Approximate Diesel Fuel Consumption Chart

This chart approximates the fuel consumption of a diesel generator based on the size of the generator and the load at which the generator is operating at. Please note that this table is intended to be used as an estimate of how much fuel is burned during operation and is not an exact representation due to various factors including generator/engine manufacturer, model, age and load.

Download the Diesel Fuel Consumption Chart as a PDF

WPP offers fuel polishing services.  Click here for more information including a short educational video.

Diesel Fuel Top Off      Diesel fuel polishing samples

Generator Size (kW) 1/4 Load (gal/hr) 1/2 Load (gal/hr) 3/4 Load (gal/hr) Full Load (gal/hr)
20 0.6 0.9 1.3 1.6
30 1.3 1.8 2.4 2.9
40 1.6 2.3 3.2 4.0
60 1.8 2.9 3.8 4.8
75 2.4 3.4 4.6 6.1
100 2.6 4.1 5.8 7.4
125 3.1 5.0 7.1 9.1
135 3.3 5.4 7.6 9.8
150 3.6 5.9 8.4 10.9
175 4.1 6.8 9.7 12.7
200 4.7 7.7 11.0 14.4
230 5.3 8.8 12.5 16.6
250 5.7 9.5 13.6 18.0
300 6.8 11.3 16.1 21.5
350 7.9 13.1 18.7 25.1
400 8.9 14.9 21.3 28.6
500 11.0 18.5 26.4 35.7
600 13.2 22.0 31.5 42.8
750 16.3 27.4 39.3 53.4
1000 21.6 36.4 52.1 71.1
1250 26.9 45.3 65.0 88.8
1500 32.2 54.3 77.8 106.5
1750 37.5 63.2 90.7 124.2
2000 42.8 72.2 103.5 141.9
2250 48.1 81.1 116.4 159.6

Diesel Fuel Polishing

At WPP, our diesel fuel polishing service is part of our preventive maintenance program. We strive to maintain and prolong the life of your generator. Plus, it gives you peace of mind knowing that your generator is in perfect working order, and can run for hours whenever you need it.

Our process starts by taking sample of diesel fuel from the middle and bottom of the tank.  The sample is then sent to the lab, which provides a full report on of the quality of fuel in your fuel tank.  This report is shared with you as well as recommended action steps based on the results. The report tells us which and how much biocides we should be using in the polishing process in order to get you the cleanest fuel tank possible.

Depending on your generator and fuel needs, you might need to clean your fuel more or less often. Critical backup generators, generators in harsh climates, and generators with highly contaminated fuel often require more cleaning to prevent damage and make sure they run properly.  In Houston and the Texas Gulf Coast areas, for example, it is recommended to clean and treat your diesel fuel tank every six months.   To view more information on NFPA 110 standards and recommendations, click here.