HomeCompare40–45 kW Bi-Fuel (NG/LP)

40–45 kW Bi-Fuel (NG/LP) Generators Compared

7 40–45 kw bi-fuel (ng/lp) generator models side by side — power, phase, sound level, weight and fuel tank capacity, compiled from manufacturer specification sheets.

ModelStandbyPhaseSoundWeightFuel tank
Olympian G40LG240.0 kW714.0 kg
Hipower HGM 40 T6U40.0 kW369.0 dBA
Generac XG0404540.0 kW1-Phase,3-Phase64.0 dBA
Gillette SP-41040.0 kW
Cummins/Onan GGPB40.0 kW3-phase, 1-phase819.0 kg225.0 L
Generac Home Standby 4040.0 kW1
Generac SG045 | 4.5L | 45 kW41.0 kWSingle-Phase, Three-Phase353.4 kg

Common questions

Which 40–45 kW Bi-Fuel (NG/LP) generator is quietest?

Among 40–45 kW Bi-Fuel (NG/LP) generators in this comparison, the Generac XG04045 is quietest at 64.0 dBA.

Which 40–45 kW Bi-Fuel (NG/LP) generator is lightest?

Among 40–45 kW Bi-Fuel (NG/LP) generators in this comparison, the Generac SG045 | 4.5L | 45 kW is lightest at 353.4 kg dry weight.

Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.