Diesel generators are critical for operating within the construction, mining, agricultural and commercial industries.

Whether you’re considering a diesel generator for backup power during emergencies or for prime power on a mine site, you need to take the time to choose the right model for your specific needs.

Here, we’ll break down everything you need to know before purchasing a diesel generator, and recommend 3 of our best selling models. 

4 Considerations For Choosing A Diesel Generator

With so many brands, sizes and models on the market, choosing the best diesel generator for your power requirements is not always straightforward.

To help you make an informed decision, here are some important factors to consider:

1. Your Power Output

The power requirements for a small construction site and an industrial mining operation will vary considerably, so it’s crucial to size your generator accordingly.

Overloading your generator will overheat the engine, risking low oil pressure or system failure. On the other hand, underloading your generator can cause serious strain on the engine and inefficient power production.

To correctly size a generator for your power needs, tally up the total running watts of the machinery you want to power simultaneously. Then, factor in the machine with the highest starting wattage. Keep in mind that for machinery with an electric motor, the starting output requirement can be 3-4x greater than the continuous running watts.

Note: As a rule of thumb, look for a genset with a wattage roughly 20% greater than what you need.

2. Fuel Efficiency & Run Time

Diesel generators are renowned for their fuel efficiency. However, it’s important to note that diesel generator fuel consumption and run time will vary depending on:

• The generator load
• Generator brand
• Size of the generator
• Fuel tank capacity

So, be sure to consider these factors when choosing your diesel generator. It’s always best to over-estimate rather than under estimate how long you want the generator to last.

3. Size & Transportation

If you anticipate to use your generator on multiple sites or projects, check for features like lifting eyes and forklift points to ensure it is easy transportation by truck, forklift and cane.

4. Noise Level

Diesel generators operating in cities or residential areas will need to comply with local noise restrictions. Typically, noise levels shouldn't exceed 75 dBA.

It pays to keep an eye out for noise reducing features such as sound attenuated canopies and enclosed mufflers. We also have a helpful guide on the quietest generators on the market. 

Diesel Generators Or Petrol Generators – What's Best For Me?

To determine if a diesel or petrol generator is right for you, you’ll need to consider your power requirements and the duration of usage.

Diesel generators are well-suited to heavy-duty use on industrial, construction or mining sites. Unlike petrol generators, they use compression heat rather than spark ignition to burn fuel, allowing for more efficient generation of power. This means diesel generators are more fuel efficient and don’t need to work as hard to produce the same power output.

For short-term, intermittent use on the other hand, you are unlikely to experience the cost-saving and efficiency benefits of diesel. So, if you’re looking for a generator for backup, camping or recreational use, petrol is the way to go.

Our Top 3 Diesel Generator Picks

1. For Industrial & Commercial Use – Genesys GEN22FT

With 16,000 watts of running power, the Genesys GEN22FT is particularly suited of larger loads on industrial and commercial sites, as well as backup power for small businesses and office buildings.

It comes fitted with a powder coated weather-proof canopy and water-cooled engine, allowing operation in the most demanding remote Australian conditions. The GEN22FT will also provide prime or standby power for up of 42 hours at 75% load.

2. For Rural & Agricultural Home Backup – Genesys GEN10LS

The Genesys GEN10LS is a robust diesel generator well-suited to homes with limited or unreliable access to the grid. With 8,000 watts of continuous power, it’ll comfortably provide prime or backup power for up to 36 hours at 75% load.

The generator also features a full enclosed sound proof canopy to keep noise to a minimal 62 dBA at 7m.

3. For Trade Sites – Genesys GEN6S

The Genesys GEN6S is ideal for those after an easily portable yet reliable standby power source. Its 4 stroke air cooled diesel engine delivers 10-12 hours of power on a single tank of fuel.

Producing 5,500 watts of continuous power, the GEN6S is well-suited to small trade site power needs. Its weather proof silenced canopy also ensures a low noise output of 70 dBA at 7m.

Get The Right Advice, Contact Us Today

With years of experience, you can rely on Blue Diamond Machinery to provide the right advice and a diesel generator to meet your unique requirements.

For more information on the best model to suit your power requirements, contact us today or speak to one of our expert team on 1300 998 647.