1. To practically confirm the theoretical work (simulations) performed in previous CMG studies
2. To validate the viability of using CMG’s as actuators on a microsatellite in a practical way
3. To confirm the agility and power efficiency that CMGs can potentially provide to microsatellitesCMG systems are considered to be in the literature more efficient devices from an electrical power point of view, than current actuators such as reaction/momentum wheels (RW/MW). Thus it becomes important to measure the electrical power consumption of a CMG system. These measurements are presented in this paper and then compared to two of SSTL's RWs. These RWs are currently operational and in orbit: SSTL's minisatellite UoSAT-12 RW and Tsinghua University's Tsinghua-1 microsatellite RW. CMGs are shown to have a potential performance advantage over RW/MW, for spacecraft with agile requirements.