3 625–630 kw natural gas 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 |
|---|---|---|---|---|---|
| Generac MG625 | 625.0 kW | Three-Phase | — | 6724.0 kg | — |
| Generac SG625 | 625.0 kW | Three-Phase | — | 6724.0 kg | — |
| Simson-Maxwell SGWW625 T6 | 625.0 kW | 3 | — | 18632.0 kg | — |
Among 625–630 kW Natural Gas generators in this comparison, the Generac MG625 is lightest at 6724.0 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.