Generators: How Do They Work?

July 20, 2022
Generator Installation in De Soto, MO

Generators are crucial in the absence of a power grid connection. They may act as a standby power source, keeping important systems functioning at residences and businesses. So, how exactly do generators function?

Production of Energy

Generators do not actually generate power. They turn heat-generated or mechanical energy into electrical energy. This is done by transferring electrons from an external source via an electronic circuit. Therefore, a generator is simply a reverse-running electrical motor.

Portable vs. Whole-House Generators

Portable generators are often lighter and more compact than whole-house generators. It may be used to power a few small household appliances during a power outage, but not all at once.

Home generators, often known as backup/standby generators, are long-term investments. They are linked to the fuel supply, such as propane tanks or natural gas pipes, as well as your house or business’s electrical system.

The Basic Parts of a Generator

Although contemporary electric generators come in various forms, their underlying processes are similar. The following is an overview of the essential parts of an electric generator.


It provides power to the generator. The capacity of a generator to create electricity is determined by the output of the engine.


This is the part where mechanical energy is turned into electrical energy. The alternators’ sections, known as “genheads,” operate together to produce the electromagnetic power and electron movement required to generate electricity.

Fuel System

This system allows the generator to create the appropriate amount of energy. Impurities are removed by a gasoline filter before they reach the engine, and fuel is fed into the burning chamber via an injector.

Power Regulator

This part helps in the regulation of the voltage of the generated power. It also switches the power from AC to DC as needed.

Ventilation System

Generators generate a great deal of heat. Hence, they use cooling systems to prevent overheating. The exhaust system guides and disposes of operating waste.

Lubrication System

A generator is made up of multiple small, moving pieces. It is crucial to properly lubricate them with engine oil for ongoing, trouble-free operation and to prevent excessive wear.

Battery Charger

The generator is powered by batteries. The battery charger, a completely automated component, maintains the battery by giving it a steady low-voltage level.

Control Panel

The control panel regulates the functioning of the generator, including starting, operating speed, and outputs. Modern electronics may also detect power fluctuations or interruptions and automatically start or stop the generator.


All generators, whether portable or fixed, have a body for the protection of inner components. It also helps in earthing the produced electricity, which is essential for safety.

Knowing how generators operate will assist you in selecting the ideal generator for your requirements.

De Soto Electrical Products has led the heating and cooling sector in De Soto, Missouri, for a long time. We are delighted to be active members of the communities we serve as a locally owned and run business. We provide everything, including HVAC and home electrical services. We also install backup generators to guarantee that your house always has electricity. Learn more about our services by giving us a call if you are having any electrical problems in your house.

company icon