On average, a 500-gallon propane tank should be able to meet a households needs for about five months. The home furnace is the largest consumer of all that propane. A 500-gallon tank of propane may not last a full year even if it will only be used for the furnace.

How long will 500 gallons of propane run a generator?

As for another example, again depending on what you are powering and the size of your generator (lets say 20kw in this example), a propane generator may use around 2-3 gallons/hour. 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.

Is it cheaper to run a generator on propane or gas?

Generally speaking, propane generators are usually less expensive than natural gas generators. Unfortunately, fuel is usually cheaper for natural gas units, but some prefer the lower initial price of the unit itself.

Is it better to run a generator on propane or gas?

Propane vs Gasoline Generator Efficiency Propane generators are less efficient than gas generators, producing fewer BTUs per gallon of fuel. However, propane is a cleaner-burning fuel than gasoline, making it better for both the environment and your generator.