15 25–30 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 |
|---|---|---|---|---|---|
| Kohler 25REZG | 25.0 kW | — | 74.0 dBA | — | — |
| Generac QT 1.6L 25kW | 25.0 kW | — | — | — | — |
| Cummins/Onan C25 N6 | 25.0 kW | 1 or 3 | — | 441.0 kg | — |
| Kohler 25CCL | 25.0 kW | — | 57.0 dBA | 635.0 kg | — |
| Cummins/Onan RS 25 | 25.0 kW | 1 or 3 | 64.0 dBA | 503.0 kg | — |
| Gillette SP-250 | 25.0 kW | 1 | — | — | — |
| Generac Guardian Series Liquid-Cooled 25 kW unit | 25.0 kW | — | — | — | — |
| Generac QT025 | 25.0 kW | 1Ø or 3Ø | 72.0 dBA | — | — |
| Cummins/Onan 25 GEAF | 25.0 kW | 60 Hertz | — | — | — |
| Briggs & Stratton PP26 | 26.0 kW | 1 | 67.0 dBA | 247.0 kg | — |
| Briggs & Stratton PowerProtect 26kW | 26.0 kW | — | — | — | — |
| Briggs & Stratton PowerProtect+ 26kW | 26.0 kW | — | — | — | — |
| Generac QT027 | 27.0 kW | — | 70.0 dBA | 404.15 kg | — |
| SDMO G 40 | 27.0 kW | 3 | — | 565.0 kg | — |
| SDMO G30 | 27.0 kW | 3 | — | — | — |
Among 25–30 kW Bi-Fuel (NG/LP) generators in this comparison, the Kohler 25CCL is quietest at 57.0 dBA.
Among 25–30 kW Bi-Fuel (NG/LP) generators in this comparison, the Briggs & Stratton PP26 is lightest at 247.0 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.