The generator equipped with the Dual Fuel System can use both gasoline and liquefied propane/butane as an energy source. The gas is almost completely oxidized in the engine's combustion chamber, resulting in lower toxic emissions during operation and extending the engine's lifespan by up to 1.5 times. The generator is capable of operating during a power outage with an automatic transfer switch. The enlarged fuel tank with a capacity of 30 liters allows for operation of up to 17 hours on a single tank. The tank is coated with a special matte finish that is resistant to corrosion and chemicals. An integrated display allows for monitoring of the fuel level. The GDA 7500DFE is designed for connecting single-phase consumers with a total power of up to 6500 W.