Can A Diesel Generator Run On Natural Gas? Answered

A few straightforward steps will enable you to understand Can A Diesel Generator Run On Natural Gas? Many people utilize diesel generators as a source of emergency electricity. Although they can be expensive to operate, they are dependable and effective.

A diesel generator can be converted to run on natural gas to save money and have a cleaner burning fuel. Natural gas can be less expensive to run a generator on than diesel and burns cleaner.

In most engines, natural gas is an excellent substitute for diesel. Diverting LNG and CNG is not possible. If an old generator is converted, propane can be used as an energy source. At just three thousand rupees, diesel buses can be converted into diesel-compressed natural gas vehicles.

Long routes can be traveled on natural and liquefied natural gas, but only municipal buses and educational facilities can use compressed natural gas. For about $1,500, a diesel engine must be entirely changed to convert an automobile to run on diesel.

A spark plug must be placed into a diesel fuel injector aperture in a cylinder head, a throttle body must be installed, a throttle body adaptor must be installed, and a throttle valve must be installed to convert a diesel engine to a natural gas engine.

Typically, a 5-kilowatt generator will use 0.75 gallons of gasoline every hour. According to the US Department of Energy, the average price of gas in the US in July 2018 was $2.89 a gallon. A portable generator would need 18 gallons of fuel to run for a day, which would cost about $52 per day.

Can A Diesel Generator Run On Natural Gas?

Bi-fuel generators minimize the drawbacks of using diesel and natural gas fuels while offering end customers the benefits of both. The engine is started with diesel fuel and switches to a mixture of diesel and natural gas when the load is applied.

Diesel Generator Run On Natural Gas

Although the bi-fuel mode only uses a tiny portion of complete diesel operation, diesel fuel is still required to maintain the natural gas ignite. Utility-supplied natural gas offers longer run times, which can be advantageous during severe weather or other situations where the diesel fuel supply may be hampered.

According to Mark Sweeney, Business Manager-North Central, Generac Industrial Power, “the standard diesel governing system works continuously; during rapid load fluctuations, diesel instantly becomes the dominant fuel, so the system behaves just like a typical diesel generator.”

Bi-fuel generators also cost less to manage diesel fuel. The use of ultra-low sulfur diesel (ULSD) is required in all standby generator applications due to new EPA regulations aimed at decreasing emissions from diesel engines.

Because ULSD goes through more refinement steps, it is less stable than conventional diesel fuel. More frequent fuel polishing is needed to prevent fuel from deteriorating and clogging the engine filters. Bi-fuel generators require less on-site storage of diesel fuel, which lowers expenses.

Additionally, reliability is increased because the system still uses on-site diesel fuel. The generator can function entirely on diesel fuel if the natural gas supply is cut off. No power will be lost as the system switches instantly and flawlessly to 100% diesel operation.

The on-site fuel requirements for emergency systems, as outlined in National Electric Code 700 and National Fire Prevention Association (NFPA) 110, are met by Generac Bi-FuelTM generators. Less diesel fuel on-site often means more straightforward permits, and internal fuel systems with NFPA or local code capacity limits become an alternative.

According to Sweeney, Generac is the only manufacturer offering bi-fuel backup generators straight from the factory, offering the crucial benefits of factory testing and a factory warranty.

Other manufacturers must install third-party after-market equipment in their generators to convert them to bi-fuel, which can cause issues. The issue of accountability arises if the generator experiences any problems.

The market has demonstrated a substantial interest in goods that burn naturally clean natural gas as an alternative to diesel solutions. Bi-fuel generators provide the market with another viable fuel option by using up to 75% clean-burning natural gas.

Despite being extremely clean in many ways, natural gas combustion does increase CO emissions. An oxidizing catalyst built into the generator’s muffler is used in Generac Bi-FuelTM units to eliminate this extra CO.

Additionally, Generac ensures that the Bi-FuelTM units are fully compliant with EPA emission limits, including CO emissions. With this factory-verified method, clients are guaranteed to avoid EPA compliance problems that could arise with third-party after-market equipment that doesn’t adhere to a similar procedure.

How To Switch From Diesel To Natural Gas In Your Generator?

Diesel generators can be made to run on natural gas. The quality of the natural gas, the output of the original diesel engine, and the needed pollution limits all play a role in how powerful the engine will be after conversion.

Fuel adapter kits are an adaption rather than a long-term conversion. The simplest, least cheap, and least labor-intensive way to switch from diesel to natural gas is with fuel adaptor kits.

Diesel engines typically need additional parts and mechanical adjustments when converted to natural gas. A converter kit will be fitted on the diesel generator to change it from a diesel engine to a natural gas engine.

How To Switch From Diesel To Natural Gas In Your Generator

Anytime you choose, you may change your diesel generator to run on propane, natural gas, or gasoline, but you’ll need a Tri-Fuel Conversion Kit from US Carburetion. The price of this tri-fuel conversion kit is around $200.

Long-term benefits from diesel to natural gas engine conversions make this worthwhile. For the fuel conversion, you’ll need essential equipment like screwdrivers, wrenches, a socket set, and Teflon seal tape.

Almost any hardware store will sell this tape. Depending on your mechanical prowess, the change could take a few hours. It is safer to hire an experienced professional to conduct the installation for you if you need to gain the necessary engine skills or are not adept in that area.

Can My Generator Be Converted To Natural Gas?

An adaptor that enables you to operate both natural gas and gasoline simultaneously is part of the Natural Gas Conversion Kit. You can now power generators with the same fuel source because most households utilize low-pressure natural gas to heat their interiors and their ovens, stovetops, and grills.

You can run your generator at home by using the natural gas output from your house and a few new parts. By obtaining a conversion kit or putting one together, you can convert your portable generator to run on gas. Online retailers offer conversion kits, although prices vary slightly.

Can My Generator Be Converted To Natural Gas

You will save money on fuel and be able to use natural gas in power outages if you move from gasoline to it. If you don’t require a conversion kit, you can still successfully convert your generator without buying one. Natural gas is a safer, more effective, and more affordable substitute for coal.

Consider a diesel-powered standby if you’re searching for a generator that can run on gasoline and diesel fuel. The fact that these generators are made expressly to run on diesel fuel makes them the perfect choice for those who want complete independence from the power grid.

Additionally, most gas pressure regulators for backup electrical generators come with their second stage, negating the need for a separate purchase.

Can LNG Be Converted From A Diesel Engine?

New parts and certain mechanical adjustments are often needed to convert diesel engines to run on natural gas. Complete overhauls of diesel engines are followed by conversion to natural gas (CNG, liquefied natural gas, or RNG) engines.

When using natural gas, a diesel engine cannot be started. The method by which diesel engine fuel ignites is compression. At-home conversion of a diesel generator to a natural gas generator is possible. You must first connect the gas supply to the carburetor before attaching it.

Before requiring significant maintenance, a diesel engine can go between one and two million kilometers. Both natural gas (NGL) and compressed natural gas (CNG) are suitable fuels for diesel engine conversion. Lower operating costs and lower emissions are the two main benefits of natural gas vehicles (NGVs) over conventional automobiles.

Both gasoline and diesel engines may use CNG. In India, where it costs far more than diesel fuel, it is only available for petrol engines. Due to cheaper fuel taxes, LPG is typically half as expensive as conventional gasoline.

Each fuel type has benefits, but liquefied natural gas stands out. Diesel exhaust is more pungent-smelling and releases more pollution than gasoline exhaust. Therefore, it is the perfect carrier for engines that cannot coexist.

Which Generator, A Diesel Or A Natural Gas One, Is Better?

In contrast to a gas generator, a diesel generator doesn’t have a carburetor and instead generates power by compression. Diesel generators are more efficient since they last longer and consume less fuel.

Due to an old power grid and increased extreme weather events over the past years, there have been more power outages. If you use these generators, your primary fuel source options are diesel or natural gas.

Long-term ownership costs for natural gas generators will be lower, and in most cases, even after a set period. TCO is calculated using the following formula: installation costs, decommissioning costs, maintenance costs, and fuel costs.

The cost of owning a car is the highest of all ownership costs. You can genuinely generate money with a generator’s Demand Response feature. When there is insufficient power in your neighborhood, utilities might use a remote access application to access your generator remotely.

Because natural gas is both inexpensive and environmentally friendly, using it will result in lower energy costs. It is an excellent option for powering homes and businesses because it is frequently available and its price is stable.

Compared to diesel use, using natural gas results in a 30% reduction in greenhouse gas emissions. If you want to lessen your carbon footprint, natural gas is a reasonably priced and ecologically friendly energy source that is well worth consideration.


Did you read Can A Diesel Generator Run On Natural Gas? You can significantly lower fuel expenditures if you switch your diesel generator to run on natural gas. By switching from diesel fuel to effective, cleaner-burning natural gas, a converted diesel generator will increase sustainability and increase the amount of time it can run during an emergency.

Generators powered by natural gas are a common and effective source of electricity today. Natural gas generators can power both standby and portable generators. Among non-renewable resources, natural gas is regarded as one of the most efficient and cost-effective fuels.

Considering all these factors, it makes sense to convert your old diesel generator to a natural gas one. There shouldn’t be any output loss with converted diesel generators because they have demonstrated performance in critical areas, including power production, load acceptance, economy, and stability.

Frequently Asked Questions

Is it possible to switch a diesel generator to use natural gas?

Energy Conversions, Inc. (ECI) has developed a dual fuel conversion technology that makes it simple to convert diesel engines into diesel-natural gas engines, obviating the need for businesses to switch over to natural gas engines.

Is it legal to use natural gas to power a generator?

Using a natural gas generator is a common and effective way to generate electricity. One of the most economical and efficient fuels among non-renewable resources for power generation, natural gas can be utilized to power both emergency and portable generators.

Should I get a natural gas or diesel generator?

For many reasons, a diesel generator outperforms its natural gas counterpart in terms of efficiency. Modern diesel engines are far quieter and easier to maintain than their predecessors, which were nevertheless much slower. It is more dependable and powerful than gasoline engines.

How long will a natural gas generator last?

Standby generators that run on propane can operate on the fuel stored in their tank for a month or more, give or take a few days. This is presuming you have a container that is the right size. If there is a natural gas supply, natural gas-powered standby generators can operate continuously.

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