Choosing between a gasoline or diesel generator is usually the first thing people think about when purchasing a new generator or replacing their old one. We’ll review the benefits and drawbacks of each engine type below and advise on which one is best for your particular requirements.

Benefits of Diesel Generators

Extremely Fuel-efficient

The fuel efficiency of Able diesel generators is one of their main benefits. Compared to a gasoline generator operating at the same capacity, they are 50% more fuel efficient because they burn fuel using compression heat instead of spark ignition. Because of this, diesel generators are a more economical and fuel-efficient choice, particularly when used continuously and heavily.

For instance, depending on the load, a 120kW diesel generator can use 10.9-32.1 liters of fuel per hour, significantly more efficient than a gasoline generator.


Diesel generators are more affordable than gasoline-powered ones since they burn 50% more slowly than gasoline generators. Thanks to this, they can run for a long time and function effectively as backup generators during blackouts.

A Longer Lifespan

With a lifespan of approximately 15,000 hours, diesel generators outlast gasoline generators, which typically have a shelf life of only 2,000 hours. These figures may differ based on things like proper sizing and generator upkeep. That said, a diesel generator with fewer internal components will require less thorough and regular maintenance.

Perfect for Heavy-duty, Extended Use

Diesel generators have a higher compression rate and require less fuel. They are a cost-effective choice for people in the hardworking mining, construction, and agriculture industries because of their ability to consistently lower operational expenses and improve your bottom line. Also, diesel is self-lubricating; thus, with regular use, the fuel distribution system is more durable than gasoline.

Diesel is Not as Combustible as Petrol

Diesel is far safer to transport and store than gasoline because of its stability. Diesel is still combustible, but it doesn’t catch fire as quickly. Its shelf life is also greater than that of gasoline.

Diesel Generator Drawbacks

  • Firstly, diesel generators are usually larger than their gasoline equivalents due to their higher power output, making them more expensive. In addition to the high cost of the generator itself, diesel fuel may be more expensive than gasoline in some areas.
  • Secondly, standard diesel generators are usually larger and require a more extensive installation; as a result, moving them is not as simple. They even need expert assistance to set up correctly. Nevertheless, some portable diesel generators allow you to move the generator from place to place even though they are still heavier than their gasoline-powered counterparts. This is the ideal compromise when diesel power is the only alternative available.

Generally, diesel generators are usually a better option for installations needing more power because of their size and output. This entails providing backup power to vital locations like government offices, restaurants, and hospitals. Here are some common questions about diesel generators:

Can a House Run On a Diesel Generator?

Yes. A diesel generator should be more than capable of providing power for an entire home because it can manage huge loads like heavy machinery and portable construction equipment. Consider factors like the load capacity of the generator and the appliances, lights, and other items you plan to power in your house when selecting your generator. Diesel generators are more powerful and efficient even though they produce more noise when operating.

Why Do Diesel Generators Lack Inverters?

Diesel generators are built to generate a lot of power; their bigger fuel tanks allow them to do so.Because inverter generators use less fuel to produce energy, they are more energy-efficient and less powerful. Therefore, inverters work best with less power and are inappropriate for diesel generators.

Benefits of Petrol Generators

More Compact and Portable

Petrol generators are usually lighter, more portable, and more compact than diesel generators. They are, therefore, ideal for consumers who need a power supply that is portable and simple to set up at a trade site, house, or campground.

Gas is Cheaper

Filling your generator’s tank with petrol will be less expensive than using diesel at the pump.

Silent Function

Compared to diesel generators, petrol generators run at a lower decibel level.Because of this, they are the best option for usage in neighborhoods, campers, and other places where noise pollution is an issue.

Excellent for Sporadic or Short-term Use

With petrol-powered generators, the generator and the fuel are less expensive upfront. Therefore, a petrol generator is a more sensible and affordable choice if you plan to use your generator for the occasional weekend getaway or odd jobs around the house or work.

Petrol Generator Drawbacks

  • Petrol generators are more likely to experience problems that need maintenance or part replacements because they are manufactured with a spark ignition mechanism.
  • In addition to the potentially high maintenance expenses, the typical durability of a gasoline generator is comparatively less than that of a diesel generator, necessitating replacement, which can be expensive.
  • Although gasoline is less expensive than diesel, the fuel efficiency of a gasoline generator is significantly lower, meaning that you will use up the fuel more quickly. This means you’ll need to replace it more frequently, and gasoline is more explosive, so you must remove any leftover fuel to store it safely.

Generally, petrol-powered are smaller and frequently utilized for professional job sites or household appliances.

Which One is Ideal for Your Needs?

Diesel generators are perfect for demanding applications and circumstances requiring steady, dependable power. They are ideal for prime and standby applications on building, mining, industrial, and agricultural sites, especially in cases where grid access is erratic or nonexistent. When properly maintained, diesel engines are also known for their longevity and durability, offering dependable power for many years.

In contrast, petrol-powered generators are perfect for light-duty, leisure, and small-scale trade uses like traveling by caravan or camping. Petrol generators are often better suited for short-term, sporadic use or low-load power requirements since they produce less noise pollution.

The bottom line is that your ideal choice depends upon your requirements and the intended use of the generator.