How Much Propane Does A Generator Use

How Much Propane Does A Generator Use?

A severe winter storm wreaked havoc in a small town nestled in the countryside, causing widespread power outages that lasted for days. The freezing temperatures and heavy snowfall made living conditions unbearable for the residents. However, amidst the darkness and bitter cold, one household stood apart.
Mr. and Mrs. Johnson had the foresight to invest in a whole-house propane generator. As the storm knocked out the power grid, their generator instantly activated. Their home remained warm and well-lit, thanks to the generator powering the central heating system and providing electricity for lights and appliances. The Johnsons’ neighbors, amazed by their resilience, sought refuge in their home, where the generator could support multiple households during the prolonged outage.
The generator also played a crucial role in keeping the community safe. The Johnsons’ house became a temporary shelter, providing warmth, hot meals, and a reliable power source for essential medical equipment to those in need. It became a beacon of hope and support during a challenging time.
This incident highlighted the immense value of whole-house generators in ensuring the well-being and comfort of individuals and communities during power outages. They offer a lifeline, enabling vital systems to function and providing a sense of normalcy when the world is in disarray.
Now, you may be wondering, “How much propane does a generator use?” The answer to this question is essential for understanding home generator propane consumption and planning for the needs of a generator. Whether you are considering purchasing a generator or already own one, knowing the propane usage is crucial to ensure you have enough fuel to keep your generator running when needed.
In this article, we will delve into propane usage in generators. We will explore various aspects, such as how much propane a generator uses per day, per hour, or gallon. We’ll also discuss propane whole-house generator fuel consumption, fuel consumption calculators, and factors that can influence the propane consumption of different generator models.
So, let’s explore the world of generator propane usage and discover the insights you need to make informed decisions about your power backup strategy.

What Is Propane?

Hydrocarbon gas propane is often utilized as a fuel source. It is a byproduct of the processing of natural gas and the refining of petroleum, and it is kept as a liquid in high-pressure tanks.
Propane is a fuel that burns cleanly and is affordable and convenient to carry. Additionally, it is a gas that is safe to employ in a range of applications since it is neither toxic nor dangerous.

Propane Usage Formula


Propane Usage (in gallons per hour) = (Generator Power Output in Watts × Generator Runtime in Hours) / (Propane Energy Content in BTUs × Generator Efficiency)

  • Generator Power Output: The power output of the generator in Watts.
  • Generator Runtime: The total runtime of the generator in hours.
  • Propane Energy Content: The energy content of propane in BTUs (British Thermal Units).
  • Generator Efficiency: The generator’s efficiency is expressed as a decimal or percentage.

Note: Ensure that the units for power output, energy content, and efficiency are consistent (e.g., all in Watts, BTUs, or decimals) to obtain accurate results.

How much propane does a 20kw generator use per hour

  1. Convert the generator power output to Watts:
  • Generator Power Output = 20kW = 20,000 Watts
  1. Determine the generator runtime:
  • Generator Runtime = 1 hour
  1. Determine the propane energy content:
  • Propane Energy Content: The energy content of propane can vary, but a commonly used value is approximately 91,500 BTUs per gallon.
  1. Determine the generator efficiency:
  • Generator Efficiency: For this example, let’s assume the generator efficiency is 80%, which can be expressed as 0.8.
  1. Plug the values into the propane usage formula:
  • Propane Usage (in gallons per hour) = (20,000 Watts × 1 hour) / (91,500 BTUs/gallon × 0.8)
  • Propane Usage = 20,000 / (73,200)
  • Propane Usage ≈ 0.273 gallons per hour

Therefore, a 20kW generator would use approximately 0.273 gallons of propane per hour.

  1. Assumed values and resulting propane usage estimation:
  • Generator Power Output: 20kW
  • Generator Runtime: 1 hour
  • Propane Energy Content: 91,500 BTUs per gallon
  • Generator Efficiency: 80% (0.8)


  • Propane Usage: Approximately 0.273 gallons per hour

Propane Generator Usage Calculator

Propane Generator Usage Calculator

Instructions on how to use the Propane Generator Usage Calculator:

Gathering information about generator specifications:

  • Before using the calculator, gather the necessary information about your propane generator. You must know the generator power output, runtime, propane energy content, and generator efficiency. 

Accessing a propane generator usage calculator online:

Here above mention propane generator usage calculator, there you can find how much propane a home generator use.   

Entering generator specifications and calculating propane usage:

  • Once you have found a suitable calculator, enter the relevant information. Typically, you will need to input the following data:
    • Generator Power Output: Enter the power output of your generator in Watts.
    • Generator Runtime: Specify the duration for which the generator will run in hours.
    • Propane Energy Content: Provide the energy content of propane in BTUs per gallon.
    • Generator Efficiency: Enter the efficiency of your generator as a decimal (e.g., 0.8 for 80% efficiency).
  • To estimate how much propane will be used, input the necessary information and then click “Calculate” or a similar button.

Reviewing the results obtained from the calculator:

  1. After entering the required information, click the “Calculate” or similar button to initiate the calculation process.
  2. The calculator will calculate propane usage using the provided formula and the entered generator specifications.
  3. Once the calculation is complete, the calculator will display the estimated propane usage based on the entered specifications.
  4. Take note of the propane typically call provided in gallons per hour.
  5. Review the results and consider them as an estimation of the propane usage for your generator based on the given specifications.
  6. Note that the calculated propane usage may vary depending on various factors, so it’s always advisable to refer to the manufacturer’s guidelines and consult professionals for accurate assessments.

Example scenario: How much propane does a 10kw generator use per hour

Suppose you have a 10kW propane generator and want to calculate its propane usage.

1-Gather the necessary information:

  • Generator Power Output: 10kW (10,000 Watts)
  • Generator Runtime: Let’s assume a runtime of 2 hours.
  • Propane Energy Content: Consider a propane energy content of 91,500 BTUs per gallon.
  • Generator Efficiency: Assume an efficiency of 85% (0.85).

2-Access a propane generator usage calculator online:

Above, you can use the propane consumption usage calculator or use this formula:

Propane Usage (in gallons per hour) = (Generator Power Output in Watts × Generator Runtime in Hours) / (Propane Energy Content in BTUs × Generator Efficiency)

3-Enter the generator specifications and calculate propane usage:

  • Enter the following values in the calculator:
    • Generator Power Output: 10,000 Watts
    • Generator Runtime: 2 hours
    • Propane Energy Content: 91,500 BTUs per gallon
    • Generator Efficiency: 0.85
  • Click on the “Calculate” button or similar to obtain the results.
  1. Review the results:
  • The calculator will estimate the propane usage based on the entered specifications. Take note of the propane usage value, given in gallons per hour.
  • For example, the calculator may display a propane usage of approximately 0.173 gallons per hour for the 10kW generator.

Relationship between load capacity and propane consumption

The load capacity of a generator refers to the amount of power it can deliver. It is typically measured in kilowatts (kW) and represents the maximum power output the generator can sustain. The load capacity directly affects propane consumption, as generators consume more fuel to meet higher power demands.

Understanding the relationship between load capacity and propane consumption is essential for estimating fuel usage and optimizing efficiency. As the load on the generator increases, the engine works harder, resulting in higher propane consumption. Conversely, operating the generator at lower loads leads to reduced fuel consumption.

Examples of propane usage at different load levels for specific generator sizes

22 kW Generator:

  • Low Load Example: Running at a 25% load (5.5 kW), the 22 kW generator might consume around 0.6 gallons of propane per hour.
  • Medium Load Example: Operating at a 50% load (11 kW), the propane usage for the 22 kW generator could be approximately 1.2 gallons per hour.
  • High Load Example: When running at a 75% load (16.5 kW), the propane consumption for the 22 kW generator might reach around 1.8 gallons per hour.

38 kW Generator:

  • Low Load Example: Operating at a 25% load (9.5 kW), the 38 kW generator may consume approximately 1.1 gallons of propane per hour.
  • Medium Load Example: Running at a 50% load (19 kW), the propane usage for the 38 kW generator could be around 2.3 gallons per hour.
  • High Load Example: When operating at a 75% load (28.5 kW), the propane consumption for the 38 kW generator might be approximately 3.4 gallons per hour.

Propane Usage Chart for Propane Generators

The following chart provides approximate propane usage per hour at different load percentages for various generator sizes. These approximate values can vary based on specific generator models and conditions.

Generator Size | Load Percentage | Propane Usage (Gallons per Hour)

Propane Per Hour Chart For Propane Generators
Generator Size (kW or Watts) 25% Load 50% Load 75% Load 100% Load (Full Load)
500 Watt Generator 0.02 Gallons Per Hour 0.05 Gallons Per Hour 0.07 Gallons Per Hour 0.08 Gallons Per Hour
1000 Watt Generator 0.05 Gallons Per Hour 0.10 Gallons Per Hour 0.13 Gallons Per Hour 0.17 Gallons Per Hour
1500 Watt Generator 0.07 Gallons Per Hour 0.15 Gallons Per Hour 0.20 Gallons Per Hour 0.25 Gallons Per Hour
2000 Watt Generator 0.09 Gallons Per Hour 0.20 Gallons Per Hour 0.27 Gallons Per Hour 0.33 Gallons Per Hour
3000 Watt Generator 0.14 Gallons Per Hour 0.30 Gallons Per Hour 0.40 Gallons Per Hour 0.50 Gallons Per Hour
4000 Watt Generator 0.19 Gallons Per Hour 0.40 Gallons Per Hour 0.53 Gallons Per Hour 0.67 Gallons Per Hour
5kW Generator 0.24 Gallons Per Hour 0.50 Gallons Per Hour 0.67 Gallons Per Hour 0.84 Gallons Per Hour
6kW Generator 0.28 Gallons Per Hour 0.60 Gallons Per Hour 0.80 Gallons Per Hour 1.00 Gallons Per Hour
7kW Generator 0.33 Gallons Per Hour 0.70 Gallons Per Hour 0.93 Gallons Per Hour 1.17 Gallons Per Hour
8kW Generator 0.38 Gallons Per Hour 0.80 Gallons Per Hour 1.07 Gallons Per Hour 1.34 Gallons Per Hour
9kW Generator 0.42 Gallons Per Hour 0.90 Gallons Per Hour 1.20 Gallons Per Hour 1.51 Gallons Per Hour
10kW Generator 0.47 Gallons Per Hour 1.00 Gallons Per Hour 1.33 Gallons Per Hour 1.67 Gallons Per Hour
11kW Generator 0.52 Gallons Per Hour 1.10 Gallons Per Hour 1.47 Gallons Per Hour 1.84 Gallons Per Hour
12kW Generator 0.57 Gallons Per Hour 1.20 Gallons Per Hour 1.60 Gallons Per Hour 2.01 Gallons Per Hour
13kW Generator 0.61 Gallons Per Hour 1.30 Gallons Per Hour 1.73 Gallons Per Hour 2.18 Gallons Per Hour
14kW Generator 0.66 Gallons Per Hour 1.40 Gallons Per Hour 1.87 Gallons Per Hour 2.34 Gallons Per Hour
15kW Generator 0.71 Gallons Per Hour 1.50 Gallons Per Hour 2.00 Gallons Per Hour 2.51 Gallons Per Hour
16kW Generator 0.75 Gallons Per Hour 1.60 Gallons Per Hour 2.13 Gallons Per Hour 2.68 Gallons Per Hour
17kW Generator 0.80 Gallons Per Hour 1.71 Gallons Per Hour 2.27 Gallons Per Hour 2.84 Gallons Per Hour
18kW Generator 0.85 Gallons Per Hour 1.81 Gallons Per Hour 2.40 Gallons Per Hour 3.01 Gallons Per Hour
19kW Generator 0.90 Gallons Per Hour 1.91 Gallons Per Hour 2.53 Gallons Per Hour 3.18 Gallons Per Hour
20kW Generator 0.94 Gallons Per Hour 2.01 Gallons Per Hour 2.67 Gallons Per Hour 3.35 Gallons Per Hour
22kW Generator 1.04 Gallons Per Hour 2.21 Gallons Per Hour 2.93 Gallons Per Hour 3.68 Gallons Per Hour
24kW Generator 1.13 Gallons Per Hour 2.41 Gallons Per Hour 3.20 Gallons Per Hour 4.02 Gallons Per Hour
26kW Generator 1.22 Gallons Per Hour 2.61 Gallons Per Hour 3.46 Gallons Per Hour 4.35 Gallons Per Hour
28kW Generator 1.32 Gallons Per Hour 2.81 Gallons Per Hour 3.73 Gallons Per Hour 4.69 Gallons Per Hour
30kW Generator 1.41 Gallons Per Hour 3.01 Gallons Per Hour 4.00 Gallons Per Hour 5.02 Gallons Per Hour
32kW Generator 1.51 Gallons Per Hour 3.21 Gallons Per Hour 4.26 Gallons Per Hour 5.35 Gallons Per Hour
34kW Generator 1.60 Gallons Per Hour 3.41 Gallons Per Hour 4.53 Gallons Per Hour 5.69 Gallons Per Hour
36kW Generator 1.70 Gallons Per Hour 3.61 Gallons Per Hour 4.80 Gallons Per Hour 6.02 Gallons Per Hour
38kW Generator 1.79 Gallons Per Hour 3.81 Gallons Per Hour 5.07 Gallons Per Hour 6.35 Gallons Per Hour
40kW Generator 1.89 Gallons Per Hour 4.01 Gallons Per Hour 5.33 Gallons Per Hour 6.69 Gallons Per Hour

 Variation in Propane Consumption based on Load Percentages and Generator Sizes:

Propane consumption in generators can vary based on the load percentage and the generator size. Here are some general observations:

Load Percentage:

  • As the load on the generator increases, the propane consumption typically increases proportionally. A higher load percentage means the generator produces more power and uses more propane.

Generator Size:

  • Larger generator sizes consume more propane than smaller ones when operating at the same load percentage. This is because larger generators have higher power output capabilities and require more fuel to meet the increased demand.

Efficiency Consideration:

  • Generator efficiency plays a crucial role in propane consumption. Higher-efficiency generators utilize propane more effectively, lowering consumption rates for the same power output and runtime.

Individual Variations:

  • It’s important to note that propane consumption can vary among different generator models, even at the same load percentage and size. Engine design, technology, and specific efficiency ratings can influence propane usage.

Always consult the manufacturer’s documentation or use a propane generator usage calculator to obtain more accurate and specific propane consumption values for your particular generator model.

Overcoming the Challenges of Determining Propane Consumption

Difficulties in accurately determining generator propane usage

When it comes to propane-powered generators, accurately determining propane consumption can be challenging. Several factors contribute to this difficulty, making it essential to find reliable solutions for calculating propane usage.

  1. Generator Variability: Different generators have varying fuel efficiency rates, making it difficult to estimate propane consumption accurately across different models and brands. Each generator may have unique characteristics and operating parameters affecting fuel consumption.
  2. Load Capacity: Propane consumption is directly influenced by the load capacity of the generator. As the load increases, the generator consumes more propane to meet the higher power demands. However, estimating the actual load and its variations can take time, further complicating accurate consumption calculations.
  3. Runtime Variations: The duration for which a generator runs also affects propane consumption. Longer runtimes result in increased fuel usage. However, predicting the exact runtime in real-world scenarios can be complex due to unpredictable factors such as power outages or varying energy demands.
  4. Propane Energy Content: The energy content of propane can vary, and using incorrect values can lead to inaccurate consumption estimates. It is crucial to consider the energy content of propane in BTUs per gallon for precise calculations.

Need for a reliable solution to calculate propane consumption accurately:

Given the difficulties involved in accurately determining propane consumption for generators, there is a significant need for reliable solutions to calculate Usage. Accurate consumption estimates help users plan fuel requirements, optimize efficiency, and ensure uninterrupted power supply.

  1. Efficiency and Cost Optimization: Precise propane usage calculations enable users to optimize the efficiency of their generators and minimize unnecessary fuel expenses. Knowing the exact fuel consumption helps plan fuel storage and refueling schedules efficiently.
  2. Equipment Maintenance and Service Life: Understanding propane consumption allows users to assess the impact on maintenance and service life. Accurate calculations aid in scheduling maintenance tasks, such as regular refueling intervals and proper generator servicing, based on actual usage patterns.
  3. Backup Power Planning: Propane-powered generators are commonly used as backup power sources during emergencies or power outages. Having accurate propane consumption estimates helps users determine the appropriate propane storage capacity and plan for extended power needs.
  4. Environmental Considerations: Propane is a cleaner-burning fuel than other fossil fuels, and accurate consumption calculations contribute to environmentally conscious practices. Users can monitor and minimize their carbon footprint by optimizing fuel usage and reducing emissions by knowing the exact fuel consumption.

How To Calculate: How Much Propane Does A Generator Use?

Imagine having a propane generator to power your wood lodge in the forest. You lose electricity after a winter storm and must use your generator to keep your cabin warm and cozy during that time.

You must first know how much power your cabin uses in order to calculate how much propane you need. Assume your overall load is 3000 watts per hour. You also know that you want to run your generator for a total of 36 hours over the course of three days, or 12 hours per day.

To calculate the total propane needed, follow these steps:

Step 1: Convert watts per hour to horsepower 

1 horsepower = 500 watts/hour

So, 3000 watts per hour is equal to 3000/500 = 6 horsepower

Step 2: Convert watts per hour to BTUs

 1 horsepower = 10,000 BTUs

Therefore, 3000 watts per hour is equal to 3000/500 x 10,000 = 60,000 BTUs.

Step 3: Convert watts per hour to gallons of propane 

1 gallon of propane = 91,500 BTUs

1 BTU = 1/91,500 gallons of propane

So, 60,000 BTUs is equal to 60,000 x 1/91,500 = 0.655 gallons of propane

Step 4: Multiply by the number of hours you need to run the generator 

You want to run your generator for 36 hours, so multiply 0.655 gallons by 36 to get the total amount of propane needed: 0.655 x 36 = 23.58 gallons

If you have a 100-gallon propane tank, it will last for 100/23.58 = 4.3 days, or about enough for your needs.

Alternatively, if you store propane in portable cylinders that are measured in pounds, you can use the formula:

Number of pounds to run a generator for 1 hour = number of watts x 4.24 ÷ 4575

So, to run your generator for 1 hour at 3000 watts per hour, you will need 3000 x 4.24 ÷ 4575 = 3.86 pounds of propane.

For 36 hours, you will need 3.86 x 36 = 138.96 pounds of propane, or about 69.5, 20-pound propane cylinders.

By using these formulas and converting between different units of measurement, you can accurately determine how much propane you need to power your generator for a specific amount of time.

Propane Usage Calculator

Propane Usage Calculator

How Much Propane Does An Average Generator Have?

The solution to this question is challenging. Depending on size, it may contain anything from 1 to 20 gallons of propane. Smaller devices often have 5 gallons, while bigger ones typically carry 20 gallons.

Types Of Generators And Their Propane Usage

How much propane is required to run a generator will depend on its size and kind. Larger, more powerful models consume more propane than smaller, less powerful models.

Many different generators are available if you want to supply electricity to your house or camping location. Knowing how to use propane is essential if you want to make sure you have enough fuel on hand for a protracted power outage.

Generators are categorized using the power output unit known as watts, calculated by dividing volts by amps.

  • Standby generator with an output of 800–1000 watts uses around 1 gallon of petrol every 10 hours.
  • 1500-2000 Watt About 1.5 gallons of gasoline are used by the standby generator every eight hours.
  • 3000 Watt About 2 gallons of gasoline are used by a standby generator every six hours.

Every model and manufacturer uses fuel differently. According to manufacturers, these are general recommendations. It’s crucial to read the owner’s handbook for further information.

The next step is to calculate how much propane will be required to power the generator once you have decided on your required size. In case of an outage, it’s critical to determine how long you’ll need your generator. For instance, your generator will be necessary for 4-5 days if you’re attempting to survive a storm comfortably. The number of watt-hours needed for a single hour is specified for generators.

Tips For Conserving Propane While Using A Generator

Here is some advice on how to save propane.

  • When not in use, turn it off.
  • Use it just as needed, and turn it off before leaving the house.
  • Be mindful that an electric stove might use more propane than other appliances if you use your generator with one.
  • The propane tank’s valve should be closed. If your generator accidentally starts, it can soon run out of gas.
  • Remove the battery if you’re using a generator to power a car or truck’s ignition system. It might aid in propane conservation.
  • Even if it’s only temporary, plug appliances directly into a power socket.

What Are The Benefits And Disadvantages Of Using Propane Over Other Types Of Generators?


A propane generator is a fantastic option for older persons or people with restricted mobility because it is simple to start. It also operates silently, so using it during a power outage won’t annoy your neighbors. And lastly, since propane is fueled by liquid gas rather than gasoline, air pollution is not possible in the area around your home.


Compared to other varieties, propane has very few drawbacks. Despite producing more power on average than different varieties, propane appliances are more expensive to purchase since they use liquid to gas as fuel. Additionally, you cannot use them during brief power spikes since they require some time to warm up before operating.

Tips For Maintaining Your Propane Generator So That It runs Efficiently:

  1. Before turning it on, always check that the propane level is enough and that there is no air in the tank.
  2. Close all windows and vents to minimize energy consumption while the generator runs.
  3. Before starting the generator, if you have a heat pump, ensure it has cooled down.
  4. Before starting your generator, ensure your gas tank is at least half full to save on gasoline.
  5. Use a carbon monoxide monitor to ensure there are no propane gas leaks when the generator is running indoors. Because propane gas has no color or smell, it’s crucial to utilize a carbon monoxide detector.
  6. If your tank is less than half full and you expect to be on the road for a while, refill.


Depending on its size, your generator will require a different quantity of propane. Using a generator is crucial to use as little of your propane as possible. Try not to operate your generator for extended periods and only use it as needed. Keep in mind how crucial it is to maintain your generator.

Related FAQs

how Much Propane Does A 20kw Generator Use Per Hour

A 20kW generator will typically consume more propane per hour than a smaller generator, but the precise amount can vary depending on the situation. To find out how much propane a given 20kW generator uses, it is recommended to refer to the owner’s manual or get in touch with the manufacturer.

Which Is More Cost-Effective To Operate Gasoline Generators Or Diesel Fuel,  Propane-Powered Generators?

Fuel selections might be confusing when buying a new backup generator. Each fuel expense has perks and downsides. Propane has more power and less pollution than gasoline but costs more. At $2.99/gallon (national average), gasoline-generated power costs around $0.22/kWh. Propane costs $0.34/kWh, and diesel $0.18/kWh.
Diesel generators are popular because diesel is the best fuel for isolated or harsh conditions.

How Much Propane Will My Portable Generator Use?

Full 20-pound propane tank powers a 38-pound generator. Dual fuel is accessible if you don’t want to commit to one energy source. Gasoline is the most preferred fuel for portable generators since it’s readily available.

Comparison Between Propane And Natural Gas Generators?

Using a natural gas connection instead of propane will consume far less propane. The most common fuel used nowadays for generators is natural gas. You may anticipate utilizing a propane tank of roughly 1 gallon per hour with this fuel.

How Many Pounds Of Propane Are There In A Gallon?

A gallon of propane contains about 91 pounds.

How Much Do Pounds Of Propane Weigh?

One pound of propane contains 8.3 ounces of propane.

How Much Propane Does A 12,000 Watt Generator Use?

A 12,000 watt generator’s propane consumption can vary dramatically based on a number of variables, including the generator’s load, efficiency, and propane tank capacity. A 12,000 watt generator will typically consume 20 to 30 pounds of propane per hour of operation. This is only an approximate estimate, so for a more precise response, you should check the manufacturer’s specifications or speak with a specialist.

How Much Energy Does A Pound Of Propane Produce?

A pound of propane produces 21,500 BTUs.

How Many Hours Of Gallon Propane Tank Are In A 20 lb?

A 20-pound propane tank contains roughly about 44 hours of use.

How Much Propane Does It Take To Power My Generator?

The amount of propane you will need to fuel your generator depends on the size of the generator.

How much propane does a generator use in 24 hours?

Depending on its size and the load it is supporting, a generator’s propane consumption per day will vary. Here are a few instances:
A 5000-watt small portable generator can consume 20 pounds of propane during a 24-hour period of operation.
A larger standby generator, such as one with 20,000 watts, can consume 80 pounds of propane during a 24-hour period of operation.

How Long Will A 22kW Generator Operate On Propane?

A typical 22kW generator will operate for about 4 hours on 1-1/2 gallons of propane.

How Long Does A Propane Tank Of 500 Gallons Last?

In an emergency, a 500-gallon propane tank might keep a household alive for three to five days. The same-sized tank would last around 5 weeks with typical use.

How Much Propane Does A Generator Use Per Minute?

The amount of propane a generator uses per minute is unknown. According to some sources, a 4000-watt generator will use roughly.65 gallons of propane every hour at a typical price of $1.60 per gallon. The propane generator will use.065 gallons per minute.

How Much Propane Does A Generator Use Per Month?

According to a study, a 7000-watt generator will consume around 55 gallons of fuel per month.
BTUs can be used to measure propane instead of the usual gallon unit. Propane has a Btu content of 91,500 per gallon. That implies that the 7000-watt generator has a monthly propane consumption capacity of around 6,535,000 Btu.

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