How does a power generator work?

Speak to the experts Call our team on 01902 790824

or fill out the form below


A power generator is a vital piece of site equipment, whether on major construction projects or outdoor events, ensuring a continuous supply of energy. But how do they work?


A generator converts mechanical energy (rotational engine movement) into electrical power via windings channelled into power cables. Many models have a diesel or petrol engine to produce the mechanical energy.

The details of how they work is a big subject, so we’d thought we’d keep it simple.

Imagine a generator acting like a pump, pushing water through a pipe, only instead of pushing water, a generator uses a magnet to push electrons along and applies a certain amount of pressure to the electrons.

In an electrical circuit, the number of electrons in motion is called the amperage or current, and is measured in amps. The "pressure" pushing the electrons along is called the voltage and is measured in volts.

If you’d like a more technical insight into how our power generators work, contact the engineers at Morris Site Machinery who have the answers and can also advise on our range of power generators.