What does the GPU stand for in aviation ground support?

In aviation ground support, GPU stands for Ground Power Unit. This equipment is essential for providing electrical power to an aircraft while it is on the ground, particularly when the engines are not running. The Ground Power Unit supplies the necessary voltage and amperage to support various functions in the aircraft, such as powering onboard systems, lighting, air conditioning, and other electronic equipment. Utilizing a GPU helps to conserve fuel and reduce emissions, as it allows aircraft to rely on external power rather than starting engines solely for ground operations. This is particularly important during boarding and maintenance procedures when continuous electrical power is needed without running the engines.