Carolina GSE distributes the Start Pac Green Machine, an emission-free electrical GPU. The unit is capable of starting multiple engines and powering up aircraft systems. This new patent-pending GPU is the first emission-free autonomous GPU for operators who do not have easy access to an AC power source and need a powerful solution to jump-start their fleet of aircraft and perform maintenance on various cockpit and aircraft systems such as avionics, GPS and other high draw systems, including on-board air conditioning.