How Much Gas Does A 3500 Watt Generator Use?

If you buy through the affililate links in this article, we may get a commission at no cost to you. As an Amazon Associate, we earn from qualifying purchases. Check out our editorial guidelines to learn more.

Photo of author
Last Updated On

3500 watt generators tend to use around 0.2 gallons to 0.3 gallons of fuel per hour with many exceptions to this range. Partly due to the different loads.

To generate one kWh which is a measurement of power consumption, the generators tend to need around 0.2 gallons to 0.3 gallons of fuel.

However, you need to know that different generators can vary in details like fuel tank capacity, fuel usage, and fuel efficiency.

The 3500 watt generators I found varied a lot in fuel tank capacity with most options having around two to four gallons of capacity (but there are exceptions).

You can also check out the specific values of the different 3500 watt generators in the tables below.

How much gas do 3500 watt generators use?

3500 watt generators tend to use around 0.2 gallons to 0.3 gallons of fuel per hour with many exceptions to this range as you can see below. Partly due to the different loads.

3500 Watt
Generator Name
Fuel
Tank Size
Fuel Usage
Per Hour
Fuel To
Generate
1 kWh
Continuous
Watts
Energizer EZG35004.20 Gallons0.22 Gallons
At 25% Load
0.29 Gallons
At 25% Load
3000 Watts
Pulsar PG3500MR4.00 Gallons0.33 Gallons
At 50% Load
0.27 Gallons
At 50% Load
2500 Watts
ECHO EG-35004.00 Gallons0.40 Gallons
At 50% Load
0.29 Gallons
At 50% Load
2800 Watts
Sportsman GEN3500DFi3.20 Gallons0.32 Gallons
At 50% Load
0.43 Gallons
At 50% Load
3000 Watts
Generac IQ35002.60 Gallons0.18 Gallons
At 25% Load
0.25 Gallons
At 25% Load
3000 Watts
Generac 7128 GP3500iO2.37 Gallons0.22 Gallons
At 25% Load
0.29 Gallons
At 25% Load
3000 Watts
Predator 35002.33 Gallons0.21 Gallons
At 25% Load
0.28 Gallons
At 25% Load
3000 Watts
GENMAX GM3500Xi2.2 Gallons0.26 Gallons
At 50% Load
0.16 Gallons
At 50% Load
3200 Watts
Energizer eZV3500P1.95 Gallons0.13 Gallons
At 25% Load
0.17 Gallons
At 25% Load
3000 Watts
GENMAX GM3500iAED1.7 Gallons0.34 Gallons
At 50% Load
0.21 Gallons
At 50% Load
3200 Watts
Champion 100571 35001.2 Gallons0.12 Gallons
At 25% Load
0.21 Gallons
At 25% Load
2300 Watts
How much gas different 3500 watt generators use

The first detail I calculated is how much fuel each 3500 watt generator uses per hour at the specified run time loads.

Additionally, I used the numbers to estimate how much gas 3500 watt generators use to generate 1 kWh which is a common measurement of power consumption.

You can describe 1 kWh as a generator providing 1000 watts for an hour at a time.

How much gas does a 3500 watt generator hold?

3500 watt generators tend to hold around 2 to 4 gallons of fuel. There are definitely exceptions too due to different brand designs.

3500 Watt
Generator Name
Fuel
Tank Size
Run Time
@25% Load
Run Time
@50% Load
Peak/Starting
Watts
Continuous
Watts
Energizer EZG35004.20 Gallons19.50 HoursNot Mentioned3500 Watts3000 Watts
Pulsar PG3500MR4.00 GallonsNot Mentioned12 Hours3500 Watts2500 Watts
ECHO EG-35004.00 GallonsNot Mentioned10 Hours3500 Watts2800 Watts
Sportsman GEN3500DFi3.20 GallonsNot Mentioned10 Hours (Gasoline)3500 Watts3000 Watts
Generac IQ35002.60 Gallons14.1 Hours8.9 Hours3500 Watts3000 Watts
Generac 7128 GP3500iO2.37 Gallons11 Hours8 Hours3500 Watts3000 Watts
Predator 35002.33 Gallons11 HoursNot Mentioned3500 Watts3000 Watts
GENMAX GM3500Xi2.2 GallonsNot Mentioned8.5 Hours3500 Watts3200 Watts
Energizer eZV3500P1.95 Gallons15.5 HoursNot Mentioned3500 Watts3000 Watts
GENMAX GM3500iAED1.7 GallonsNot Mentioned5 Hours3500 Watts3200 Watts
Champion 100571 35001.2 Gallons10 HoursNot Mentioned3500 Watts2300 Watts
How much gas different 3500 watt generators hold

As you can see in the table with details above, generator brands choose how much gas their 3500 watt models hold. There is not really one standard.

That means you want to check the fuel tank capacity for your individual model and/or check out the table above before investing in a new generator.

Photo of author

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.