How Long Will A 7000 Watt Generator Run?

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A 7000 watt generator will run around 14 to 18 hours at 25% load on a full tank of gas.

However, you want to keep in mind that this generator category does not have a standard run time. Different 7000 watt generators can vary a lot in run time.

One 7000 watt generator had a run time of 16 hours at 25% load, one propane generator had a run time of 8 hours at 50% load, and one model had a run time of 12 hours at 50% load.

For this article, I did not include all the generators with up to 7000 continuous watts.

If you are considering these and run time is important to you, you typically want to check the individual models since this detail can vary a lot.

How long will a 7000 watt generator run on a tank of gas?

A 7000 watt generator will run around 14 to 18 hours at 25% load on a full tank of gas.

That being said, how long a 7000 watt generator will run on a tank of gas depends a lot on the individual model.

These do not only vary in terms of fuel efficiency but also tank size.

I put the 7000 watt generators I could find together with their run time(s) at different loads in the table below.

Keep in mind that the run time at 50% load is not necessarily half the run time at 25% load.

Sometimes you can’t make a perfect comparison with the information manufacturers provide.

Another thing to note is that the SPORTSMAN GEN7000 runs on propane aka LP.

7000 Watt
Generator Name
Run Time
@25% Load
Run Time
@50% Load
Run Time
@Rated Load
Peak/Starting
Watts
Continuous
Watts
Honda EU7000iS16 HoursNot
Mentioned
6.4 Hours7000 Watts5500 Watts
SPORTSMAN GEN7000Not
Mentioned
8 HoursNot
Mentioned
7000 Watts6000 Watts
A-iPower SUA7000CNot
Mentioned
12 Hours8 Hours7000 Watts6000 Watts
Run times of 7000 watt generators on full tank of fuel

How long will a 7000 watt generator run on a gallon of gas?

A 7000 watt generator will typically run around 1.7 to 3.1 hours on a gallon of gas at 25% load.

This will again depend on the individual model you are considering. You can see the examples I found in the table below.

Again, keep in mind that the SPORTSMAN GEN7000 does not actually use gasoline. It would be more accurate to say that the numbers are for a gallon of fuel (propane) for this generator.

Generator
Name
Run Time
@25% Load
Run Time
@50% Load
Run Time
@Rated Load
Fuel Usage
Per Hour
Fuel Tank Size
Honda EU7000iS3.10Not Mentioned1.300.32 Gallons
@25% Load
5.1 Gallons
SPORTSMAN GEN7000Not Mentioned1.80Not Mentioned0.56 Gallons LP
@50% Load
20 Lbs Or
About 4.5
Gallons Of LP
A-iPower SUA7000CNot Mentioned1.701.100.58 Gallons
@50% Load
7 Gallons
Run times of 7000 watt generators on a gallon of fuel

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Author:

Mats is the founder and head editor of Generator Decision. With a combination of critical thinking, tireless research, and a healthy interest in electronics he helps people find the right generators and how to use these. At this point in the journey, Mats has done research on hundreds of portable generators.