What Is Dual Fuel Generator and How Does It Work?


In our electricity-dependent world, experiencing a power outage, even for a day, can result in significant losses. To prevent disruptions to business operations, having a generator on hand is invaluable. Dual fuel generators have gained popularity due to their efficiency and versatility, making them suitable for home use, recreational activities, and business purposes. In this article, we will delve into the world of dual fuel generators, exploring how they work, their advantages and disadvantages, and the distinctions between fuel generators and portable power stations.

What Is a Dual Fuel Generator?

Dual Fuel Generator

A dual fuel generator is a device designed to operate on two different fuel types, with propane and gasoline being the most common choices. Some models can also run on diesel and natural gas. Unlike bi-fuel generators that cannot use both fuel sources simultaneously, dual fuel generators offer the flexibility to use either fuel separately or in combination. This feature sets them apart as an ideal choice for those seeking to power large appliances or living off the grid.

How Does a Dual Fuel Generator Function?

Dual fuel generators incorporate two power sources to run their engines. Users have the option to utilize either fuel independently or concurrently. Operating these generators is relatively simple and straightforward. Begin by selecting the desired fuel type, filling the tank(s) accordingly, and connecting the power cable from the generator to your home.

To ensure uninterrupted power, the generator will automatically switch to the alternative fuel supply if one runs low. However, it is essential to have at least one fuel tank filled at all times to maintain magnetism in the generator coils and prevent potential issues such as difficulty restarting or fuel and oil leakage. Additionally, for safety reasons, it is recommended to operate the generator at a distance from your home to avoid exposure to toxic gas emissions, such as carbon monoxide. Regular maintenance, including checking for clogged pipes and loose wires, is crucial to minimize fire hazards and ensure optimal generator performance.

Advantages of Dual Fuel Generators

Enhanced Fuel Efficiency

Compared to single-fuel or bi-fuel generators, dual fuel generators exhibit superior fuel efficiency. Their highly efficient engines generate optimum power for every unit of fuel consumed, maximizing electricity output. This efficiency allows them to continue operating even on low fuel, resulting in cost savings in the long run.

Environmentally Friendly Performance

Dual fuel generators are more environmentally friendly than their standard counterparts, which typically run on gasoline or diesel. By utilizing cleaner fuels like propane, they significantly reduce toxic gas emissions, contributing to a greener and more sustainable energy solution.

Drawbacks of Dual Fuel Generators

Dual Fuel Generator

While dual fuel generators offer numerous benefits, they also present a few drawbacks to consider:

Gas Storage Challenges

Gasoline has a limited lifespan, making it challenging to store for prolonged periods. Stabilizers are often necessary to maintain its quality, adding to operation costs. Additionally, some states impose restrictions on gasoline storage due to fire hazards associated with its flammability.

Maintenance Needs

Maintaining dual fuel generators can be more expensive compared to single-fuel options. Regular upkeep is crucial to ensure optimal performance, including routine cleaning of fuel systems to prevent clogs and ensuring the propane tank is consistently filled. Therefore, it is essential to choose a generator with easy access to all tanks for convenient maintenance.

Portable Power Station vs. Dual Fuel Generator – Which Is Best?

The choice between a portable power station and a dual fuel generator depends on individual needs and preferences. Several factors should be considered when comparing the two:

Power Output

Portable power stations typically provide lower power outputs compared to dual fuel generators. For high-wattage requirements, such as powering energy-demanding appliances or tools, dual fuel generators are a better option.

Fuel Options

Dual fuel generators offer the flexibility to run on multiple fuel sources, including gasoline and propane. This versatility allows users to choose the most readily available or convenient fuel option. In contrast, portable power stations rely solely on rechargeable batteries and do not require fuel.

Noise Level

Dual fuel generators tend to generate more noise during operation compared to portable power stations. If noise is a concern, especially in camping or residential areas, a portable power station may be a quieter alternative.


Designed with mobility in mind, portable power stations are lightweight and easy to carry. This feature makes them ideal for outdoor activities or situations where portability is crucial. Dual fuel generators, on the other hand, are generally larger and heavier, often requiring handles or wheels for transportation.


Dual fuel generators that run on gasoline produce exhaust emissions, which may be a consideration for those prioritizing clean and environmentally friendly solutions. Portable power stations generate zero emissions as they rely solely on battery power.


Dual fuel generators necessitate regular maintenance, including refilling fuel, changing oil, and replacing spark plugs. In contrast, portable power stations, powered by batteries, generally require less maintenance.


Dual fuel generators typically have higher upfront costs compared to portable power stations. It is also essential to consider ongoing fuel costs for dual fuel generators. Portable power stations may have a higher initial investment, but their operating costs are generally lower due to not requiring fuel.

Why Consider Anker?

The Anker PowerHouse 767 offers several compelling features that make it an excellent choice for various applications. Based on the provided information, here’s why you should consider choosing the Anker PowerHouse 767:

Long-Lasting Technology (InfiniPower™)

Utilizing InfiniPower™ technology, the PowerHouse 767 boasts an efficient power management system that prolongs battery life. This ensures reliable power supply for extended periods, whether for camping, outdoor activities, or during a power outage.

High Power Output

With a capacity of 2400W and energy storage of 2048Wh, the PowerHouse 767 delivers substantial power to charge and operate multiple devices simultaneously. From laptops and smartphones to portable refrigerators and lights, it meets diverse power demands.

Expansion Battery

The PowerHouse 767 allows for the connection of an expansion battery, providing an additional 4096Wh of power. This feature expands the energy storage capacity, catering to longer durations or higher power requirements.

Solar Input

Featuring a 1000W solar input, the PowerHouse 767 is compatible with solar panels, enabling the utilization of renewable energy for recharging. This solar charging option proves especially valuable in situations with limited access to conventional power sources or during outdoor adventures.

Fast Charging System (GaNPrime™)

The GaNPrime™ fast charging system ensures a swift recharge for the PowerHouse 767, minimizing downtime. With rapid replenishment, the power station is always ready for use whenever needed.

Portability and Durability

Designed with portability in mind, the PowerHouse 767 is lightweight and easy to transport. Its durable construction withstands the rigors of outdoor environments, making it a reliable companion for camping, RV trips, or emergency situations.

TT-30 Port for RV

The inclusion of a dedicated TT-30 port for RVs enhances the PowerHouse 767’s versatility. This port enables direct connection to an RV’s power system, providing a convenient and reliable power source while on the road.

In conclusion, the Anker PowerHouse 767 combines high power output, expandability, solar charging capability, fast charging, portability, and RV compatibility. It emerges as a compelling choice for those seeking a dependable and versatile portable power station for a wide range of applications, including outdoor activities and emergency preparedness.

Final Thoughts

Dual fuel generators are designed to provide reliable and durable power solutions. With proper maintenance, they can last for several years without breakdowns, regardless of the chosen fuel type or combination. However, if you prioritize versatility and portability for your outdoor adventures, a portable power station is the optimal choice.


How Long Can a Dual Fuel Generator Run?

The duration of a dual fuel generator’s runtime typically ranges from 6 to 12 hours on a typical 20-pound propane tank. Actual runtime depends on factors such as wattage demand, the amount of fuel, and regular maintenance.

Can a Dual Fuel Generator Run on Natural Gas?

Yes, a dual fuel generator can run on natural gas, provided it is designed to accommodate this fuel source. Minor modifications might be necessary for certain generator models.

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