Manufacturer-documented fuel consumption for 14 250–255 kW Diesel generator sets — median 16.27 gal/h at full load, 9.09 gal/h at half load.
Compare 250–255 kW Diesel generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Caterpillar D250 GC | 250 | 24.22 | 42.56 | 2271 | 24.8 |
| Cummins/Onan DFAC | 250 | 8.45 | 13.92 | — | — |
| Cummins/Onan DFM Series 60Hz | 250 | — | 4.86 | — | — |
| Cummins/Onan DQDAA | 250 | 10.49 | 17.99 | — | — |
| Cummins/Onan DYH 250 kW | 250 | — | 4.09 | 15 | — |
| Generac SD250 | 250 | 2.75 | 4.89 | 87 | 8.4 |
| Kohler 250REOZD | 250 | 8.82 | 16.93 | — | — |
| Kohler 250REOZJD | 250 | 8.35 | 15.61 | — | — |
| Kohler 250REOZV | 250 | 9.35 | 18.47 | — | — |
| MTU 250-XC6DT3 | 250 | 2.19 | 4.44 | — | — |
| MTU 6R0150 DS250 | 250 | 1.37 | 2.62 | — | — |
| MTU 6R1600 DS250 | 250 | 10.04 | 17.70 | — | — |
| MTU MTU 6R1600 DS250 | 250 | 11.10 | 18.49 | — | — |
| Simson-Maxwell SVW250 T6-T3 | 250 | 10.01 | 17.12 | 1686 | 44.5 |
Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.
Across 14 models with manufacturer data, full-load consumption runs 2.62–42.56 gal/h (median 16.27); at 50% load the median is 9.09 gal/h.
At 50% load, documented tank sizes give 8.4–44.5 hours (median 24.8 h) across 3 models.