Cummins QST30G1 vs Volvo Penta TWD1673GE
The Cummins QST30G1 and Volvo Penta TWD1673GE are both diesel generator engines in a similar power class. Both are rated at roughly 782 kVA. Displacement is 30 L versus 16.1 L. The table below compares their full specifications side by side.
| Specification | Cummins QST30G1 | Volvo Penta TWD1673GE |
|---|---|---|
| Headline rating | 783 kVA | 781 kVA |
| Standby (50 Hz) | 626 kWe | — |
| Prime (50 Hz) | 582 kWe | — |
| Standby (60 Hz) | 751 kWe | 625 kWe |
| Prime (60 Hz) | 700 kWe | 570 kWe |
| Displacement | 30 L | 16.1 L |
| Configuration | V12 | L6 |
| Cylinders | 12 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Final Tier 4 |
| Dry weight | — | — |
| Origin | United States | Sweden |
Choosing between Cummins QST30G1 and Volvo Penta TWD1673GE
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Cummins QST30G1 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.