4 55–60 kw bi-fuel (ng/lp) generator models side by side — power, phase, sound level, weight and fuel tank capacity, compiled from manufacturer specification sheets.
| Model | Standby | Phase | Sound | Weight | Fuel tank |
|---|---|---|---|---|---|
| Spectrum 50GS60 | 55.0 kW | 3 | — | — | — |
| Olympian G55F3S | 55.0 kW | — | — | — | — |
| Generac QT055 | 55.0 kW | — | 73.0 dBA | — | — |
| Generac SG080 | 59.0 kW | 3 | 83.5 dBA | 936.2 kg | — |
Among 55–60 kW Bi-Fuel (NG/LP) generators in this comparison, the Generac QT055 is quietest at 73.0 dBA.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.