Silicon Carbide Cladding Development | DE FOA 0002662

Opportunity Information: Apply for DE FOA 0002662

The Department of Energy (DOE), through its Idaho Field Office, issued this discretionary funding opportunity (DE FOA 0002662) to advance accident tolerant fuel (ATF) technology for light water reactors (LWRs), with a specific focus on developing silicon carbide (SiC) ceramic matrix composite cladding. The program traces back to Congressional direction and funding provided in the 2012 Consolidated Appropriations Act, which accelerated DOE research and development efforts after the Fukushima Daiichi accident highlighted the consequences of extended loss of cooling and the need for improved nuclear fuel safety margins. In practical terms, the opportunity is meant to push promising ATF concepts beyond early research and closer to real-world deployment, with DOE explicitly aiming for commercial implementation of one or more advanced LWR fuel concepts in the late 2020s.

The core technical objective is to develop and mature a non-metallic cladding option that can be used in existing LWR designs without requiring major changes to reactor geometry or hardware. All ATF concepts under DOE oversight are constrained by the need to fit into current reactor configurations, meaning the fuel must remain compatible with existing assemblies and operating envelopes. At the same time, the advanced cladding should significantly improve coping time during severe accidents, particularly scenarios involving loss of active cooling, while maintaining or improving performance during normal operations. This emphasis reflects a dual goal: better safety under extreme conditions and no penalty (or ideally, a benefit) to everyday fuel reliability and economics.

Silicon carbide ceramic matrix composite cladding is highlighted because it offers a different behavior than conventional zirconium-based metal cladding, especially at high temperatures. In severe accident conditions, zirconium reacts with steam and produces hydrogen, which can exacerbate accident consequences. SiC-based composites, being non-metallic, have the potential to tolerate higher transient temperatures and reduce hydrogen generation compared to traditional cladding, supporting the overall ATF safety enhancement goals. The opportunity recognizes, however, that SiC cladding is not simply a material substitution; it comes with major manufacturing and development hurdles. That means proposed work is expected not only to demonstrate performance advantages, but also to tackle the practical challenges of producing SiC composite cladding at the quality, consistency, and scale needed for nuclear fuel supply chains and eventual commercial use.

From a program and funding standpoint, DOE planned to make one award using a cooperative agreement, which typically implies substantial DOE involvement during the project rather than a hands-off grant. The award ceiling was listed at $45,000,000, with an expectation of a single recipient or lead organization coordinating the effort. Eligibility was described as unrestricted (open to any entity type), subject to any additional eligibility details in the full announcement. The funding activity category is energy, and the assistance listing is CFDA 81.121. The opportunity was created on December 17, 2021, and originally closed on February 11, 2022.

The broader policy rationale is that while nuclear utilities and fuel vendors would ultimately be the end users of any successful SiC cladding product, DOE views government support as important for early research, development, and deployment activities because the work supports continued use of low-carbon electricity with enhanced safety, which is framed as being in the public interest. If successful, the expected outcome is not just a laboratory demonstration but a commercially viable cladding technology that can be used in both existing and future nuclear power plants, strengthening accident tolerance while sustaining or improving operational fuel performance.

• The Department of Energy, Idaho Field Office in the energy sector is offering a public funding opportunity titled "Silicon Carbide Cladding Development" and is now available to receive applicants.
• Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 81.121.
• This funding opportunity was created on Dec 17, 2021.
• Applicants must submit their applications by Feb 11, 2022. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
• Each selected applicant is eligible to receive up to $45,000,000.00 in funding.
• The number of recipients for this funding is limited to 1 candidate(s).
• Eligible applicants include: Unrestricted (i.e., open to any type of entity above), subject to any clarification in text field entitled Additional Information on Eligibility.

Apply for DE FOA 0002662

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