ELI5: Explain Like I'm 5

Engine-generator

An engine-generator is a machine that makes electricity. It's made up of two parts: an engine and a generator. The engine is like a big motor that runs on fuel. This fuel is usually gas or diesel. The generator is connected to the engine. It takes the energy from the engine and turns it into electrical power. This electrical power can be used to turn on lights, run machines, or power up small appliances like your phone or laptop.