required to report the rebate as income.

Did Program Notice 26-2 change how rebates can stack?

It did not change the federal combining rules, which come from the statute. It narrowed what HEEHR pays for (electric-to-electric and new construction), added an insulation-first requirement, allowed mail-in and DIY retail pathways, let households direct the rebate to a lender, and highly recommended that states stack and braid HEEHR with other funding.

What Would Change This Guide

Three things on the federal side could change the stack before your project starts, and each has a public record to watch. A state's launch or reservation status changes its rung 2 overnight, and it appears on the state energy office's own program page. DOE program notices change the rules for launched programs within months, as Notices 26-1 and 26-2 did in May 2026. And Congress can change the statute: H.R. 4758, introduced on July 25, 2025, would repeal the HEEHR section and rescind its unspent funds. It passed the House 210-199 on February 25, 2026 and was referred to the Senate Committee on Energy and Natural Resources, with no further action recorded in its bill status when this guide was last checked on October 28, 2026. A bill is not law: the U.S. Code still contained section 18795a on that date.