Diesel Generators

Diesel Fuel Consumption Table

Diesel Fuel Consumption

Approximate 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 a generator uses during operation and is not an exact representation due to various factors that can increase or decrease the amount of fuel consumed.


Generator Size (kW) 1/4 Load (gal/hr) 1/2 Load (gal/hr) 3/4 Load (gal/hr) Full Load (gal/hr)
12 0.3 0.5 0.7 0.9
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
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