2026 Insulation Incentive Summary
- Federal Section 25C: 30% of insulation material cost up to $1,200 per year through 2032
- Dominion Energy (VA): $300-$1,500 rebates for qualifying insulation work
- Pepco (MD/DC): EmPOWER Maryland insulation rebates, $0.30-$0.40 per sq ft attic typical
- BGE (MD): EmPOWER Maryland program, similar to Pepco
- Federal credit is annually-recurring; phase projects across years to maximize
- Utility rebates typically require pre-approval and approved contractor
If you live in Virginia or Maryland and you are considering insulation work in 2026, the short answer is the available incentives are still substantial and likely the best they have been in a decade, but they require some paperwork and careful contractor selection. This guide walks through the federal Energy Efficient Home Improvement Credit, the active Virginia and Maryland utility rebate programs, what qualifies, and how to actually claim each one.
The 2022 Inflation Reduction Act (IRA) extended and expanded the federal residential energy efficiency tax credits through 2032. Combined with the long-running utility rebate programs operated by Dominion Energy, Pepco, and BGE, a properly-scoped insulation project in 2026 can recover 25 to 50 percent of the project cost through credits and rebates. The math is simply better than it was during most of the 2010s.
The Federal Energy Efficient Home Improvement Credit (Section 25C)
The cornerstone incentive is the federal Energy Efficient Home Improvement Credit, codified in Section 25C of the Internal Revenue Code and substantially expanded by the IRA effective January 1, 2023. Key terms:
Credit amount: 30 percent of qualified expenses for insulation, with an annual cap of $1,200 specifically for insulation, windows, doors, energy audits, and certain other measures (subject to sub-limits per category).
Insulation cap: Within the $1,200 annual cap, insulation expenses are not separately sub-capped (unlike windows, which are capped at $600 within the $1,200 limit).
What qualifies: Spray foam (open-cell and closed-cell), blown-in cellulose, blown-in fiberglass, mineral wool batts, fiberglass batts, rigid foam board, and air-sealing material. The product must meet the prescriptive criteria of the most recent International Energy Conservation Code (IECC) in effect two years prior to the year of installation. For 2026, this means meeting the 2021 IECC at minimum.
Labor: Generally not eligible for insulation specifically. Only the material cost portion of an insulation contractor's invoice qualifies. (Labor is eligible for some other Section 25C measures like heat pump installation.)
Where: Existing principal residence located in the United States. New construction does not qualify. Vacation homes and rental properties have different rules.
Annual basis: The $1,200 cap resets each calendar year. A homeowner doing a phased multi-year project (attic this year, crawl next year) can claim the full credit each year up to the cap.
Through 2032: The credit is currently authorized through December 31, 2032. Subsequent years are subject to congressional reauthorization.
How to Claim the Federal Credit
Claiming the credit is straightforward. File IRS Form 5695 (Residential Energy Credits) with your federal tax return for the year the work was completed and paid for. The credit flows to Form 1040 as a reduction in tax liability.
Documentation to keep: contractor invoice with itemized scope (separating material cost from labor cost where possible), proof of payment, and Manufacturer Certification Statement showing the product meets IECC criteria. Most spray foam manufacturers (BASF, Demilec, Lapolla, Icynene, Huntsman) publish these statements on their websites.
Important detail: The credit is non-refundable. It reduces your tax liability dollar-for-dollar, but does not generate a refund beyond what you have already paid in. If your federal tax liability for the year is less than the credit, the excess credit is lost (it does not roll forward).
For most working homeowners with standard tax liability, this is not a constraint. For lower-income homeowners or retirees with limited federal tax liability, the credit may be partially or fully unusable. The IRA included a separate Inflation Reduction Act program (the Home Electrification and Appliance Rebates / Home Efficiency Rebates / HEEHRA / HOMES) that provides direct rebates for lower-income households, which may be more useful than the tax credit. As of 2026, those programs are being administered through state energy offices in Virginia and Maryland with implementation timelines that vary.
Dominion Energy Rebates (Virginia)
Dominion Energy operates the largest residential energy efficiency rebate program in Virginia. The program is funded through Dominion's energy efficiency rider on Virginia electric bills and delivers rebates for measures including insulation, duct sealing, smart thermostats, and other envelope and HVAC upgrades.
Eligibility: Home must be served by Dominion Energy for electric service. Customers of Northern Virginia Electric Cooperative (NOVEC) or other electric utilities are not eligible for Dominion rebates but may have separate cooperative programs.
Insulation rebates: Rebate amounts for insulation work typically range from $300 to $1,500 depending on scope, home type, and current program rules. Attic insulation, wall insulation, basement and crawl space insulation, and air sealing all may qualify under different sub-programs.
Approved contractor requirement: Most Dominion insulation rebates require the work to be performed by a contractor on Dominion's approved list. We are an approved Dominion contractor and file the rebate paperwork directly on behalf of homeowners.
Pre and post documentation: Some programs require a pre-installation home energy assessment and a post-installation verification. Document carefully and work with a contractor familiar with the process.
For more on what kind of work Dominion rebates typically cover, see our Virginia insulation energy efficiency guide.
Pepco and BGE Rebates (Maryland and DC)
Maryland and DC homeowners are served primarily by Pepco (DC and Montgomery and Prince George's counties) and BGE (Baltimore-Washington corridor and Anne Arundel, Howard, and parts of Prince George's). Both utilities operate insulation rebate programs under the EmPOWER Maryland umbrella, established by the Maryland Public Service Commission.
Pepco insulation rebates: Typical 2026 amounts: $0.30 to $0.40 per square foot of qualifying attic insulation, $1.00 to $1.50 per linear foot of duct sealing, additional rebates for air sealing and other envelope measures. Annual program caps and specific dollar amounts updated each program year.
BGE insulation rebates: Similar program structure to Pepco under the same EmPOWER Maryland umbrella. Insulation rebates of similar magnitude. Some BGE programs include a free home energy audit option that can identify additional qualifying measures.
Approved contractor and pre-approval: Most rebates require pre-approval through the utility before work begins, and use of an approved contractor (we work with both Pepco and BGE programs).
BGE Smart Energy Rewards and Pepco peak rebates: Beyond the insulation rebates, both utilities offer ongoing peak demand rebates that benefit homes with reduced summer cooling load (which insulation helps create).
For more on Maryland-specific insulation work, see our Bethesda Montgomery County guide and Silver Spring guide.
The Math: Federal Credit + Utility Rebate + Energy Savings
Stacking the available incentives makes 2026 an unusually favorable year to insulate. Consider a representative $14,000 whole-house spray foam project on a typical NoVA or MD home:
Federal Section 25C credit: $1,200 (the annual cap, since the insulation material portion of the project easily exceeds the cap calculation).
Dominion or Pepco/BGE rebate: $750 (typical mid-range for a multi-measure project).
Net cost: $14,000 - $1,200 - $750 = $12,050.
Annual energy savings: $1,400 (typical for a complete envelope retrofit on a 2,400 square foot home).
Effective payback: $12,050 / $1,400 = 8.6 years. Useful life of the foam: 50+ years.
For phased multi-year projects, the federal credit can be claimed each year, increasing the total recovery. A homeowner who does $4,000 of insulation work each year for three years can claim $1,200 each year (if material cost portion supports it) for a total of $3,600 in federal credit over the three-year period.
What Specifically Qualifies for Each Program
| Measure | Federal 25C | Dominion (VA) | Pepco/BGE (MD/DC) |
|---|---|---|---|
| Open-cell spray foam | Yes | Yes | Yes |
| Closed-cell spray foam | Yes | Yes | Yes |
| Blown-in cellulose | Yes | Yes | Yes |
| Blown-in fiberglass | Yes | Yes | Yes |
| Mineral wool batts | Yes | Yes | Yes |
| Fiberglass batts | Yes (if meets IECC) | Yes | Yes |
| Rigid foam board | Yes | Yes | Yes |
| Vapor barrier (encap) | No | Sometimes (with foam) | Sometimes (with foam) |
| Air sealing material | Yes | Yes | Yes |
| Duct sealing | No (separate credit may apply) | Yes | Yes |
| Energy audit (separate credit) | Up to $150 within $1,200 cap | Often included free | Often included free |
| Labor cost | No (insulation only) | Yes (counted toward project) | Yes (counted toward project) |
Time Sensitivity and Program Risk
The federal Section 25C credit is currently scheduled through December 31, 2032, which provides a relatively stable seven-year window. Subsequent extension or expiration depends on congressional action.
Utility rebate programs are funded through state regulatory mechanisms (the EmPOWER Maryland Act in MD, Dominion's energy efficiency rider in VA) and are subject to annual or triennial review. Specific rebate dollar amounts and qualifying scope can change year-to-year. Programs have not been eliminated in any DMV jurisdiction in recent memory, but specific generosity has fluctuated.
The practical takeaway: 2026 is an unusually favorable year to insulate. The federal credit is generous, stable through 2032, and can be combined with active state-level rebates. Homeowners considering insulation should not assume programs will continue at current levels indefinitely; the federal credit is the most stable, while utility rebates may change.
Practical Steps for Maximizing Available Incentives
Step 1: Get a walk-through quote from a contractor familiar with both federal credit documentation and utility rebate processing.
Step 2: If a phased multi-year approach makes sense (large project, federal credit cap is binding), structure work to claim the federal credit in each calendar year.
Step 3: Verify utility rebate eligibility before signing the contract; contractor will typically pre-approve through the utility.
Step 4: Get itemized invoice with material cost separated from labor cost for the insulation portion.
Step 5: Get the Manufacturer Certification Statement from the contractor for the foam product used; keep with tax records.
Step 6: File IRS Form 5695 with the federal return for the year of completion. File state utility rebate paperwork as the program requires (most are filed by the contractor).
For more on the broader cost picture, see our DMV spray foam cost guide and foam insulation services overview.
Mistakes Homeowners Make on Tax Credit Documentation
The federal Section 25C credit and the Dominion, Pepco, and BGE rebate programs all reward homeowners who document their work correctly. They penalize sloppy paperwork. After helping hundreds of Virginia and Maryland homeowners file, here are the mistakes we see most often.
Using the wrong invoice format
For Section 25C, the IRS expects an invoice that breaks out the cost of the qualifying insulation material from labor. Many contractors invoice as a single lump-sum project price, which makes the credit calculation difficult and audit-risk higher. We provide an itemized invoice that separates material from labor on every project so the credit math is clean.
Missing the manufacturer compliance certification
Section 25C requires that the insulation product meet the specified IECC or ENERGY STAR standards. Manufacturers issue compliance certifications for qualifying products. We attach the relevant manufacturer certification to every invoice so homeowners have it if the IRS asks.
Filing the rebate application after the deadline
Dominion, Pepco, and BGE all have strict post-installation filing windows, usually 60-90 days. Miss the window and the rebate is gone. We hand the homeowner a complete rebate package on the day of project completion with the deadline highlighted on the cover sheet.
Frequently Asked Questions
What is the federal insulation tax credit in 2026?
The Energy Efficient Home Improvement Credit (Section 25C of the Internal Revenue Code) covers 30 percent of the cost of qualifying insulation up to $1,200 per year through 2032. Qualifying insulation includes spray foam (open-cell and closed-cell), blown-in cellulose, blown-in fiberglass, mineral wool batts, and rigid foam board, when installed in an existing primary residence located in the United States. Labor is generally not eligible for the insulation portion (only material cost), though the closely related credit for windows, doors, and heat pumps does include labor.
Does Dominion Energy offer insulation rebates in Virginia in 2026?
Yes, Dominion Energy continues to operate residential energy efficiency rebate programs in Virginia in 2026 under the Home Energy Conservation programs. Rebates for qualifying insulation work typically range from $300 to $1,500 depending on scope and home type. Eligibility requires the home to be served by Dominion electricity, the work to be performed by a Dominion-approved contractor, and pre and post-installation documentation. Specific dollar amounts and qualifying scope are updated annually; we typically file the rebate paperwork on behalf of homeowners as part of the project.
What about Pepco and BGE rebates in Maryland and DC?
Pepco operates the EmPOWER Maryland program in much of suburban Maryland and DC, offering rebates for qualifying insulation work, typically $0.30 to $0.40 per square foot of attic insulation, $1.00 to $1.50 per linear foot of duct sealing, and other measure-specific incentives. BGE serves the Baltimore-Washington corridor portions of Maryland with similar programs under the EmPOWER Maryland umbrella. Annual rebate caps and qualifying scope vary by year. Both utilities require pre-approval and use of approved contractors for most insulation rebates.
Can I combine the federal credit with utility rebates?
Yes, in most cases. The federal Section 25C credit and utility rebates from Dominion, Pepco, or BGE are generally not mutually exclusive and can be claimed together on the same project. The math: a $14,000 spray foam insulation project might generate a $1,200 federal credit (capped at the annual maximum), a $750 Dominion rebate, and net out to $12,050. With $1,500 in annual energy savings, payback drops to roughly seven years. Always verify program rules at the time of project start; some utility programs reduce their payment if the federal credit is also claimed.
When do these credits and rebates expire?
The federal Section 25C Energy Efficient Home Improvement Credit is currently scheduled through December 31, 2032, with the annual $1,200 cap on insulation. Utility rebate programs are typically funded year-by-year and may change or end based on state regulatory decisions. As of 2026, all major DMV utility insulation rebate programs are active. Homeowners considering insulation work should not assume programs will continue indefinitely; the federal credit is the most stable and longest-running program currently available.
How do I actually claim the federal insulation tax credit?
File IRS Form 5695 (Residential Energy Credits) with your federal tax return for the year the work was completed and paid for. The credit is non-refundable, meaning it reduces your tax liability but does not generate a refund beyond what you have paid in. Keep documentation: contractor invoice with itemized scope, proof of payment, and (for spray foam) the Manufacturer Certification Statement showing the product meets the IECC criteria. The annual $1,200 cap resets each calendar year, so phased multi-year projects can claim the credit each year up to the cap.
Get Started on Your Incentive-Eligible Project
We have been processing federal Section 25C credit documentation, Dominion Energy rebates, and Pepco/BGE rebates as a regular part of our work for years. Most projects start with a fifteen-minute phone consultation. We will quote the work, confirm rebate eligibility, and walk you through the documentation needed to claim each available incentive.
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