Applications and power ranges of GENSF units
Space Nuclear Fission Powers Systems

Space-based fission power generators (SPPGs) are small nuclear power reactors with an output ranging from a few kilowatts to a few megawatts, designed to operate in outer space or on the surface of celestial bodies (such as the Moon or Mars). They therefore harness the energy released by the fission of ²³⁵ U nuclei via neutrons, which is then converted into electrical energy.

GENSF systems are used in applications where they offer advantages—particularly in terms of mass and size—over solar photovoltaic generators coupled with rechargeable batteries or regenerative fuel cells (see [BN 3 122] ). This is the case when solar illumination is insufficient due to the distance from the Sun (deep space exploration) or its prolonged occultation...