As for another example again depending on what you are powering and the size of your generator let s say 20kw in this example a propane generator may use around 2 3 gallons hour.
Lp gas generator fuel consumption.
As you might know all generators are not created equals some will consume more and some others may use less than what was mentioned.
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Typically a 50 amp generator burns at least one gallon of lp per hour while a 30 amp generator will consume about a half a gallon of lp per hour.
But just for shits and giggles let s give it a shot.
At least for long periods of time.
So if you have a 500 gallon tank which can only be filled to 400 gallons then a full tank would last you around 6 to 7 days.
For example if a burner uses 22 875 btu per hour it will last 4 hours on a gallon of propane which contains 91 502 btu.
You simply divide the energy content of the propane by the burner consumption.
Gasoline prices are somewhat expensive and tend to be the least efficient way to run a generator.
Propane gas consumption chart.
91 502 22 875 4.
Calculating propane gas consumption is based on the burner size.
To compare that to gasoline 110 000 btu per gallon times the cost by 1 1 to arrive at 0 88 per gallon.
So if you are paying over 0 88 per gallon for gasoline you can save by using natural gas.
Most portable generators will run on gasoline out of convenience.
A typical generator uses three quarters of gas gallons per hour.