12 10–15 kw gasoline 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 10ERG | 10.0 kW | — | — | — | — |
| Kohler 10EKD | 10.0 kW | — | — | — | — |
| Cummins/Onan 10C | 10.0 kW | single/three | — | — | 18.93 L |
| Generac Guardian 10 kW | 10.0 kW | — | — | — | — |
| Cummins/Onan 10.0JC-3CR | 10.0 kW | 1 | — | — | — |
| Cummins/Onan 10HQ-1R | 10.0 kW | 1 | — | — | — |
| Kohler PRO 12.3 EFI | 10.5 kW | — | — | 139.0 kg | 32.9 L |
| Generac Guardian 12 kW | 12.0 kW | — | — | — | — |
| Cummins/Onan 12.5JC-3CR | 12.5 kW | 1 | — | — | — |
| Cummins/Onan 12.5RJC | 12.5 kW | 1 | — | — | — |
| Kohler 13ERG | 13.0 kW | — | — | — | — |
| Kohler 15ERG | 14.0 kW | — | — | — | — |
Among 10–15 kW Gasoline generators in this comparison, the Kohler PRO 12.3 EFI has the largest fuel tank at 32.9 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.