How long a dual fuel generator will run on a propane tank depends on the size of the propane tank and the generator load. Typically, a standard 20-pound propane tank can run a generator for about 8 to 10 hours at 50% load. The exact duration will vary depending on the efficiency of the generator and the power demand placed on it.
A dual-fuel generator running on propane generally offers less range than gasoline, due to the lower energy density of propane. On average, a generator running on propane will consume approximately 1-2 gallons per hour at 50% load.
With a 20-pound propane tank holding approximately 4.7 gallons of propane, the generator can run for approximately 8 to 10 hours under moderate load conditions.
The life of a propane tank on a generator is influenced by the power output of the generator and the load applied. For a 20-pound propane tank, holding approximately 4.7 gallons of propane, a generator can run for approximately 8 to 10 hours at half load.
Larger propane tanks, such as a 100-pound tank, will last proportionately longer, potentially providing energy for several days depending on usage.
For a Champion dual-fuel generator, the runtime of a propane tank varies depending on the model and load. For example, with a 20-pound propane tank, a Champion generator can run 8 to 10 hours at 50% load. Larger models with higher power output may consume more propane, reducing run time.
A 12,000 watt generator running on propane will have varying run times depending on the load and the size of the propane tank.
At 50% load, or about 6,000 watts, a 20-pound propane tank can provide power for about 4 to 5 hours. Larger propane tanks, such as a 100-pound tank, would extend run time, potentially providing power for 20 to 25 hours under similar load conditions.