21 250–255 kw diesel 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 |
|---|---|---|---|---|---|
| MTU 6R0150 DS250 | 250.0 kW | 3 | 84.3 dBA | 3080.0 kg | — |
| Cummins/Onan DFAC | 250.0 kW | three phase | — | 2676.0 kg | — |
| Cummins/Onan DQAB | 250.0 kW | 3 | 75.0 dBA | 5815.0 kg | 1040.0 L |
| Volvo Penta TAD1350GE | 250.0 kW | — | — | — | — |
| Kohler 250REOZV | 250.0 kW | 3 | — | — | — |
| Kohler 250REOZD | 250.0 kW | 3 | — | — | — |
| Cummins/Onan DQDAA | 250.0 kW | three phase | — | 2184.0 kg | — |
| MTU MTU 6R1600 DS250 | 250.0 kW | 3 | 86.6 dBA | 3078.0 kg | — |
| Cummins/Onan DYH 250 kW Series | 250.0 kW | Single Phase | — | 2951.0 kg | — |
| AKSA AD250 | 250.0 kW | 3 | 65.0 dBA | 1800.0 kg | 100.0 L |
| Kohler 250REOZJE | 250.0 kW | 3 | 75.0 dBA | 3606.0 kg | 555.0 L |
| Cummins/Onan DFM Series 60Hz | 250.0 kW | 3 | — | 2867.0 kg | — |
| Cummins/Onan DFM 275 | 250.0 kW | 3 | — | 2937.0 kg | — |
| MTU 250-XC6DT3 | 250.0 kW | 1 | 94.0 dBA | 2649.0 kg | — |
| GS Pack GS Pack + 250 | 250.0 kW | — | — | — | — |
| Kohler 250REOZJD | 250.0 kW | 3 | — | — | — |
| Cummins/Onan DYH 250 kW | 250.0 kW | 3 | — | 72.875 kg | 15.0 L |
| Simson-Maxwell SVW250 T6-T3 | 250.0 kW | 1 | — | 3034.5 kg | 1685.9 L |
| MTU 6R1600 DS250 | 250.0 kW | 3 | 86.6 dBA | 3134.0 kg | — |
| Generac SD250 | 250.0 kW | Three-Phase | 128.0 dBA | 5016.0 kg | 87.0 L |
| SDMO JS250U | 250.0 kW | 3 | 72.5 dBA | 2165.0 kg | 209.0 L |
Among 250–255 kW Diesel generators in this comparison, the AKSA AD250 is quietest at 65.0 dBA.
Among 250–255 kW Diesel generators in this comparison, the Cummins/Onan DYH 250 kW is lightest at 72.875 kg dry weight.
Among 250–255 kW Diesel generators in this comparison, the Simson-Maxwell SVW250 T6-T3 has the largest fuel tank at 1685.9 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.