Diesel Generator Fuel Consumption Guide

From fuel savings to lower ownership costs, a highly efficient generator offers numerous advantages for users. So, when buying a diesel generator, fuel efficiency should be one of your top priorities.

Here, we’ll look at how efficient diesel generators are and give you a general guide to their fuel consumption.

How Efficient Are Diesel Generators?

Diesel generators are typically more fuel efficient than petrol models. In fact, diesel generators have the best thermal efficiency of any internal combustion generator engine.

They use compression heat rather than spark ignition to burn fuel, allowing for more efficient generation of power, especially for continuous and heavy duty use.

The efficiency of diesel generators is expressed as their fuel consumption on a litre per hour basis. As a general rule, diesel generators use 0.4 litres of fuel for every kWh produced, which equates to an efficiency ratio of 25%.

Learn more about the best diesel generators for your power requirements here.

For a general guide on diesel generator fuel consumption, see the chart below:

Note: This table should be used as an estimate only.

Factors That Influence Fuel Consumption

There are many factors that will influence your diesel generators fuel consumption. These include:

• Size of the generator
• The load amount
• Generator brand
• Number of items the generator is powering