As of October 2026, Grantoria lists 129 Energy Efficiency Grants — 17 open right now, across 46 funding agencies. Award amounts range $1.5K to $550M. The next application deadline is November 5, 2026. All listings are free, with direct links to the official application.
The Regional Site Readiness Program aims to better prepare sites for industrial development across the state. Input from community leaders and economic development experts has raised…
🏛 Illinois Department of Commerce and Economic Opportunity⏰ Oct 20, 2026
The U.S. Department of Energy (DOE)’s Hydrocarbons and Geothermal Energy Office (HGEO) is issuing this Request for Information (RFI) to notify parties of its potential interest…
🏛 National Energy Technology Laboratory📋 CFDA 81.089⏰ Nov 5, 2026💰
$1 – $2
Innovation Vouchers will provide grants for companies to engage in research projects in partnership with an Illinois institute of higher education. This will facilitate the sharing…
🏛 Illinois Department of Commerce and Economic Opportunity⏰ Nov 6, 2026
In July 2024, Illinois was announced as one of the recipients of an award under the Climate Pollution Reduction Grant program, created by the Inflation Reduction…
DOE CMEI is dedicated to securing America’s energy future by reinforcing domestic critical mineral supply chains, driving next-generation energy technology and manufacturing research, and promoting affordable,…
🏛 Golden Field Office📋 CFDA 81.087⏰ Dec 1, 2026💰
$2,000,000 – $20,000,000
Silcon Carbide Cladding Lead Test Rod Development-Phase 1 Research, development, and fabrication of Silicon Carbide cladding specimens for research reactor insertion, irradiation, and post-irradiation examinations by…
🏛 Idaho Field Office📋 CFDA 81.121⏰ Dec 7, 2026💰
up to $62,500,000
In July 2024, Illinois was announced as one of the recipients of an award under the Climate Pollution Reduction Grant program, created by the Inflation Reduction…
🏛 IFA📋 CFDA 66.046⏰ Dec 31, 2026💰
up to $1,000,000
ONR, ONRG, and MCWL are interested in receiving proposals for Long-Range S&T Projects that offer potential for advancement and improvement of Navy and Marine Corps operations.…
🏛 Office of Naval Research📋 CFDA 12.300⏰ Dec 31, 2026
This grant program provides assistance to small businesses (100 or fewer employees) to undertake energy efficiency, pollution prevention, or natural resource protection projects designed to enhance…
🏛 Pennsylvania Department of Environmental Protection⏰ Mar 19, 2027💰
up to $12,000
The U.S. Military Academy at West Point's mission is "to educate, train, and inspire the Corps of Cadets so that each graduate is a commissioned leader…
🏛 Dept of the Army -- Materiel Command📋 CFDA 12.431⏰ Mar 31, 2027
SC hereby announces its continuing interest in receiving applications for support of work in the following program areas: · Advanced Scientific Computing Research· Basic Energy Sciences· Biological and Environmental Research· Fusion…
The Pipeline Investment Program (PIPE) provides grants to construct the last few miles of natural gas distribution lines to business parks, existing manufacturing and industrial enterprises,…
🏛 Pennsylvania Department of Community & Economic Development⏰ Dec 31, 2035
The U.S. National Science Foundation Directorate for Engineering (NSF ENG) supports foundational research for electrical, communications and computing systems through the following programs: The Electronic, Photonic, Magnetic,…
🏛 U.S. National Science Foundation📋 CFDA 47.041⏰ Aug 12, 2076
Grantoria currently lists 129 energy efficiency grants, of which 17 are open for applications right now. The database is refreshed daily from official federal sources (Grants.gov and SAM.gov).
When is the next deadline?
The next application deadline is November 5, 2026 — about 16 days away. Deadlines vary by program; open any grant to see its exact closing date and application window.
Who is eligible for energy efficiency grants?
Eligibility is set by each funding program, but energy efficiency grants in this category most often support: Nonprofits, Small Business (SBA-defined), Public Authority and Tribal Nation. Check each grant's eligibility summary for the exact applicant types and requirements.
How much funding is available?
Award sizes range from $1.5K to $550M, depending on the program and applicant. Each grant shows its specific funding range where the agency has published one.
Is Grantoria free to use?
Yes — Grantoria is completely free. No account or subscription is required to browse energy efficiency grants, view deadlines and eligibility, or reach the official application.
How do I apply?
Open any grant to see its full profile — eligibility, required documents, deadlines and a direct link to the official application on the funding agency's website. You apply through the federal portal; Grantoria simply helps you find the right opportunity.
About Energy Efficiency grants
Energy efficiency grants support projects that reduce energy consumption and promote sustainable practices across residential, commercial, and industrial sectors. With 129 active grants currently listed, this category attracts significant investment from leading agencies including the U.S. National Science Foundation and the Rural Business-Cooperative Service, which prioritize innovation and rural development.
Most awards range from $875,000 to $3.4 million and follow competitive application processes. Private and public universities, along with nonprofits, represent the primary recipients, with a focus on research, capacity building, and program implementation. Grants often target Native American communities, tribal lands, and rural areas. Using demographic and award size filters can help identify opportunities aligned with your organization's goals and context.
