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Special notice

On-orbit Nuclear Power Concepts Workshop

DARPA-SN-26-21

Defense Advanced Research Projects Agency, Def Advanced Research Projects Agcy. Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).

127 open like this View on SAM.gov Markdown

Response deadline

February 20, 2026

Closed 254 days ago. Posted January 12, 2026, first published December 18, 2025. Scheduled to archive September 1, 2026.

Get the next one like this from Defense Advanced Research Projects Agency by email, the day it is posted.Find my opportunities

This one closed in 2026

127 like it are open now in research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology)

All 127 open in research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology)

Description

As published on SAM.gov.

The Defense Advanced Research Projects Agency (DARPA) Tactical Technology Office (TTO) is requesting information regarding technologies, spaceflight qualification testing, safe handling, and applications for on-orbit satellite nuclear power systems. Our focus is on producible, cost-effective nuclear reactors – not bespoke designs suited for a one-time demonstration.

DARPA TTO and the Department of Energy (DOE) will also hold a workshop to establish a common understanding of on-orbit nuclear power technology and challenges, facilitate community interactions and collaboration, and identify key technology risk areas that, if addressed, would enable practical implementation of on-orbit nuclear power. The workshop will be held on April 21-22, 2026 at the DARPA Conference Center (DCC), 675 N Randolph Street, Arlington, VA 22203.

Attachments

Files listed on SAM.gov. The ones we hold a copy of download from here; the rest open SAM's download, which needs no account.

Publications

Every notice SAM.gov issued under this solicitation number, oldest first. Each is a separate record on SAM.

  1. December 18, 2025

    Special notice

    Due February 6, 2026. SAM.gov, notice 3174ed2272e04af08aa369daea9b2342

    2 revisions on SAM
    • January 12, 2026: publish, special notice
    • December 18, 2025: publish, special notice

  2. January 12, 2026

    Special notice

    Due February 20, 2026. SAM.gov, notice 4bc82ea5fe8941dba8f74364147d5631

    2 revisions on SAM
    • January 12, 2026: publish, special notice
    • December 18, 2025: publish, special notice

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