The Coolspool Hybrid 300 is a truly 'green' Tier IV compliant diesel GPU capable of providing continuous power for avionics and turbine starting. Customers benefit from low operating costs, low CO2 emissions and low dBA signature. Capable of starting large turbines with its ‘Power Boost System’, the Coolspool Hybrid 300 can also operate in the hangar when the engine is switched off, and connected to 3-phase AC power.