Diesel generators are widely used for their reliability and durability, especially in situations where a consistent power supply is essential. However, diesel fuel can be expensive and may not be readily available in some areas. This has led many to wonder if it is possible to convert a diesel generator to run on natural gas.
The answer is yes, it is possible to convert a diesel generator to run on natural gas. However, it is not as simple as just switching out the fuel source. Converting a diesel generator to run on natural gas requires installing an adapter between the gas supply and the carburetor to combine the natural gas vapors into the air stream above the carburetor. In most cases, you do not need to modify the generator’s carburetor.
If you are considering converting your diesel generator to run on natural gas, it is important to understand the benefits, risks, and limitations of doing so. It is also important to consider the practical and cost considerations, as well as the specific generator brands that are compatible with natural gas. In this article, we will explore all of these factors and more to help you make an informed decision about converting your diesel generator to run on natural gas.
Key Takeaways
- Diesel generators can be converted to run on natural gas with the installation of an adapter between the gas supply and the carburetor.
- Converting a diesel generator to run on natural gas has benefits, risks, and limitations that should be carefully considered.
- Practical and cost considerations, as well as specific generator brands, should also be taken into account when considering a conversion to natural gas.
Understanding Generators
Generators are devices that convert mechanical energy into electrical energy. They are commonly used as backup power sources during power outages or in areas where there is no access to the electrical grid. There are several types of generators, including diesel generators, natural gas generators, portable generators, standby generators, and emergency generators.
Diesel generators are a popular choice because they are reliable and efficient. They are commonly used in remote locations where there is no access to the electrical grid. Diesel generators are also used in ships, construction sites, and other places where a reliable source of electricity is needed.
Natural gas generators are becoming increasingly popular because they are cheaper and have less of an environmental impact than traditional fuels like coal. They are also more efficient than gasoline generators and produce fewer emissions. Natural gas generators can be used as standalone units or as part of a dual-fuel system.
Portable generators are designed to be moved from one location to another. They are commonly used for outdoor activities like camping and tailgating. Portable generators are also used as backup power sources during power outages.
Standby generators are permanent fixtures that are installed outside of a home or business. They are connected directly to the electrical system and are designed to automatically turn on in the event of a power outage. Standby generators are typically powered by natural gas or propane.
Emergency generators are similar to standby generators but are designed to be used in emergency situations. They are typically smaller and less powerful than standby generators and are designed to provide power for critical systems like medical equipment and communication systems.
Types of Fuel for Generators
Generators are an essential source of power, especially in areas where electricity is unreliable or unavailable. They come in various sizes and types, and they can run on different types of fuel. The most common fuels used for generators are diesel, natural gas, propane, and gasoline. Each fuel type has its advantages and disadvantages, depending on the application and the user’s needs.
Diesel Fuel
Diesel generators are one of the most commonly used generators available on the market due to their build, versatility, and durability, enabling this type of generator to fit various needs across multiple industries. Diesel fuel is widely available, and diesel generators are more fuel-efficient than other types of generators. They are also more reliable and require less maintenance than other types of generators. However, diesel generators are noisy, emit harmful pollutants, and have a higher upfront cost than other types of generators.
Natural Gas
Natural gas generators are considered to be less dangerous to the environment in comparison with other types of fuels. Although this is a non-renewable type of energy, it burns cleaner and helps you reduce your carbon footprint. Natural gas is also widely available, and natural gas generators are quieter than diesel generators. However, natural gas generators are less fuel-efficient than diesel generators, and they require a constant supply of natural gas to operate.
Propane
Propane generators are more fuel-efficient than gasoline generators, and they emit fewer pollutants than diesel generators. Propane is also widely available and has a longer shelf life than gasoline. However, propane generators have a higher upfront cost than gasoline generators, and propane tanks are heavy and require special handling.
Gasoline
Gasoline generators are the most common type of generators used in households and small businesses. They are affordable, easy to use, and widely available. However, gasoline generators are less fuel-efficient than other types of generators, and they emit harmful pollutants. Gasoline also has a shorter shelf life than other types of fuels, which makes it less suitable for long-term storage.
Methane, LNG, and CNG
Methane is the primary component of natural gas, and it can be utilized in both gasoline and diesel engines. LNG (liquefied natural gas) and CNG (compressed natural gas) are two forms of natural gas that can be used as fuel for generators. They are more fuel-efficient than diesel and gasoline generators, and they emit fewer pollutants. However, they require special storage and handling, and they have a higher upfront cost than other types of generators.
Conversion of Diesel Generators to Natural Gas
It is possible to convert a diesel generator to run on natural gas with the use of a conversion kit. A tri-fuel conversion kit from US Carburetion is an affordable option that allows you to switch between diesel, natural gas, and propane fuel sources. The kit typically costs around $200 and can be installed on most diesel generators.
One of the main components of the conversion kit is a fuel adapter that replaces the diesel carburetor. The fuel adapter allows natural gas to be introduced into the engine, while the diesel fuel system remains intact for backup purposes. The conversion process is relatively straightforward, and most DIY enthusiasts can complete the installation within a few hours.
However, it is important to note that there may be some efficiency issues when converting a diesel generator to run on natural gas. Natural gas is not as energy-dense as diesel fuel, which means that the generator may not be able to produce as much power when running on natural gas. However, newer and more efficient generators can overcome this problem.
In addition to the tri-fuel conversion kit, there are other conversion kits and adapters available on the market. It is important to choose a high-quality kit that is compatible with your specific generator model. Always read the manufacturer’s instructions carefully before attempting to convert your generator to run on natural gas.
Benefits of Using Natural Gas as Fuel
Natural gas can be a great alternative to diesel fuel for powering generators. Here are some of the benefits of using natural gas as fuel:
Environmentally Friendly
One of the biggest benefits of using natural gas as fuel is that it is a cleaner burning fuel than diesel. Natural gas produces fewer emissions of nitrogen oxides, sulfur dioxide, and particulate matter than diesel. This makes it a more environmentally friendly fuel option.
Cost-effective
Another advantage of using natural gas as fuel is that it is generally cheaper than diesel fuel. Natural gas prices are usually more stable than diesel prices, which can fluctuate greatly depending on supply and demand. This makes natural gas a cost-effective option for powering generators.
Quieter
Natural gas generators are also quieter than diesel generators. This is because natural gas engines run at lower RPMs than diesel engines, which produces less noise. This can be an important consideration if noise levels are a concern, such as in residential areas.
Sustainable
Natural gas is a sustainable fuel source, as it is produced from organic materials such as decomposing plant and animal matter. This means that natural gas can be replenished over time, unlike fossil fuels such as diesel.
Risks and Limitations
While it is possible to convert a diesel generator to run on natural gas using a tri-fuel conversion kit, there are a few risks and limitations to consider.
Limits
One of the main limitations of converting a diesel generator to run on natural gas is the power output. Natural gas has a lower energy density than diesel, which means that a diesel generator converted to run on natural gas will produce less power. This can be a problem if the generator is being used to power critical equipment or in emergency situations.
Fire Hazard
Another risk to consider when running a generator on natural gas is the fire hazard. While diesel fuel is less flammable than natural gas, there is still a risk of fire or explosion if the generator is not properly maintained or if there is a gas leak.
Pollution
While natural gas is a cleaner burning fuel than diesel, it still produces air pollution and greenhouse gas emissions. This can be a concern in areas with strict emissions regulations or in situations where reducing pollution is a priority.
Emissions
When converting a diesel generator to run on natural gas, it is important to consider the emissions produced by the generator. While natural gas produces fewer emissions than diesel, it still produces carbon dioxide and other pollutants. It is important to ensure that the generator meets emissions regulations and does not contribute to air pollution.
Maintenance and Longevity
Maintaining a diesel generator is crucial to ensure its longevity and efficiency. Proper maintenance and care can significantly increase the lifespan of a diesel generator. On the other hand, neglecting maintenance can lead to frequent breakdowns and costly repairs.
The maintenance requirements of a diesel generator depend on the manufacturer’s recommendations, the generator’s age, and the frequency of use. Routine maintenance tasks include changing the oil and filters, checking the coolant levels, inspecting the battery, and cleaning the air filters. In addition, the generator should undergo annual inspections and load testing to ensure that it is functioning correctly.
While maintenance costs for diesel generators can be volatile, preventative maintenance can reduce concerns for diesel generator reliability. However, the work is often not performed and/or overlooked due to time and cost. As a result, diesel-fueled generators often require more maintenance than natural gas generators.
The lifespan of a diesel generator depends on factors such as generator sizing and preventive maintenance practices. A diesel generator can last for at least 15,000 hours to a maximum of 50,000 hours before needing servicing. With proper maintenance, portable diesel generators can last 10,000 to 25,000 hours, while stationary diesel generators can last 12,000 to 50,000+ hours. Diesel generators are incredibly durable and can last more than thirty years with frequent inspections, maintenance, servicing, and cleaning.
Emergency and Disaster Response
In emergency and disaster response situations, having a reliable source of power is crucial. Diesel generators are commonly used as backup power sources in these scenarios, as they are known for their reliability and ability to provide power for extended periods of time. However, in some situations, diesel fuel may not be readily available or may become contaminated, making it impossible to use diesel generators.
Natural gas generators can be a viable alternative in emergency and disaster response situations. They can provide a reliable source of power, and natural gas is often readily available through pipelines. Additionally, natural gas generators are known for their lower emissions compared to diesel generators, making them a more environmentally friendly option.
However, there are some considerations to keep in mind when using natural gas generators in emergency and disaster response situations. For example, natural gas pipelines may become damaged during a natural disaster, making it difficult or impossible to access natural gas. In these situations, it may be necessary to have backup fuel sources available, such as propane or diesel fuel.
It’s also important to note that natural gas generators may not be suitable for all emergency and disaster response situations. For example, in areas prone to earthquakes, natural gas pipelines may be shut off for safety reasons, making it impossible to use natural gas generators. In these situations, diesel generators may be the only viable option.
Industrial and Residential Applications
Diesel generators are commonly used in both industrial and residential settings as a reliable backup power source. However, natural gas is becoming a popular alternative due to its lower cost and cleaner burning properties. Can a diesel generator run on natural gas? The answer is yes, but with some modifications.
Industrial Applications
Industries often use diesel generators as a backup power source for critical operations. However, natural gas generators are becoming more popular due to their lower emissions and cost. Converting a diesel generator to run on natural gas can be a cost-effective solution for industries that need to reduce their carbon footprint and save on fuel costs.
Residential Applications
Residential buildings, hospitals, and other sites that require reliable backup power can also benefit from natural gas generators. Natural gas is often cheaper than diesel fuel, making it a cost-effective solution for homeowners and businesses. Converting a diesel generator to run on natural gas can also reduce emissions and noise pollution, making it a more environmentally friendly option.
Converting a Diesel Generator to Run on Natural Gas
To convert a diesel generator to run on natural gas, you will need a tri-fuel conversion kit. This kit allows the generator to run on natural gas, gasoline, and propane. The conversion process involves installing an adapter between the gas supply and the carburetor. While the initial cost of the conversion kit may be high, the long-term savings on fuel costs can make it a worthwhile investment.
Environmental Impact
When it comes to choosing between a natural gas-powered generator and a diesel generator, one of the most important factors to consider is the environmental impact. Both natural gas and diesel fuel produce pollutants when burned, including sulfur dioxide, nitrogen oxide, and mercury. However, compared to diesel fuel, natural gas emits lower levels of greenhouse gases and pollutants into the atmosphere.
According to the U.S. Energy Information Administration (EIA), diesel fuel consumption in the transportation sector resulted in the emission of about 472 million metric tons of carbon dioxide (CO2) in 2021, a greenhouse gas. On the other hand, natural gas is considered a cleaner fossil fuel with a lower carbon footprint.
While diesel generators have traditionally been viewed as providing more power and longevity, natural gas generators are becoming increasingly popular due to their lower environmental impact. The EPA recognizes this in their relatively relaxed guidelines regarding natural gas generators.
Innovations such as variable injection timing, rail fuel injection, and better configurations of combustion chambers have produced the dual benefits of decreased greenhouse gas emissions and the ability to put out more power with less fuel. Better fuel economy also means more savings for operators.
Practical Considerations
When considering whether to convert a diesel generator to run on natural gas, there are several practical considerations to keep in mind.
Availability and Storage
One of the main advantages of using natural gas as a fuel source is its availability. Natural gas is widely available through pipelines, making it easier to access than diesel fuel. However, if you plan to use a natural gas-powered generator in a remote location, you may need to consider how you will transport and store the fuel.
Noise and Emissions
Natural gas generators tend to be quieter and produce fewer emissions than diesel generators. This can be an important consideration if you plan to use the generator in a residential or urban area.
Load and Portability
Natural gas generators are available in a range of sizes and can be used for both standby and prime power applications. If you need a portable generator, it’s important to consider the weight and size of the unit, as well as its fuel consumption and run time.
Installation and Monitoring
When installing a natural gas generator, it’s important to work with a qualified installer who can ensure that the unit is properly connected to the gas supply and that all safety protocols are followed. It’s also important to monitor the generator’s performance and maintain it regularly to ensure optimal efficiency and reliability.
Energy Density and Power Grid
One of the main disadvantages of natural gas as a fuel source is its lower energy density compared to diesel. This means that natural gas generators may not be able to produce as much power as diesel generators of the same size. Additionally, if you plan to use a natural gas generator as a backup power source for your home or business, you may need to consider how your local power grid will handle the additional load.
Carburetor, Valve, RPM, Spark Plug, and Throttle Body
When converting a diesel generator to run on natural gas, you will need to install an adapter between the gas supply and the carburetor. The adapter combines the natural gas vapors into the air stream above the carburetor. In most cases, you do not need to modify the generator’s carburetor. Additionally, you may need to adjust the valve timing, RPM, spark plug gap, and throttle body settings to ensure optimal performance.
Cost Considerations
When considering whether to convert a diesel generator to run on natural gas, cost is a major factor to take into account. While natural gas is often cheaper than diesel fuel, the cost of conversion and installation of the necessary adapter must also be considered.
According to R&T Power Systems, running a generator on natural gas will cost anywhere from $0.02 to $2.41 per hour, depending on the generator’s load. However, it is important to note that this cost can vary greatly depending on the price of natural gas in your area.
In addition to the cost of fuel, the cost of conversion must also be factored in. The cost of the adapter needed to convert a diesel generator to run on natural gas can range from a few hundred to a few thousand dollars, depending on the specific model and brand.
Despite the initial cost of conversion, natural gas can still be a cost-effective option in the long run, especially for those who plan to use their generator frequently. However, it is important to carefully consider your budget and the cost of conversion before making a decision.
Specific Generator Brands
When it comes to converting diesel generators to run on natural gas, there are several brands that offer tri-fuel conversion kits. These conversion kits are designed to make the process of switching from diesel to natural gas as seamless as possible. Here are a few brands to consider:
- Generac: Generac is a well-known brand in the generator industry, offering a range of models for residential, commercial, and industrial use. They also offer tri-fuel conversion kits for their diesel generators, allowing them to run on natural gas, propane, or gasoline. These conversion kits are designed to work with Generac’s industrial power generators, making them a reliable option for businesses and organizations.
- Generac Industrial Power: Generac Industrial Power is a division of Generac that focuses specifically on providing backup power solutions for industrial and commercial applications. They offer a range of diesel generators that can be converted to run on natural gas with their tri-fuel conversion kit. These generators are designed to provide reliable power in even the most demanding environments, making them a popular choice for businesses and organizations that need backup power.
Frequently Asked Questions
Can a diesel generator be converted to run on natural gas?
Yes, it is possible to convert a diesel generator to run on natural gas. However, it requires installing an adapter between the gas supply and the carburetor.
Is it possible to convert a diesel generator to run on natural gas?
Yes, it is possible to convert a diesel generator to run on natural gas. However, it requires installing an adapter between the gas supply and the carburetor.
What is the cost of converting a diesel generator to run on natural gas?
The cost of converting a diesel generator to run on natural gas varies depending on the generator model and the type of conversion kit used. On average, the cost of a conversion kit ranges from $200 to $1,000.
Are there conversion kits available to convert a diesel generator to run on natural gas?
Yes, there are conversion kits available in the market that can convert a diesel generator to run on natural gas. These conversion kits are designed to work with specific generator models and can be purchased from authorized dealers.
Do Cummins generators have the capability to run on natural gas?
Yes, Cummins generators have the capability to run on natural gas. However, it requires installing a conversion kit that is specifically designed for Cummins generators.
How does the fuel efficiency of a diesel generator compare to that of a natural gas generator?
The fuel efficiency of a natural gas generator is generally higher than that of a diesel generator. Natural gas is a cleaner fuel and burns more efficiently, resulting in lower fuel consumption and lower emissions. However, the initial cost of a natural gas generator is usually higher than that of a diesel generator.
