Home Fuel consumption40–45 kW Bi-Fuel (NG/LP)

40–45 kW Bi-Fuel (NG/LP) Generator Fuel Consumption

Manufacturer-documented fuel consumption for 5 40–45 kW Bi-Fuel (NG/LP) generator sets — median 6.02 gal/h at full load, 3.12 gal/h at half load.

Compare 40–45 kW Bi-Fuel (NG/LP) generator specs side-by-side →

Consumption by model

5
ModelkWgal/h @ 50%gal/h @ 100% Tank (L)Runtime @ 50% (h)
Generac G40LG240119.14198.66
Generac QT040403.126.02
Generac SG0404080.57161.14
Generac XG04045402.223.58
Kohler 40ERES400.820.75

Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.

Common questions

How much fuel does a 40–45 kW Bi-Fuel (NG/LP) generator use?

Across 5 models with manufacturer data, full-load consumption runs 0.75–198.66 gal/h (median 6.02); at 50% load the median is 3.12 gal/h.