On-orbit Nuclear Power Concepts Workshop

The 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.

Workshop space is limited. Those who submit compliant white papers will be invited to attend based on:

1. The relevance of their submission to at least one of the six points in the requested information section above
2. Relevance to DARPA’s mission to create and prevent technological surprise for national security. 

If a prospective attendee does not have their white paper selected, feedback will be provided upon request.

The workshop will be held March 31-April 1, 2026.

Space at the event is limited. Those who submit compliant white papers to the associated Request for Information (RFI) will be invited to attend. Submissions of white papers in response to this RFI must be received by DARPA no later than 4 p.m. ET, Feb. 6, 2026.

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