ISISPACE’s line of power systems for CubeSats and small satellites is based on a our experience with CubeSats since the the early days of the company and the work done on the Delfi-C3 satellite of Delft University of Technology. Following a number of satellite missions where ISISPACE used third party power systems for their CubeSat missions it was decided to develop our own range of power system products given the key role these systems play in any satellite mission.