The “16U4SBSP” mission concept is a fundamental technology demonstration step for the realization of kW-/MW-/GW-scale Space-Based Solar Power (SBSP) based on flight formation, a distributed or aggregated swarm of small satellites contrary to conventional concepts of monolithic giant SBSP satellites. In this mission, a swarm of 16U CubeSats collaboratively supply wireless power via Radio-Frequency waves to end-users in different locations on the ground, for instance to provide backup power for emergency situations, and also for space-to-space commercial use-cases.