17 1250–1255 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 |
|---|---|---|---|---|---|
| Kohler KD1250-4 | 1250.0 kW | 3 | 97.0 dBA | 11914.0 kg | 5863.0 L |
| Kohler 1250REOZM | 1250.0 kW | 3 | — | 12020.0 kg | — |
| Generac SD1250 | 1250.0 kW | 3-phase | — | 12405.8 kg | — |
| MTU 18V2000 DS1250 | 1250.0 kW | 3 | 90.2 dBA | 9525.0 kg | — |
| Generac IDLC1250 | 1250.0 kW | 3 | — | 11814.0 kg | — |
| Cummins/Onan DQGAR | 1250.0 kW | 3 | — | 12089.0 kg | — |
| Cummins/Onan DQGAA | 1250.0 kW | 1 or 3 | — | 10989.0 kg | — |
| AKSA AD1250 | 1250.0 kW | 3 | 65.0 dBA | 2200.0 kg | 100.0 L |
| AKSA APD-ULM1250 | 1250.0 kW | 3PH | — | — | — |
| Cummins/Onan DFLC | 1250.0 kW | Three Phase Reconnectable / Non-Reconnectable | — | 10864.0 kg | — |
| Caterpillar DM7802 | 1250.0 kW | 3 | — | 3158.0 kg | — |
| Guangzhou Diesel Engine Factory GC1250LAH | 1250.0 kW | — | — | 35000.0 kg | — |
| Cummins/Onan 1250DFLC | 1250.0 kW | 1 or 3 | — | — | — |
| Cummins/Onan 12500FLC | 1250.0 kW | 1 | — | — | — |
| MTU 18V 2000 G83 | 1250.0 kW | — | — | 3500.0 kg | — |
| Igsa GSMI21250L-UL | 1250.0 kW | 3 | 110.0 dBA | — | — |
| Centrica ERM1250 | 1250.0 kW | 3 | — | 12247.0 kg | — |
Among 1250–1255 kW Diesel generators in this comparison, the AKSA AD1250 is quietest at 65.0 dBA.
Among 1250–1255 kW Diesel generators in this comparison, the AKSA AD1250 is lightest at 2200.0 kg dry weight.
Among 1250–1255 kW Diesel generators in this comparison, the Kohler KD1250-4 has the largest fuel tank at 5863.0 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.