Generator Power Loss On Natural Gas (All You Need To Know)

Is it Generator Power Loss On Natural Gas possible? A typical fuel source for standby generators is natural gas. It’s practical. It is dependable. However, careful consideration must be given to installing the natural gas fuel supply to guarantee that your generator system will be dependable both during a power loss and for the duration of the generator.                                                                                                

Natural gas standby generator systems frequently fail due to improper fuel supply installation. The generator could run out of fuel and not be able to produce its maximum amount of power if the fuel supply is insufficient or unstable. It might function appropriately when there is no load but malfunction when the building’s load is applied. Sometimes it could not even turn on.

When the machinery starts up for the first time, fuel problems are frequently discovered. The generator’s natural gas fuel supply has already been installed, so if it needs to be fixed, expect additional expenditures and project delays. Here are some suggestions to make sure the installation of your natural gas generator proceeds without problems.

Generator Power Loss On Natural Gas

You should expect to pay between $0.02 and $2.41 per hour (for a generator rated at 1,000 W at 25% load and 30,000 W at 100% load, respectively) to run a generator on natural gas. Natural gas will be used in the range of 1.86 to 222.90 ft3 per hour.

Why Generator Power Loss On Natural Gas

A natural gas generator is your best buddy when there is a power outage. We must burn natural gas to produce electricity since we need access to grid power. We investigated the cost of running a generator on natural gas. Three main factors influence

  1.  a generator’s operating costs:
  2. A 20,000W generator will use more natural gas than a 5,000W generator. How much does operating a generator cost per hour be calculated using the natural gas running cost calculator? Further down, we offer tables that we determined for generator gas use.
  3. Local gas prices in your area. Natural gas prices and fuel costs for natural gas generators per kWh are connected. Example: Consider a generator that burns natural gas for $20 per thousand cubic feet instead of the identical generator that costs $10 per thousand cubic feet. The running cost per kWh for a $20 natural gas cost generator will be twice as high as that for a $10 natural gas cost generator.
  4. A generator that is loaded. Generators are operated between 0% and 100% of their maximum output wattage. The operating costs of your generator will be higher if you operate it at 60% load than if you operate it at 40% load.

This information allows us to calculate the hourly, daily, weekly, and monthly costs of operating your natural gas generator.

What Is The Price Of Running A Generator On Natural Gas?

A natural gas generator is your best buddy when there is a power outage. We must burn natural gas to produce electricity since we need access to grid power. We investigated the cost of running a generator on natural gas.

Costs for running a generator on natural gas range from $0.02 to $2.41 per hour (for a generator powered at 1,000 W at 25% load and 30,000 W at 100% load, respectively). The use of natural gas per hour will be between 1.86 and 222.90 cubic feet.

What Is The Price Of Running A Generator On Natural Gas

We created a Gas Generator Fuel Consumption Calculator that determines how much fuel any natural gas generator will need during operation. Enter the generator’s size, the cost of natural gas, and the typical load, and the calculator will tell you how much natural gas, in US dollars, this generator uses every hour.

Additionally, we determined the operating expenses of natural gas generators with outputs of 1,000 W, 2,000 W, 3,0 W, 5,0 W, 7,000 W, 8,000 W, 10,000 W, 12,000 W, 15,0 W, 20,000 W, 25,000 W, and 30,000 W at an average price and 1/4, 2/4, 3/4, and full loads.

The Formula For Gas Generator Fuel Consumption

This equation calculates the amount of natural gas a generator uses each hour. In addition, we can figure out how much natural gas we consume to run our generator each hour if we know the price of the fuel.

By extension, we can figure out how much running gasoline is used and how much it costs daily, week, and month.

Let’s figure out how much natural gas a 10,000W generator needs by using it as an example. In addition, we must consider the $10.83 per 1,000 cubic feet national average price of natural gas for homes in 2020.

How Much Natural Gas Is Required To Power A 10,000W Generator At Total Capacity For One Hour?

10 kWh (kilowatt-hours) of natural gas will be required. EIA estimates that to produce 1 kWh, we need 7.43 cubic feet of natural gas (74.3 cubic feet for 10 kWh).

Note: If you were curious about the fuel usage of a natural gas generator per kWh, it is 7.43 ft3 of natural gas or around $0.08 per kWh. That is much less expensive than the $0.1319/kWh national average cost of power.

74.3 cubic feet would cost $10.83 if 1,000 cubic feet cost $10.83. Operating a 10,000W generator costs $10.83 divided by 1,000 cubic feet (74.3 cubic feet) is $0.80 per hour.

Tips For Installing Natural Gas Generators

Use the generator fuel specifications’ indicated 100% load cubic feet per hour (CFH) fuel consumption rating plus 10% when sizing the gas piping, and add any bends into the total feet. Check if the water column pressure is within the permitted range of generator fuel specifications.

The generator fuel inlet should be 8–10′ from the fuel pressure regulator. The regulator vent should be protected by pipework or pointed downward. The regulator may malfunction if moisture enters the vent and freezes or corrodes internal parts. Installing the elastic fuel line (flex line) as straight as possible is best. Certain flex lines have a liner that can kink and limit flow when bent at a 90-degree angle.

 (Note: depending on the manufacturer and model of your generator, control wiring may differ. This diagram’s electrical DC control wiring is for a Generac Industrial generator system.)

Why Not A Natural Gas Generator?

Several readers who left comments on my posts regarding backup power advised looking into natural gas generators. Nevertheless, they may not make sense to us after knowing more about them and our neighborhood’s infrastructure.

Natural gas must be liquefied at shallow temperatures to be stored efficiently, unlike propane, which can be stored at a level temperature and moderate pressure (around 150 psi). This indicates that you should pipe it in, and our home has a pipe that supplies the furnace. Here in Boston, oil delivered by truck is the primary alternative, which happens frequently.

I’ve never had a problem with gas delivery, which is very reliable. Because appliances have been built under the premise that gas won’t ever run out, they must be thus dependable. Pilot lights on older furnaces and stoves continuously emit and burn a small amount of gas.

The house would gradually fill with gas if the gas were turned back on after the pilot had gone out. As a result, in an outage, the company could not restart the gas without sending technicians door to door to each impacted home.

(This dynamic, in which natural gas utilities work very hard to ensure a sufficient flow constantly, played a role in the explosions in Lawrence. They should have noticed a sensor when transitioning from an old distribution paper to a new one.

The sensor began registering low pressure as they turned down the old pipe. The system was prompted to raise the pressure in the new, unmeasured line to prevent an outage. The mechanism increased the valve as the gauge showed low pressure, enabling higher gas to flood the system.)

Natural gas is frequently chosen for permanently placed standby generators because it is significantly more dependable than electricity. They make sense in areas with frequent power outages because they are often large enough to power a whole home.

A portable generator can easily be converted to run on natural gas if you want a cheaper choice. Many businesses provide conversion kits, and you could build an exterior hookup just like you would for a natural gas grill.

The biggest concern when deciding if a natural gas generator would benefit us is what might result in a prolonged outage. There are, in my opinion, basically four causes:

  • The massive storm downed poles and a significant amount of labor on the part of the experts to get everything back up and running.
  • Consumption: The electricity demand is much more than anticipated, and supply needs to catch up.
  • Generation: It’s conceivable that some crucial input is missing because we need to produce more power to meet demand.
  • System: comparable to the Northeast blackout of 2003. Even though most of the system is still in place and possibly functional, it can’t be used because several failures combine unanticipatedly, and equipment that is hard to repair is broken or unreliable.


Let’s conclude today’s topic Generator Power Loss On Natural Gas! Many homes are investing in natural gas generators to guarantee that the lights, heat, and refrigerator always stay on when the grid goes down.

Natural gas is an excellent fuel option for power outages since it is readily available, according to Jacob VanWormer, assistant product manager at Generac Power Systems.

Given that natural gas is supplied by the utility and large storms that knock out power rarely have an equivalent impact on the natural gas system, “a home standby natural gas generator can keep the lights on for however long is necessary.”

It’s common for propane or diesel generator owners to be left in the dark when their supplies run out. They are stuck inside due to bad weather, the shutdown of nearby gas stations, or an inability to obtain propane from vendors.

Yet, the natural gas infrastructure will usually hold. With a natural gas backup generator, a prudent homeowner can keep their home running until the electric service restores power.

Frequently Asked Questions

How much power is lost while using natural gas as a generator?

As a result, your generator will only lose 20% of its power when using natural gas and no power at all when using propane (LPG).

How much does a generator derate from natural gas?

According to the conventional derating formula, a gasoline, diesel, or liquid propane generator should typically have its standard output reduced by 2-3% for every 1000 feet above sea level. The derating factor for generators powered by natural gas is often closer to 5%.

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. Natural gas is one of the most economical and efficient fuels for non-renewable resources for power generation; natural gas can be utilized to power emergency and portable generators.

How long will a natural gas generator last?

A backup generator can often power a medium-sized home for up to 3,000 hours, while it is advised that you only run a generator for 500 hours continually.

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