Manufacturer-documented fuel consumption for 21 1500–1505 kW Diesel generator sets — median 94.73 gal/h at full load, 51.78 gal/h at half load.
Compare 1500–1505 kW Diesel generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Caterpillar 3512B HD | 1500 | 52.91 | 103.26 | — | — |
| Caterpillar 3512B-HD TA | 1500 | 52.91 | 103.26 | — | — |
| Caterpillar 3512C | 1500 | 58.06 | 104.61 | — | — |
| Caterpillar SR4B | 1500 | 27.45 | 47.10 | 4730 | 45.5 |
| Cummins/Onan C1500D6E | 1500 | 51.78 | 95.37 | — | — |
| Cummins/Onan DFLE | 1500 | 47.55 | 8.66 | — | — |
| Cummins/Onan DFM | 1500 | — | 77.30 | — | — |
| Cummins/Onan DQGAB | 1500 | 53.63 | 94.68 | — | — |
| FG Wilson P1875E | 1500 | — | 93.52 | — | — |
| Generac MD1500 | 1500 | 64.99 | 126.59 | 65 | 0.3 |
| Generac SD1500 | 1500 | 17.44 | 35.13 | 1525 | 23.1 |
| Kohler 1500ROZD | 1500 | 10.17 | 19.79 | — | — |
| Kohler KD1500 | 1500 | — | 98.01 | 5863 | — |
| MQ Power 1500 kW Containerized Diesel Generator Set | 1500 | 12.57 | 23.06 | 900 | 18.9 |
| MTU 12V4000 DS1500 | 1500 | 1.37 | 2.62 | — | — |
| MTU MTU 12V4000 DS1500 | 1500 | 59.70 | 110.95 | — | — |
| SDMO EXEL 2 X 1500 UC | 1500 | — | 8.51 | — | — |
| SDMO X1500UC | 1500 | — | 234.58 | — | — |
| SDMO XS 1500 UC | 1500 | — | 264.17 | 1000 | — |
| MTU 12V4000G24 | 1504 | 52.89 | 99.75 | — | — |
| MTU 12V4000G74F | 1504 | 50.14 | 94.73 | — | — |
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 21 models with manufacturer data, full-load consumption runs 2.62–264.17 gal/h (median 94.73); at 50% load the median is 51.78 gal/h.
At 50% load, documented tank sizes give 0.3–45.5 hours (median 21.0 h) across 4 models.