# High-efficiency Nitrogen Oxidation (HNO3)

Canonical: https://abierto.us/opportunities/hr001126s0005

- Solicitation number: HR001126S0005
- Notice type: Solicitation
- Status: Closed. Deadline was February 5, 2026
- Department: Department of Defense
- Agency: Defense Advanced Research Projects Agency
- Contracting office: Def Advanced Research Projects Agcy (HR0011)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AC12 National Defense R&D Services; Department Of Defense - Military; Applied Research
- First posted: December 1, 2025
- Last posted: January 5, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/c042ce9c33364335ad03c07af1abcaf5/view

## Description

The Defense Advanced Research Projects Agency (DARPA) is soliciting innovative proposals in the foundational technologies to enable high-rate, energy efficient, decentralized nitric acid manufacturing to protect critical supply chains in the defense industrial base and redefine energetics manufacturing in contested logistics environments. Proposed research should investigate innovative approaches that enable revolutionary advances in science, devices, or systems. Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice.

## Publications

- December 1, 2025: Solicitation, due February 5, 2026. Notice fb751b32a892459384c5a0abd811c1eb. https://sam.gov/workspace/contract/opp/fb751b32a892459384c5a0abd811c1eb/view
- December 19, 2025: Solicitation, due February 5, 2026. Notice ed6b4ecf50474c56997645c1ccb47e1f. https://sam.gov/workspace/contract/opp/ed6b4ecf50474c56997645c1ccb47e1f/view
- January 5, 2026: Solicitation, due February 5, 2026. Notice c042ce9c33364335ad03c07af1abcaf5. https://sam.gov/workspace/contract/opp/c042ce9c33364335ad03c07af1abcaf5/view

## Points of contact

- BAA Coordinator, HNO3@darpa.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/hr001126s0005.