The necessity for reliable and efficient power generation in future space exploration missions is paramount, particularly in environments where solar energy is inadequate. Solid Oxide Fuel Cells (SOFCs) emerge as a compelling solution, exhibiting high efficiency, fuel flexibility, and a long operational lifetime. Their capacity to function with hydrocarbons and in situ-derived fuels renders them especially well-suited for long-duration missions. This publication provides an overview of the ESA-funded SOCRATES project, which is investigating the adaptation of terrestrial SOFC technology for space applications in the frame- work of Voyage 2050 and the exploration of Saturn’s moon Enceladus.