Mentioned:Space Nuclear Power Corporation
DARPA has awarded Space Nuclear Power Corporation an Other Transaction Agreement under the Fast Capacitance program to advance autonomous reactor operation for national security missions. The work extends the successful 2018 KRUSTY demonstration and incorporates active control rod operation beyond the passively controlled design previously tested.
What's happening
- DARPA awarded Space Nuclear Power Corporation an OTA under the Fast Capacitance program managed by Dr. Tabitha Dodson in the Defense Sciences Office.
- SpaceNukes will design, build and conduct ground testing of a Kilopower reactor with active control rod operation, advancing beyond the 2018 KRUSTY test.
- The phased program includes design, procurement and integration gates leading to ground demonstration, with integration work at SpaceNukes' Medina, Ohio workshop.
- SpaceNukes holds a license from Los Alamos National Laboratory for Kilopower technology and will collaborate with the lab on the ground test.
Why it matters
- Autonomous reactor control is essential for space power systems that require dynamic power management and rapid response under varying operational conditions.
- Demonstrated nuclear reactor technology directly supports national security missions in space, reducing program risk for future fielded systems.
- Active control rod operation represents a technical advance that expands mission profiles beyond passive architectures, increasing U.S. industrial capability.
- This is the first full-power ground test of a new American space reactor design in over 5 decades, consolidating domestic expertise in a critical capability.
Going deeper
- The core SpaceNukes team includes David Poston (CTO) and Patrick McClure (COO) from Los Alamos National Laboratory, Marc Gibson (Chief Engineer) from NASA Glenn, and Omar Mireles from NASA Marshall.
- SpaceNukes operates facilities in Los Alamos with additive 3D printing and in Medina, Ohio with thermal and vacuum testing capabilities.
- The KRUSTY program in 2018 was performed by team members then employed by Los Alamos National Laboratory and NASA, establishing continuity of expertise.
Financial impact
- Award amount is undisclosed; structure is an Other Transaction Agreement rather than a traditional contract, allowing flexibility in execution.
- Timing not disclosed for design completion, procurement, integration gates or the ground demonstration event.
- The phased program structure with multiple gates will trigger milestone payments as hardware is produced and integrated, though specific obligation schedules are not disclosed.
The intrigue
- The inclusion of active control rod operation signals DARPA's intent to move beyond demonstration toward operationally deployable nuclear power systems for space, raising questions about mission profiles and accelerated timelines.
- SpaceNukes' licensing arrangement with Los Alamos National Laboratory positions the company as the exclusive commercial developer of Kilopower, but competitive space nuclear programs could emerge.
The fine print
- Contract award is an Other Transaction Agreement, which typically allows greater flexibility but may have different reporting and oversight requirements than traditional contracts.
- The program will produce both nuclear-tested hardware and engineering documentation for autonomous operation, but fielding timelines and transition to operational systems are not stated.
Source: SpaceNews · Oct 21, 2026 · Drafted with Claude, reviewed by Industrial Base Alpha.
