Caterpillar CG132B-12 vs Waukesha VGF36GSI/GSID (L36GSI/GSID)
The Caterpillar CG132B-12 and Waukesha VGF36GSI/GSID (L36GSI/GSID) are both natural gas generator engines in a similar power class. Both are rated at roughly 763 kVA. Displacement is 26.3 L versus 36 L. The table below compares their full specifications side by side.
| Specification | Caterpillar CG132B-12 | Waukesha VGF36GSI/GSID (L36GSI/GSID) |
|---|---|---|
| Headline rating | 750 kVA | 775 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 600 kWe | — |
| Standby (60 Hz) | — | 620 kWe |
| Prime (60 Hz) | 600 kWe | 560 kWe |
| Displacement | 26.3 L | 36 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | Germany | United States |
Choosing between Caterpillar CG132B-12 and Waukesha VGF36GSI/GSID (L36GSI/GSID)
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 Waukesha VGF36GSI/GSID (L36GSI/GSID) has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.