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Federal Grant · Grants.gov · Pennsylvania

High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)

Due Aug 6, 2026·7 days left·General ConstructionView official posting ↗
Issuing agency
Advanced Research Projects Agency Energy
Method
Cooperative Agreement, Other
Category
Grant · Discretionary · CFDA 81.135
PIN
DE-FOA-0003623
Location
Pennsylvania
Posted
Apr 23, 2026
Takeaways by LightRFP AI
  • The Advanced Research Projects Agency Energy (ARPA-E) is issuing a Notice of Funding Opportunity (NOFO) for the High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG) program.
  • The program seeks to fund research and development projects that deliver commercially deployable transuranic (TRU) fuel technologies.
  • The solicitation number is DE-FOA-0003623.
  • Full Applications are due by August 6, 2026.
  • The estimated total program funding is $50,000,000.
  • The award ceiling is $7,000,000 and the award floor is $500,000.
  • The agency contact is Advanced Research Projects Agency Energy, reachable at arpa-e-co@hq.doe.gov or 2022871878.
  • The procurement method is Cooperative Agreement or Other.
  • The program aims for TRU fuel qualification and regulatory acceptance within seven years.

AI-generated, verify all details against the official documents.

Description

This is Modification 01 to the NOFO:
• Inserted certain deadlines and updated dates, including the deadlines for submitting questions and Full Applications (Basic Information, Section IV.C).

NOFO Number: DE-FOA-0003623 – High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)

Agency Overview:

The Advanced Research Projects Agency—Energy (ARPA-E), an organization within the Department of Energy (DOE), is chartered by Congress in the America COMPETES Act of 2007 (Public Law 110–69), as amended by the America COMPETES Reauthorization Act of 2010
(Public Law 111–358), as further amended by the Energy Act of 2020 (Public Law 116–260).

ARPA-E issues this Notice of Funding Opportunity (NOFO) under its authorizing statute codified at 42 U.S.C. § 16538. The NOFO and any cooperative agreements or grants made under this NOFO are subject to 2 C.F.R. Part 200 as supplemented by 2 C.F.R. Part 910.

ARPA-E funds research on, and the development of, transformative science and technology solutions to address the energy and environmental missions of the Department. The agency focuses on technologies that can be meaningfully advanced with a modest investment over a defined period of time in order to catalyze the translation from scientific discovery into early-stage technology. For the latest news and information about ARPA-E, its programs and the research projects currently supported, see: http://arpa-e.energy.gov/.

ARPA-E funds transformational research. Existing energy technologies generally progress on established “learning curves” where refinements to a technology and the economies of scale that accrue as manufacturing and distribution develop drive improvements to the cost/performance metric in a gradual fashion. This continual improvement of a technology is important to its increased commercial deployment and is appropriately the focus of the private sector or the applied technology offices within DOE. In contrast, ARPA-E supports transformative research that has the potential to create fundamentally new learning curves. ARPA-E technology projects typically start with cost/performance estimates well above the level of an incumbent technology. Given the high risk inherent in these projects, many will fail to progress, but some may succeed in generating a new learning curve with a projected cost/performance metric that is significantly better than that of the incumbent technology. ARPA-E will provide support at the highest funding level only for submissions with significant technology risk, aggressive timetables, and careful management of associated risk.

ARPA-E funds technology with the potential to be disruptive in the marketplace. The mere creation of a new learning curve does not ensure market penetration. Rather, the ultimate value of a technology is determined by the marketplace, and impactful technologies ultimately become disruptive—that is, they are widely adopted and displace existing technologies from the marketplace or create entirely new markets. ARPA-E understands that definitive proof of market disruption takes time, particularly for energy technologies. Therefore, ARPA-E funds the development of technologies that, if technically successful, have clear disruptive potential, e.g., by demonstrating capability for manufacturing at competitive cost and deployment at scale.

ARPA-E funds applied research and development (R&D). The Office of Management and Budget defines “applied research” as an “original investigation undertaken in order to acquire new knowledge…directed primarily toward a specific practical aim or objective” and defines “experimental development” as “creative and systematic work, drawing on knowledge gained from research and practical experience, which is directed at producing new products or processes or improving existing products or processes.” Applicants interested in receiving financial assistance for basic research (defined by the Office of Management and Budget as “experimental or theoretical work undertaken primarily to acquire new knowledge of the underlying foundations of phenomena and observable facts”) should contact the DOE’s Office of Science. Office of Science national scientific user facilities (http://science.energy.gov/user-facilities/) are open to all researchers, including ARPA-E applicants and awardees. These facilities provide advanced tools of modern science including accelerators, colliders, supercomputers, light sources and neutron sources, as well as facilities for studying the nanoworld, the environment, and the atmosphere. Projects focused on early-stage R&D for the improvement of technology along defined roadmaps may be more appropriate for support through the DOE applied energy offices including: the Office of Critical Minerals and Energy Innovation (CMEI), the Office of Hydrocarbon and Geothermal Energy, the Office of Nuclear Energy, and the Office of Electricity.

ARPA-E encourages submissions stemming from ideas that still require proof-of-concept R&D efforts as well as those for which some proof-of-concept demonstration already exists. Submissions can propose a project with the end deliverable being an extremely creative, but partial solution.

Program Overview:

Transuranic (TRU) elements—such as plutonium (Pu), neptunium (Np), and americium (Am)—are a significant source of fissile materials that are available across existing nuclear inventories and strategic reserves and have the potential to drive advanced reactor deployment. , The technical feasibility of recycling TRU elements into new fuels has been proven at the experimental scale. Advances in fabrication, safeguards, equipment design, and modeling will create the opportunity to transition from experimental success to commercial-scale deployment, enabling higher-throughput and lower-cost fuel production with real-time materials accountancy. The High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG) program will support research and development projects that deliver commercially deployable TRU fuel technologies, thereby strengthening U.S. energy security, reducing nuclear waste, and enabling long-term energy deployment for public benefit.

The HORNIG program seeks to overcome key technical and economic barriers that have historically prevented using TRU fuels in commercial reactors and to create a clear path to domestic nuclear fuel security by supporting the design, fabrication, and qualification of TRU fuels. The program will fund coordinated, multidisciplinary efforts to deliver transformative advances in fuel performance, manufacturability, cost, and regulatory readiness. Technologies developed under this program must have the potential to enable the following program metrics:
• A domestic TRU fuel supply chain
• A levelized cost of fuel (LCOF) = 1¢/kWh
• TRU fuel qualification and regulatory acceptance within seven years

By enabling production of advanced reactor fuels from domestically sourced fissile materials, the program will reduce dependence on imported uranium and enrichment services, expand U.S. fuel supply options, and support establishment of a closed fuel cycle. These objectives support ARPA-E’s statutory goals of improving energy security and resilience, improving the management of radiological waste, and maintaining U.S. technological leadership in energy technologies. If successful, HORNIG will strengthen U.S. energy security and infrastructure resilience and deliver lasting public benefit through reliable nuclear power.

To view the NOFO in its entirety, please visit https://arpa-e-foa.energy.gov

Contact

Name
Advanced Research Projects Agency Energy
Phone
2022871878
Full source recordfrom Grants.gov
Detail
Id
362035
Ost
POSTED
Cfdas
Id
432864
Cfda Number
81.135
Program Title
Advanced Research Projects Agency - Energy
Opportunity Id
362035
Listed
L
Doc Type
synopsis
Flag2006
N
Revision
1
Synopsis
Version
2
Send Email
Y
Agency Code
DOE-ARPAE
Agency Name
Advanced Research Projects Agency Energy
Award Floor
500000
Agency Phone
2022871878
Archive Date
Nov 12, 2026 12:00:00 AM EST
Cost Sharing
Yes
Created Date
Apr 23, 2026 02:03:24 PM EDT
Mod Comments
This is Modification 01 to the NOFO: • Inserted certain deadlines and updated dates, including the deadlines for submitting questions and Full Applications (Basic Information, Section IV.C).
Posting Date
Apr 23, 2026 12:00:00 AM EDT
Award Ceiling
7000000
Response Date
Aug 06, 2026 12:00:00 AM EDT
Synopsis Desc
This is Modification 01 to the NOFO: • Inserted certain deadlines and updated dates, including the deadlines for submitting questions and Full Applications (Basic Information, Section IV.C). NOFO Number: DE-FOA-0003623 – High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG) Agency Overview: The Advanced Research Projects Agency—Energy (ARPA-E), an organization within the Department of Energy (DOE), is chartered by Congress in the America COMPETES Act of 2007 (Public Law 110–69), as amended by the America COMPETES Reauthorization Act of 2010 (Public Law 111–358), as further amended by the Energy Act of 2020 (Public Law 116–260). ARPA-E issues this Notice of Funding Opportunity (NOFO) under its authorizing statute codified at 42 U.S.C. § 16538. The NOFO and any cooperative agreements or grants made under this NOFO are subject to 2 C.F.R. Part 200 as supplemented by 2 C.F.R. Part 910. ARPA-E funds research on, and the development of, transformative science and technology solutions to address the energy and environmental missions of the Department. The agency focuses on technologies that can be meaningfully advanced with a modest investment over a defined period of time in order to catalyze the translation from scientific discovery into early-stage technology. For the latest news and information about ARPA-E, its programs and the research projects currently supported, see: http://arpa-e.energy.gov/. ARPA-E funds transformational research. Existing energy technologies generally progress on established “learning curves” where refinements to a technology and the economies of scale that accrue as manufacturing and distribution develop drive improvements to the cost/performance metric in a gradual fashion. This continual improvement of a technology is important to its increased commercial deployment and is appropriately the focus of the private sector or the applied technology offices within DOE. In contrast, ARPA-E supports transformative research that has the potential to create fundamentally new learning curves. ARPA-E technology projects typically start with cost/performance estimates well above the level of an incumbent technology. Given the high risk inherent in these projects, many will fail to progress, but some may succeed in generating a new learning curve with a projected cost/performance metric that is significantly better than that of the incumbent technology. ARPA-E will provide support at the highest funding level only for submissions with significant technology risk, aggressive timetables, and careful management of associated risk. ARPA-E funds technology with the potential to be disruptive in the marketplace. The mere creation of a new learning curve does not ensure market penetration. Rather, the ultimate value of a technology is determined by the marketplace, and impactful technologies ultimately become disruptive—that is, they are widely adopted and displace existing technologies from the marketplace or create entirely new markets. ARPA-E understands that definitive proof of market disruption takes time, particularly for energy technologies. Therefore, ARPA-E funds the development of technologies that, if technically successful, have clear disruptive potential, e.g., by demonstrating capability for manufacturing at competitive cost and deployment at scale. ARPA-E funds applied research and development (R&D). The Office of Management and Budget defines “applied research” as an “original investigation undertaken in order to acquire new knowledge…directed primarily toward a specific practical aim or objective” and defines “experimental development” as “creative and systematic work, drawing on knowledge gained from research and practical experience, which is directed at producing new products or processes or improving existing products or processes.” Applicants interested in receiving financial assistance for basic research (defined by the Office of Management and Budget as “experimental or theoretical work undertaken primarily to acquire new knowledge of the underlying foundations of phenomena and observable facts”) should contact the DOE’s Office of Science. Office of Science national scientific user facilities (http://science.energy.gov/user-facilities/) are open to all researchers, including ARPA-E applicants and awardees. These facilities provide advanced tools of modern science including accelerators, colliders, supercomputers, light sources and neutron sources, as well as facilities for studying the nanoworld, the environment, and the atmosphere. Projects focused on early-stage R&D for the improvement of technology along defined roadmaps may be more appropriate for support through the DOE applied energy offices including: the Office of Critical Minerals and Energy Innovation (CMEI), the Office of Hydrocarbon and Geothermal Energy, the Office of Nuclear Energy, and the Office of Electricity. ARPA-E encourages submissions stemming from ideas that still require proof-of-concept R&D efforts as well as those for which some proof-of-concept demonstration already exists. Submissions can propose a project with the end deliverable being an extremely creative, but partial solution. Program Overview: Transuranic (TRU) elements—such as plutonium (Pu), neptunium (Np), and americium (Am)—are a significant source of fissile materials that are available across existing nuclear inventories and strategic reserves and have the potential to drive advanced reactor deployment. , The technical feasibility of recycling TRU elements into new fuels has been proven at the experimental scale. Advances in fabrication, safeguards, equipment design, and modeling will create the opportunity to transition from experimental success to commercial-scale deployment, enabling higher-throughput and lower-cost fuel production with real-time materials accountancy. The High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG) program will support research and development projects that deliver commercially deployable TRU fuel technologies, thereby strengthening U.S. energy security, reducing nuclear waste, and enabling long-term energy deployment for public benefit. The HORNIG program seeks to overcome key technical and economic barriers that have historically prevented using TRU fuels in commercial reactors and to create a clear path to domestic nuclear fuel security by supporting the design, fabrication, and qualification of TRU fuels. The program will fund coordinated, multidisciplinary efforts to deliver transformative advances in fuel performance, manufacturability, cost, and regulatory readiness. Technologies developed under this program must have the potential to enable the following program metrics: • A domestic TRU fuel supply chain • A levelized cost of fuel (LCOF) = 1¢/kWh • TRU fuel qualification and regulatory acceptance within seven years By enabling production of advanced reactor fuels from domestically sourced fissile materials, the program will reduce dependence on imported uranium and enrichment services, expand U.S. fuel supply options, and support establishment of a closed fuel cycle. These objectives support ARPA-E’s statutory goals of improving energy security and resilience, improving the management of radiological waste, and maintaining U.S. technological leadership in energy technologies. If successful, HORNIG will strengthen U.S. energy security and infrastructure resilience and deliver lasting public benefit through reliable nuclear power. To view the NOFO in its entirety, please visit https://arpa-e-foa.energy.gov
Agency Details
Code
ARPAE
Seed
DOE-ARPAE
Agency Code
DOE-ARPAE
Agency Name
Advanced Research Projects Agency Energy
Top Agency Code
DOE
Opportunity Id
362035
Applicant Types
Id
"99"
Description
"Unrestricted (i.e., open to any type of entity above), subject to any clarification in text field entitled \"Additional Information on Eligibility\""
Archive Date Str
2026-11-12-00-00-00
Number Of Awards
10
Posting Date Str
2026-04-23-00-00-00
Create Time Stamp
Jul 07, 2026 12:24:59 PM EDT
Last Updated Date
Jul 07, 2026 12:24:58 PM EDT
Response Date Str
2026-08-06-00-00-00
Estimated Funding
50000000
Top Agency Details
Code
DOE
Seed
DOE
Agency Code
DOE
Agency Name
Department of Energy
Top Agency Code
DOE
Agency Address Desc
Click to email contact
Agency Contact Desc
ARPA-E CO arpa-e-co@hq.doe.gov
Agency Contact Name
Advanced Research Projects Agency Energy
Agency Contact Email
arpa-e-co@hq.doe.gov
Agency Contact Phone
2022871878
Create Time Stamp Str
2026-07-07-12-24-59
Funding Desc Link Url
https://arpa-e-foa.energy.gov
Funding Instruments
Id
"CA"
Description
"Cooperative Agreement"
Id
"O"
Description
"Other"
Award Floor Formatted
500,000
Funding Desc Link Desc
ARPA-E eXCHANGE
Award Ceiling Formatted
7,000,000
Agency Contact Email Desc
Click to email contact
Applicant Eligibility Desc
See Section II.A. of the NOFO.
Estimated Funding Formatted
50,000,000
Funding Activity Categories
Id
"OZ"
Description
"Opportunity Zone Benefits"
Id
"ST"
Description
"Science and Technology and other Research and Development"
Draft Mode
N
Publisher Uid
admin.arpae
Agency Details
Code
ARPAE
Seed
DOE-ARPAE
Agency Code
DOE-ARPAE
Agency Name
Advanced Research Projects Agency Energy
Top Agency Code
DOE
Original Due Date
May 28, 2026 12:00:00 AM EDT
Assist Compatible
No
Opportunity Title
High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)
Owning Agency Code
DOE-ARPAE
Top Agency Details
Code
DOE
Seed
DOE
Agency Code
DOE
Agency Name
Department of Energy
Top Agency Code
DOE
Forecast Hist Count
0
Opportunity Number
DE-FOA-0003623
Syn Post Date In Past
Yes
Synopsis Hist Count
0
Opportunity Category
Category
D
Description
Discretionary
Synopsis Modified Fields
revision, version, synopsisDesc, responseDate, createTimeStamp
Opportunity History Details
Cfdas
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Listed
L
Revision
0
Synopsis
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Version
1
Revision
0
Action Date
"Jul 07, 2026 12:24:58 PM EDT"
Action Type
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Agency Code
"DOE-ARPAE"
Award Floor
"500000"
Archive Date
"Nov 12, 2026 12:00:00 AM EST"
Cost Sharing
true
Created Date
"Apr 23, 2026 02:03:24 PM EDT"
Posting Date
"Apr 23, 2026 12:00:00 AM EDT"
Award Ceiling
"7000000"
Response Date
"May 28, 2026 12:00:00 AM EDT"
Synopsis Desc
"NOFO Number: DE-FOA-0003623 – High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)\n\nAgency Overview: \n\nThe Advanced Research Projects Agency—Energy (ARPA-E), an organization within the Department of Energy (DOE), is chartered by Congress in the America COMPETES Act of 2007 (Public Law 110–69), as amended by the America COMPETES Reauthorization Act of 2010 \n(Public Law 111–358), as further amended by the Energy Act of 2020 (Public Law 116–260).\n\nARPA-E issues this Notice of Funding Opportunity (NOFO) under its authorizing statute codified at 42 U.S.C. § 16538. The NOFO and any cooperative agreements or grants made under this NOFO are subject to 2 C.F.R. Part 200 as supplemented by 2 C.F.R. Part 910.\n\n\tARPA-E funds research on, and the development of, transformative science and technology solutions to address the energy and environmental missions of the Department. The agency focuses on technologies that can be meaningfully advanced with a modest investment over a defined period of time in order to catalyze the translation from scientific discovery into early-stage technology. For the latest news and information about ARPA-E, its programs and the research projects currently supported, see: http://arpa-e.energy.gov/.\n\n\tARPA-E funds transformational research. Existing energy technologies generally progress on established “learning curves” where refinements to a technology and the economies of scale that accrue as manufacturing and distribution develop drive improvements to the cost/performance metric in a gradual fashion. This continual improvement of a technology is important to its increased commercial deployment and is appropriately the focus of the private sector or the applied technology offices within DOE. In contrast, ARPA-E supports transformative research that has the potential to create fundamentally new learning curves. ARPA-E technology projects typically start with cost/performance estimates well above the level of an incumbent technology. Given the high risk inherent in these projects, many will fail to progress, but some may succeed in generating a new learning curve with a projected cost/performance metric that is significantly better than that of the incumbent technology. ARPA-E will provide support at the highest funding level only for submissions with significant technology risk, aggressive timetables, and careful management of associated risk.\n\n\tARPA-E funds technology with the potential to be disruptive in the marketplace. The mere creation of a new learning curve does not ensure market penetration. Rather, the ultimate value of a technology is determined by the marketplace, and impactful technologies ultimately become disruptive—that is, they are widely adopted and displace existing technologies from the marketplace or create entirely new markets. ARPA-E understands that definitive proof of market disruption takes time, particularly for energy technologies. Therefore, ARPA-E funds the development of technologies that, if technically successful, have clear disruptive potential, e.g., by demonstrating capability for manufacturing at competitive cost and deployment at scale. \n\nARPA-E funds applied research and development (R&D). The Office of Management and Budget defines “applied research” as an “original investigation undertaken in order to acquire new knowledge…directed primarily toward a specific practical aim or objective” and defines “experimental development” as “creative and systematic work, drawing on knowledge gained from research and practical experience, which is directed at producing new products or processes or improving existing products or processes.” Applicants interested in receiving financial assistance for basic research (defined by the Office of Management and Budget as “experimental or theoretical work undertaken primarily to acquire new knowledge of the underlying foundations of phenomena and observable facts”) should contact the DOE’s Office of Science. Office of Science national scientific user facilities (http://science.energy.gov/user-facilities/) are open to all researchers, including ARPA-E applicants and awardees. These facilities provide advanced tools of modern science including accelerators, colliders, supercomputers, light sources and neutron sources, as well as facilities for studying the nanoworld, the environment, and the atmosphere. Projects focused on early-stage R&D for the improvement of technology along defined roadmaps may be more appropriate for support through the DOE applied energy offices including: the Office of Critical Minerals and Energy Innovation (CMEI), the Office of Hydrocarbon and Geothermal Energy, the Office of Nuclear Energy, and the Office of Electricity.\n\n\tARPA-E encourages submissions stemming from ideas that still require proof-of-concept R&D efforts as well as those for which some proof-of-concept demonstration already exists. Submissions can propose a project with the end deliverable being an extremely creative, but partial solution.\n\nProgram Overview: \n\nTransuranic (TRU) elements—such as plutonium (Pu), neptunium (Np), and americium (Am)—are a significant source of fissile materials that are available across existing nuclear inventories and strategic reserves and have the potential to drive advanced reactor deployment. , The technical feasibility of recycling TRU elements into new fuels has been proven at the experimental scale. Advances in fabrication, safeguards, equipment design, and modeling will create the opportunity to transition from experimental success to commercial-scale deployment, enabling higher-throughput and lower-cost fuel production with real-time materials accountancy. The High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG) program will support research and development projects that deliver commercially deployable TRU fuel technologies, thereby strengthening U.S. energy security, reducing nuclear waste, and enabling long-term energy deployment for public benefit.\n\nThe HORNIG program seeks to overcome key technical and economic barriers that have historically prevented using TRU fuels in commercial reactors and to create a clear path to domestic nuclear fuel security by supporting the design, fabrication, and qualification of TRU fuels. The program will fund coordinated, multidisciplinary efforts to deliver transformative advances in fuel performance, manufacturability, cost, and regulatory readiness. Technologies developed under this program must have the potential to enable the following program metrics:\n•\tA domestic TRU fuel supply chain \n•\tA levelized cost of fuel (LCOF) = 1¢/kWh \n•\tTRU fuel qualification and regulatory acceptance within seven years\n\n\tBy enabling production of advanced reactor fuels from domestically sourced fissile materials, the program will reduce dependence on imported uranium and enrichment services, expand U.S. fuel supply options, and support establishment of a closed fuel cycle. These objectives support ARPA-E’s statutory goals of improving energy security and resilience, improving the management of radiological waste, and maintaining U.S. technological leadership in energy technologies. If successful, HORNIG will strengthen U.S. energy security and infrastructure resilience and deliver lasting public benefit through reliable nuclear power.\n\nTo view the NOFO in its entirety, please visit https://arpa-e-foa.energy.gov"
Agency Details
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Last Updated Date
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Estimated Funding
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Agency Address Desc
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Agency Contact Desc
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Agency Contact Phone
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Funding Desc Link Url
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Funding Instruments
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Award Floor Formatted
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Award Ceiling Formatted
"7,000,000"
Agency Contact Email Desc
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Applicant Eligibility Desc
"See Section II.A. of the NOFO."
Estimated Funding Formatted
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Funding Activity Categories
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Opp Hist Id
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Opportunity Title
High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)
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Description
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Synopsis Attachment Folders
Id
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Folder Name
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Zip Lob Size
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Synopsis Attachments
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Created Date
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Opportunity Id
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Last Updated Date
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Synopsis Attachments
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Search
Id
362035
Title
High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors (HORNIG)
Agency
Advanced Research Projects Agency Energy
Number
DE-FOA-0003623
Doc Type
synopsis
Cfda List
81.135
Open Date
04/23/2026
Close Date
08/06/2026
Opp Status
posted
Agency Code
DOE-ARPAE
State By
gazetteer
Cat Review
At
Jul 29, 2026
Method
openrouter
Taxonomy
construction
Categorized By
llm

Source: Grants.gov (opportunity GRANTS-362035), retrieved via the Grants.gov Search API. View the official posting — always confirm requirements and deadlines with the issuing agency.