The FY2027 President's Budget requests — for Naval Reactors Development, within Energy's Defense (050) account.
FY2025–FY2026
| Fiscal year | Basis | Amount |
|---|---|---|
| FY2025 | enacted | $835.8M |
| FY2026 | enacted | $864.6M |
Bases are separate columns and are never summed into one figure.
Energy discretionary budget authority
From the OMB Public Budget Database — clean, summable, and the figure to cite for an agency total. It is the whole of Energy's discretionary request, not a total of the parsed lines above, and this page never adds the two together.
What this funds
Naval Reactors Development resources fund work that ensures the current and future fleet is the most advanced, well-maintained, and capable nuclear fleet in the world. This funding supports unique technologies used in naval reactors that are crucial to delivering superior navy fleet operations and dominance in the maritime domain to counter the increasing threats from our adversaries. These efforts include: 1. Supporting naval operations while ensuring reactor safety by providing technical support to the fleet, engineering solutions to emergent reactor plant issues, enabling equipment replacement and maintenance, and tracking reactor performance over time. 2. Validate design assumptions made for operating ships to reduce required conservatism allowing 3. Developing and enhancing the fundamental methods, modeling, and materials used in reactor cores and plants, which reduce lifecycle costs and improves performance and reactor safety. 4. Designing and maintaining the major reactor plant components and plant systems required for 5. Providing funding for the operation of the Advanced Test Reactor (ATR) to DOE Office of Nuclear Energy and performing irradiation testing to support the operating fleet, evaluate new material systems, and develop new core designs to maintain the U.S. advantage over near-peer rivals. 6. Designing and procuring capital equipment in support of the work abo
Extracted from doe fy 2027 volume 1 nr, p. 9. Verbatim; nothing here is paraphrased. This is a different document from the one the figures above were read off — the agency prints this line's dollars in a summary table and its justification elsewhere.
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Answers come from the figures on this page and nothing else. These dollars are parsed from Energy's Congressional Justification and are approximate — confirm anything that matters against the cited page.
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