DOE Weatherization Assistance Program (WAP): eligibility, deadline, and how to apply (2026)
Key Facts
- Agency
- Department of Energy (DOE)
- Award Range
- $100,000 - $15,000,000
- Deadline
- Annual State Formula Allocation
- CFDA Number
- 81.042
The DOE Weatherization Assistance Program (WAP) is a federal funding opportunity administered by Department of Energy (DOE). This guide covers everything you need to know to determine whether you qualify and how to submit a competitive application before the Annual State Formula Allocation deadline.
Use our free Grant Finder to discover additional programs you may be eligible for based on your organization type and location.
Eligibility requirements
To qualify for the DOE Weatherization Assistance Program (WAP), applicants must meet the following criteria:
State governments and tribal organizations that distribute funds to local weatherization agencies. Individual homeowners apply through local agencies. Priority is given to households with elderly, disabled, or young children, and those with high energy burden.
Eligibility requirements can change between funding cycles. Always verify the current criteria on the official Grants.gov listing before beginning your application.
If you are not sure whether your organization qualifies, review our guide on best small business grants for alternative programs that may be a better fit.
How to apply: step by step
- Register on SAM.gov. Every federal grant applicant needs an active SAM (System for Award Management) registration. Allow 2-4 weeks for new registrations to process. Existing registrations must be renewed annually.
- Get a UEI number. Your Unique Entity Identifier is assigned through SAM.gov and replaces the old DUNS number. You will need this on every federal application.
- Review the Notice of Funding Opportunity (NOFO). Download the full NOFO from Grants.gov. Pay close attention to review criteria, budget limits, and required attachments.
- Prepare your application package. Most federal grants require a project narrative, budget justification, organizational capacity statement, and supporting documents. Follow the page limits and formatting rules exactly.
- Submit through Grants.gov. Create a workspace, upload all required forms and attachments, and submit before the Annual State Formula Allocation deadline. The system timestamps your submission, and late applications are automatically rejected.
- Confirm receipt. You will receive a tracking number and confirmation email. Check back in 1-2 business days to verify your application passed the Grants.gov validation checks.
For detailed guidance on writing a winning narrative, see our grant writing tips article.
Grant details
| Detail | Information |
|---|---|
| Grant Name | DOE Weatherization Assistance Program (WAP) |
| Funding Agency | Department of Energy (DOE) |
| CFDA Number | 81.042 |
| Award Minimum | $100,000 |
| Award Maximum | $15,000,000 |
| Deadline | Annual State Formula Allocation |
| Category | Energy |
| Matching Required | No matching funds required from states. Local agencies may leverage other funding sources |
| Application Link | Apply on Grants.gov |
Federal grant budgets and priorities shift each fiscal year. The amounts listed above reflect the most recent funding cycle. For the latest figures, check the official program page.
If you are exploring business financing beyond grants, the team at CeoCult covers loans, lines of credit, and alternative funding for founders.
What Applicants Should Know
The Weatherization Assistance Program (WAP) is the nation's largest residential energy efficiency program, having served more than 7 million homes since its creation in 1976. Unlike most federal grants where organizations compete directly for funding, WAP operates as a formula grant distributed to states, territories, and tribal governments based on factors like climate, low-income population, and residential energy expenditures. States then sub-grant funds to a network of roughly 800 local weatherization agencies (typically community action agencies or nonprofits) that perform the actual work.
The average investment per home is approximately $7,584, which covers improvements such as insulation, air sealing, heating system repair or replacement, and energy-efficient window installation. Households that receive weatherization services save an average of $283 per year on energy bills, and the improvements also reduce health and safety risks from carbon monoxide, mold, and extreme indoor temperatures. To qualify for services, household income must be at or below 200% of the federal poverty level, or the household must include a member receiving SNAP, TANF, or Supplemental Security Income.
Priority for services goes to elderly individuals, people with disabilities, and families with children under 6. Individual homeowners and renters do not apply for the federal grant itself. Instead, they contact their local weatherization agency to request services and complete an income verification process. For organizations seeking to become sub-grantees or contractors under WAP, the path runs through your state energy office, not through Grants.gov. Each state maintains a list of approved weatherization providers and periodically solicits new agencies. The Bipartisan Infrastructure Law provided an additional $3.5 billion for WAP, significantly expanding the program's capacity through 2031.
We track new federal funding weekly. Get alerts when new Energy grants open.
Frequently asked questions
Who is eligible for the DOE Weatherization Assistance Program (WAP)?
State governments and tribal organizations that distribute funds to local weatherization agencies. Individual homeowners apply through local agencies. Priority is given to households with elderly, disabled, or young children, and those with high energy burden.. Requirements can change between cycles, so always verify on the official Grants.gov listing before applying.
What is the deadline for DOE Weatherization Assistance Program (WAP)?
The current deadline is Annual State Formula Allocation. Many federal grants operate on annual or rolling cycles. If this deadline has passed, check Grants.gov for the next funding opportunity.
Does DOE Weatherization Assistance Program (WAP) require matching funds?
No matching funds required from states. Local agencies may leverage other funding sources. Matching requirements can vary by fiscal year and applicant type, so confirm with the funding agency before committing resources.